Ingenieurwissenschaften und zugeordnete Tätigkeiten
Filtern
Dokumenttyp
- Vortrag (611)
- Zeitschriftenartikel (386)
- Beitrag zu einem Tagungsband (190)
- Posterpräsentation (52)
- Forschungsbericht (9)
- Dissertation (7)
- Buchkapitel (5)
- Sonstiges (4)
- Forschungsdatensatz (4)
- Monografie (2)
Sprache
- Englisch (893)
- Deutsch (372)
- Russisch (5)
- Mehrsprachig (2)
- Spanisch (2)
Schlagworte
- Additive manufacturing (97)
- Additive Fertigung (92)
- Laser beam welding (92)
- Additive Manufacturing (83)
- Welding (69)
- Hydrogen (62)
- Eigenspannungen (55)
- Wear (48)
- Friction (42)
- Residual stress (42)
- Wasserstoff (42)
- Microstructure (40)
- Hochfester Stahl (39)
- Schweißen (39)
- MAG-Schweißen (36)
- Ultraschallunterstütztes Fräsen (36)
- Thermography (34)
- Mechanical properties (32)
- Residual stresses (31)
- Laser powder bed fusion (30)
- Laser metal deposition (24)
- TIG welding (24)
- LIBS (23)
- Solidification cracking (23)
- Ultrasonic-assisted milling (23)
- Niobium carbide (21)
- Tribology (21)
- In situ measurement (20)
- Numerical simulation (20)
- Creep-resistant steel (19)
- Residual Stress (19)
- Laser Powder Bed Fusion (18)
- Legierungsmodifikation (18)
- Surface integrity (18)
- Wärmeführung (18)
- Diffusion (17)
- High-strength steels (17)
- Laser implantation (17)
- Oberflächenintegrität (17)
- AGIL (16)
- Digitalisierung (16)
- Duplex stainless steel (16)
- L-PBF (16)
- Neutron diffraction (16)
- Cyclic R-curve (15)
- Kaltrisssicherheit (15)
- Laserstrahlschweißen (15)
- Numerical modeling (15)
- Alloy 36 (14)
- Fatigue (14)
- Process monitoring (14)
- Weld pool shape (14)
- 316L (13)
- AlSi10Mg (13)
- Fracture mechanics (13)
- High-strength steel (13)
- Open science (13)
- Steel (13)
- AM (12)
- Diffraction (12)
- Digitalisation (12)
- Hochfester Feinkornbaustahl (12)
- Hybrid laser-arc welding (12)
- Hydrogen assisted cracking (12)
- NbC (12)
- Porosity (12)
- Thermografie (12)
- TiB2 (12)
- Alloy modification (11)
- DED (11)
- Heat treatment (11)
- High Entropy Alloy (11)
- High-entropy alloy (11)
- Hochfeste Feinkornbaustähle (11)
- Laser welding (11)
- Polymers (11)
- Reparatur (11)
- Stress relief cracking (11)
- Ti-6Al-4V (11)
- Werkzeugverschleiß (11)
- Inconel 718 (10)
- Laser hybrid welding (10)
- Post weld heat treatment (10)
- Research data management (10)
- Surface texturing (10)
- Thick-walled steel (10)
- Windenergie (10)
- X-ray diffraction (10)
- AISI 316L (9)
- Deep penetration laser beam welding (9)
- Fatigue crack propagation threshold (9)
- Hardness (9)
- Hybrid laser arc welding (9)
- Infrared thermography (9)
- Laser Metal Deposition (9)
- Machining (9)
- Restraint (9)
- Stainless Steel (9)
- Submerged arc welding (9)
- AISI D2 (8)
- Element transport (8)
- Fatigue strength (8)
- Fügetechnik (8)
- Hot cracking (8)
- Implant-Test (8)
- Kaltriss (8)
- Laser-induced periodic surface structures (LIPSS) (8)
- Numerical modelling (8)
- Oxidation (8)
- Solidification (8)
- Temperature (8)
- ToF-SIMS (8)
- WAAM (8)
- Weld pool dynamics (8)
- i-TRIBOMAT (8)
- Auftragschweißen (7)
- Bruchmechanik (7)
- Characterisation (7)
- Charpy impact toughness (7)
- Chemical composition (7)
- Cryogenic temperature (7)
- Digital image correlation (7)
- Digitalization (7)
- Electromagnetic backing (7)
- Fatigue crack growth (7)
- Forschung (7)
- Friction stir welding (7)
- Harmonisation (7)
- Heat control (7)
- High power laser beam welding (7)
- Kaltrisse (7)
- LMD (7)
- Laserhybridschweißen (7)
- Magnetic field (7)
- Magnetohydrodynamics (7)
- Medium Entropy Alloys (7)
- Nickel (7)
- Open data (7)
- Pipeline (7)
- Residual Stresses (7)
- Resistance spot welding (7)
- Schwingfestigkeit (7)
- Selective laser melting (SLM) (7)
- Thermal cycles (7)
- Tool wear (7)
- Tribologie (7)
- WRC 1992 diagram (7)
- Wärmenachbehandlung (7)
- Austenitic stainless steels (6)
- Bauteilprüfung (6)
- Bulging effect (6)
- Carrier gas hot extraction (6)
- Cermet (6)
- Component assessment (6)
- Computed Tomography (6)
- Computed tomography (6)
- Critical strain (6)
- Deep penetration (6)
- Duplex (6)
- Electromagnetic forces (6)
- FEM (6)
- Fatigue crack propagation (6)
- Fracture Mechanics (6)
- Heat accumulation (6)
- Hot stamping (6)
- Joining dissimilar materials (6)
- LTT (6)
- Large-scale test (6)
- Laser Powder Bed Fusion (L-PBF) (6)
- Laser-Pulver-Auftragschweißen (6)
- Laserimplantation (6)
- Lubricants (6)
- PBF-LB/M (6)
- Partial penetration (6)
- Process parameters (6)
- Prüfverfahren (6)
- Reibung (6)
- Rührreibschweißen (6)
- Selective Laser Melting (6)
- Selective Laser Melting (SLM) (6)
- Simulation (6)
- Steel and aluminium (6)
- Turbine disk (6)
- UP-Schweißen (6)
- Zerspanung (6)
- 3D printing (5)
- AFM (5)
- Additive Manufacturing (AM) (5)
- Additive manufacturing (AM) (5)
- Arc welding (5)
- Artificial neural network (5)
- Austenitic stainless steel (5)
- Crack (5)
- Crack closure (5)
- Cutting tool (5)
- Direct Energy Deposition (5)
- Directed Energy Deposition (5)
- Eisenaluminid (5)
- End crater (5)
- Erstarrungsriss (5)
- GMA welding (5)
- Gefügedegradation (5)
- Grain refinement (5)
- Gründungsstrukturen (5)
- Heißriss (5)
- Heißrisse (5)
- High entropy alloy (5)
- Hochentropie Legierung (5)
- Hochfest (5)
- Hot steam (5)
- Hybrid Laser Arc Welding (5)
- Hydrogen-assisted cracking (5)
- ISO 3690 (5)
- Interlaboratory tests (5)
- Keyhole mode welding (5)
- Kitagawa-Takahashi diagram (5)
- Künstliche Intelligenz (5)
- LIBS TIG welding (5)
- Laser energy distribution (5)
- Liquid metal embrittlement (5)
- Low Cycle Fatigue (5)
- Mechanical Engineering (5)
- Mechanics of Materials (5)
- Neutron Diffraction (5)
- Neutron imaging (5)
- Numerical Simulation (5)
- Numerical process simulation (5)
- Polymer composites (5)
- Qualitätssicherung (5)
- Reparaturschweißen (5)
- Review (5)
- Round robin tests (5)
- Schadensanalyse (5)
- Sintering (5)
- Spannungsrelaxationsriss (5)
- Studie (5)
- Tensile properties (5)
- Thermal desorption analysis (5)
- Thick-plate welding (5)
- WelDX (5)
- Welding simulation (5)
- Weldments (5)
- Widerstandspunktschweißen (5)
- X-ray and Neutron Diffraction (5)
- X38CrMoV5-3 (5)
- 3D Druck (4)
- AISI 304L (4)
- Atomic Forc Microscopy (4)
- Atomic force microscopy (4)
- Bulge effect (4)
- Cold cracking safety (4)
- Constraint (4)
- Contact resonance (4)
- Cracking (4)
- Cutting tools (4)
- Defects (4)
- Deuterium (4)
- Direct energy deposition (4)
- Directed energy deposition (4)
- EBSD (4)
- Elastic modulus (4)
- Electrochemical permeation (4)
- Elektromagnetische Schmelzbadbeeinflussung (4)
- Endkrater (4)
- Evaporation (4)
- Fail-safe (4)
- Forschungsdatenmanagement (4)
- Gap bridgeability (4)
- Heat conduction (4)
- High Entropy Alloys (4)
- High strength steel (4)
- High-strength structural steels (4)
- Highspeed-plasma-laser-cladding (4)
- Hochentropielegierung (4)
- Hydrogen embrittlement (4)
- IN718 (4)
- In-situ Monitoring (4)
- Inter layer time (4)
- Intrinsischer Schwellenwert gegen Ermüdungsrissausbreitung (4)
- Kaltrissprüfung (4)
- Keyhole dynamics (4)
- Laser beam melting (LBM) (4)
- Laser powder bed fusion (L-PBF) (4)
- Liquid Metal Embrittlement (4)
- MVT (4)
- Martensite (4)
- Mathematical modeling (4)
- Microstructure characterization (4)
- Mikrostruktur (4)
- Multi-principal element alloys (4)
- Niobium carbide (NbC) (4)
- Offshore (4)
- Offshore Windenergieanlagen (4)
- Oscillating magnetic field (4)
- PEEK (4)
- Pipelines (4)
- Plasma-Transferred-Arc (4)
- Plasma-transferred arc welding (4)
- Position detection (4)
- Potentiodynamic Polarization (4)
- ProMoAM (4)
- Process simulation (4)
- Properties (4)
- Qualitätsinfrastruktur (4)
- Ray tracing (4)
- Repair-welding (4)
- Research (4)
- Restlebensdauer (4)
- Rundnaht (4)
- SIMS (4)
- SLM (4)
- Scanning Kelvin Probe Force Microscopy (4)
- Schadenstolerante Bauteilauslegung (4)
- Shear modulus (4)
- Surface modification (4)
- Synchrotron (4)
- Titanium (4)
- Toughness (4)
- Tribofilm (4)
- Varestraint-Test (4)
- WIG-Schweißen (4)
- Weld metal (4)
- Wind energy (4)
- Young's modulus (4)
- Zerspankräfte (4)
- Zyklische R-Kurve (4)
- 100Cr6 (3)
- 9%Ni steel (3)
- Ageing (3)
- Aging (3)
- Alumina (3)
- Aqueous Corrosion (3)
- Artungleiche Werkstoffe (3)
- Automatisierte Fertigung (3)
- Boundary element method (3)
- Bulge formation (3)
- Bulging (3)
- Burst (3)
- CT (3)
- Chunky graphite (3)
- Circumferential weld (3)
- Cobalt (3)
- Cold Spray (3)
- Cold cracking (3)
- Component test (3)
- Corrosion (3)
- Crack propagation (3)
- Cryogenic steel (3)
- Crystal branch development (3)
- Cyclic R-Curve (3)
- DED-Arc (3)
- DVS (3)
- Data fusion (3)
- Data-fusion (3)
- Database (3)
- Defokussierung (3)
- Deposition welding (3)
- Dickblech (3)
- Diffusible hydrogen (3)
- Dilatometry (3)
- Dimensional accuracy (3)
- Dissimilar metal weld (3)
- Dissimilar metal weld (DMW) joint (3)
- Dissimilar metal weld overlays (3)
- Distortion (3)
- Duplex Stainless Steel (3)
- Duplex stainless steels (3)
- Edge quality (3)
- Eigenspannung (3)
- Elastomers (3)
- Electrochemical Impedance Spectroscopy (3)
- Electromagnetic Weld Pool Support (3)
- Electromagnetic weld pool support (3)
- Electron backscattered diffraction (3)
- Electron beam welding (3)
- Elektromagnetische Schmelzbadunterstützung (3)
- Endurance limit (3)
- Equivalent heat source (3)
- Experimental procedure (3)
- Fatigue life (3)
- Fatigue limit (3)
- Fe3Al (3)
- Feinkornbaustahl (3)
- Femtosecond laser (3)
- Fortschrittsbericht (3)
- Fracture (3)
- Fracture toughness (3)
- Full Penetration (3)
- Fügetechnologie (3)
- Grain size (3)
- Gutachten (3)
- Hardmetal (3)
- Heat Treatment (3)
- High-strength Steels (3)
- Hot crack (3)
- Hot-Stamping (3)
- Hybrid components (3)
- Hybrid repair (3)
- Hydrogen diffusion (3)
- ICP-MS (3)
- Implant test (3)
- In situ (3)
- In situ monitoring (3)
- In-situ monitoring (3)
- In-situ process monitoring (3)
- Keyhole collapse (3)
- Korrosionsschutz (3)
- Kupferazid (3)
- LCF (3)
- LME (3)
- LPA (3)
- LPBF (3)
- Laser (3)
- Laser Beam Welding (3)
- Laser Pulver Auftragsschweißen (3)
- Laser Welding (3)
- Laser beam melting (3)
- Laser dispersing (3)
- Leichtbau (3)
- Life Cycle Assessment (3)
- Lubricated sliding (3)
- Lubrication (3)
- MSG-Schweißen (3)
- Measurement (3)
- Mechanical mismatching (3)
- Mechanische Eigenschaften (3)
- Medium entropy alloy (3)
- Mediumentropie Legierung (3)
- Mediumentropielegierung (3)
- Melt pool dinamics (3)
- Metals and Alloys (3)
- Methane (3)
- Molten pool dynamics (3)
- Multi-physical modeling (3)
- Multi-physical modelling (3)
- Multielementlegierungen (3)
- Multispectral thermography (3)
- NDT (3)
- Neutron radiography (3)
- Ni alloy (3)
- Numerische Simulation (3)
- Online Process Monitoring (3)
- Optical Tomography (3)
- Optical flow (3)
- Optical tomography (3)
- Oscillating vapor plume (3)
- Overspeed (3)
- Periodic solidification pattern (3)
- Phase transformation (3)
- Plasma-Pulver-Auftragschweißen (3)
- Polymer materials (3)
- Presshärten (3)
- Prozesskette (3)
- Prozessmonitoring (3)
- Prozessüberwachung (3)
- Pufferschichten (3)
- Quality Assurance (3)
- Quality assurance (3)
- Repair (3)
- Reproducibility (3)
- Residual stress analysis (3)
- Rissarrest (3)
- Schallemission (3)
- Selective laser melting (3)
- Spannungsrelaxationsrisse (3)
- Stahl und Aluminium (3)
- Structural integrity (3)
- TEKKEN (3)
- TEKKEN-Test (3)
- TES (3)
- Temperature emissivity separation (3)
- Texture (3)
- Thermisches Ausfugen (3)
- Thermo-fluid flow (3)
- Thick Materials (3)
- Transient heat transfer (3)
- Tungsten carbide (3)
- Turning (3)
- Umlaufkühler (3)
- Umweltwirkungen (3)
- Vacuum (3)
- Verschleiß (3)
- Wasserstofftechnologien (3)
- Wire arc additive manufacturing (3)
- Ökobilanzierung (3)
- Überlappbereich (3)
- (U)HMWPE (2)
- 13CrMoV9-10 (2)
- ASTM E647 (2)
- Abrasion (2)
- Achsschenkel (2)
- Adaptives Schweißen (2)
- Advanced high strength steel (2)
- Advanced high strength steels (2)
- Aerosol measurements (2)
- Al/Mg alloys (2)
- Aluminum alloys (2)
- Analytisches Modell (2)
- Applications (2)
- Archard's law (2)
- Austenite-to-martensite transformation (2)
- Automatisierte schweißtechnische Fertigung (2)
- Bauteilauslegung (2)
- Bauteilbewertung (2)
- Bead-on-plate welds (2)
- Bragg-edge imaging (2)
- Bruchmechanische Auslegung (2)
- Build direction (2)
- Build-up Orientation (2)
- CASTOR-Behälter (2)
- CFD-model (2)
- CNG (2)
- Calibration free (2)
- Capability (2)
- Carbon steel (2)
- Carbonitride (2)
- Characterization (2)
- Co-Cr-alloy (2)
- Coarse-grained heat-affected zone (2)
- Coefficient of Friction (2)
- Columnar crystal growth (2)
- Composites (2)
- Computed tomography (CT) (2)
- Condition monitoring (2)
- Copper powder particles (2)
- Crack closure effect (2)
- Crack-closure (2)
- Creep (2)
- Creep behavior (2)
- Creep resistant steel (2)
- Creep-resisting materials (2)
- Crystallographic texture (2)
- Cyclic J-integral (2)
- Cyclic R-curve analysis (2)
- DED-EB (2)
- DED-arc (2)
- DLC (2)
- Damage tolerance (2)
- Data evaluation methods (2)
- Data preparation (2)
- Datenbank (2)
- Debye-Waller-Faktor (2)
- Debye–Waller factor (2)
- Defekte (2)
- Degradation (2)
- Digital (2)
- Digital transformation (2)
- Direct Laser Metal Deposition (2)
- Directed Enery Deposition (2)
- Dual phase steel (2)
- Ductile cast iron (2)
- Duplex AISI 2205 (2)
- Duplex steels (2)
- Durability (2)
- Dynamische Beanspruchung (2)
- EBAM (2)
- Effective crack propagation data (2)
- Einspanngrad (2)
- Electrical conductivity (2)
- Electromagnetic support (2)
- Electron backscatter diffraction (2)
- Elektromagnetische Schmelzbadsicherung (2)
- Elektronenstrahlschweißen (2)
- Embedded electronics (2)
- Embrittlement (2)
- End-crater (2)
- Environmental conditions (2)
- Ermüdung (2)
- Ermüdungsrisswachstum (2)
- Europäisches Tribologie-Zentrum (2)
- Expansion joint (2)
- Experiment (2)
- Experimental design (2)
- Experimental determination (2)
- Explosion (2)
- FE-model (2)
- FGM (2)
- Fahrrad (2)
- Failure Assessment Diagram (2)
- Fatigue Crack Propagation (2)
- Fatigue Strength (2)
- Fatigue properties (2)
- Ferritic spheroidal graphite cast iron (2)
- Ferromagnetischer Stahl (2)
- Filler material distribution (2)
- Filler wire mixing (2)
- Finite element analysis (2)
- Finite element method (2)
- Finite element simulation (2)
- Flüssigmetallinduzierte Rissbildung (2)
- Force distance curve (2)
- Force-distance curves (2)
- Fractography (2)
- Fracture resistance (2)
- Fraktographie (2)
- Frequenzanalyse (2)
- Fräsen (2)
- Fuel economy (2)
- Full penetration (2)
- Fume (2)
- GMA Welding (2)
- GMAW (2)
- Gas metal arc welding (2)
- Gas tungsten arc welding (GTAW) (2)
- General Materials Science (2)
- Generative Fertigung (2)
- Gusseisen mit Kugelgraphit (2)
- HEA (2)
- HSLA (2)
- HSLA steel (2)
- Hartstoffphasen (2)
- Heat treatments (2)
- Heat-affected zone (2)
- Heissrisse (2)
- High Cycle Fatigue (2)
- High Temperature Testing (2)
- High strength steels (2)
- High-power laser (2)
- High-power laser beam (2)
- High-power laser beam welding (2)
- High-pressure (2)
- High-resolution camera (2)
- Hochleistungsschweißen (2)
- Hochtemperaturwerkstoffe (2)
- Hohlzugprobe (2)
- Holz-Stahl-Kontakte (2)
- Hot Cracks (2)
- Hybrid Part (2)
- Hybrid welding (2)
- Hydrogen Assisted Cracking (HAC) (2)
- Härteprüfung nach Vickers (2)
- Höherfeste Feinkornbaustähle (2)
- Höherfester Feinkornbaustahl (2)
- Höherfester Stahl (2)
- ISO 12108 (2)
- Image processing (2)
- In situ strain (2)
- In-situ (2)
- Ionic liquid (2)
- Iron aluminide (2)
- Irradiation (2)
- Joint sealing (2)
- Kerbschlagarbeit (2)
- Keyhole mode laser beam welding (2)
- Keyhole porosity (2)
- Korrelation (2)
- L-PBF 316L (2)
- LDX (2)
- LIMS (2)
- LIPSS (2)
- LNG (2)
- LTT Weld Filler Materials (2)
- LTT weld filler materials (2)
- Laboratory specimens (2)
- Lack-of-fusion (2)
- Large electrical high-voltage machine (2)
- Laser Metal Deposition (LMD) (2)
- Laser beam welding (LBW) (2)
- Laser energy absorption (2)
- Laser metal deposition (LMD) (2)
- Laser-Hybridschweißen (2)
- Laser-metal-deposition (2)
- Laserpulverauftragschweißen (2)
- Laserstrahlschmelzen (2)
- Leakage Rate (2)
- Lebensdauer (2)
- Lichtbogensensorik (2)
- Liquation Cracking (2)
- Localized laser dispersing (2)
- Longitudinal Wave (2)
- Low heat input GMA welding (2)
- Low transformation temperature (LTT) steel (2)
- Lubricant additives (2)
- MAG welding (2)
- MHD (2)
- MSG-Engspaltschweißen (2)
- Master Curve-Konzept (2)
- Matching ferritic welding electrode (2)
- Material defects (2)
- Material transport (2)
- Materialuntersuchung (2)
- Mechanical behavior (2)
- Melt pool dynamics (2)
- Metal (2)
- Metal mixing (2)
- Metallschutzgasschweißen (2)
- Metallsulfide (2)
- Metallurgie (2)
- Micro-shrinkages (2)
- Microbiologically influenced corrosion (2)
- Microstructure and texture (2)
- Misalignment of the edges (2)
- Model calibration (2)
- Modification of structural morphology (2)
- Molten pool (2)
- Molten pool behaviour (2)
- Moving mesh (2)
- Multiple cracks (2)
- Multiple principal element alloy (2)
- Multiple reflections (2)
- Nachwärmung (2)
- Neuronales Netz (2)
- Neutron (2)
- NiCrBSi (2)
- Nickel alloys (2)
- Non-metallic inclusions (2)
- Offshore wind (2)
- Optical measurement (2)
- Optische Tomografie (2)
- PAG (2)
- PBF-LB/M/316L (2)
- PBF/LB-M (2)
- PWHT (2)
- Particle gas emission (2)
- Path planning (2)
- Penetration depth (2)
- Performance testing (2)
- Photoresist (2)
- Pipe manufacturing (2)
- Pipeline steel X120 (2)
- Pitting (2)
- Plasma (2)
- Plasma-cutting (2)
- Plastic deformation (2)
- Plume (2)
- Pores (2)
- Post-weld heat treatment (2)
- Powder Bed Fusion (2)
- Pre-weld Preparation (2)
- Preheating (2)
- Process chain (2)
- Process parameter optimization (2)
- Pulsed laser beam welding (2)
- Quantification (2)
- RSW (2)
- Radioactive Waste (2)
- Raman spectroscopy (2)
- Ray tracing method (2)
- Ray-tracing (2)
- Recognition (2)
- Refill friction stir spot welding (2)
- Reheat cracking (2)
- Repair Welding (2)
- Repair welding (2)
- Representative specimens (2)
- Ressidual stress (2)
- Rissbildung in Stahl (2)
- Rissschließeffekte (2)
- Round robin (2)
- S-N curve (2)
- SEM (2)
- SHPB (2)
- SMAW (2)
- SWIR camera (2)
- Scanning kelvin probe force microscopy (2)
- Scattering (2)
- Schadensprävention (2)
- Schleifen (2)
- Schutzgasschweißen (2)
- Schweißeigenspannungen (2)
- Schweißeignung (2)
- Schweißnahtbewertung (2)
- Schweißverbindungen (2)
- Schweißzusatzmodifikation (2)
- Schwellenwert gegen Ermüdungsrissausbreitung (2)
- Schwer spanbar (2)
- Seal Behavior (2)
- Seam geometry (2)
- Selected Laser Melting (2)
- Selektive-laser-melting (2)
- Semi-finishing (2)
- Ship building (2)
- Short crack (2)
- Short cracks (2)
- Single pass welding (2)
- Sliding (2)
- Sliding wear (2)
- Small-scale specimens (2)
- Software (2)
- Solid lubricants (2)
- Solidification craking (2)
- Solubility (2)
- Spatter (2)
- Speed of sound (2)
- Stahl (2)
- Stainless steels (2)
- Steel 316L (2)
- Stoßdämpfer (2)
- Strain measurement (2)
- Strain rate (2)
- Stress corrosion cracking (2)
- Structural Integrity (2)
- Structure (2)
- Struktur Integrität (2)
- Superellipse (2)
- Superelliptic Lamé curves (2)
- Supermartensitic Stainless Steel (SMSS) (2)
- Surface roughness (2)
- Surface structuring (2)
- TPU (2)
- Temperature distribution (2)
- Temperature field (2)
- Tensile Properties (2)
- Tensile performance (2)
- Tensile testing (2)
- Testing method (2)
- Thermal history (2)
- Thermo-capillary convection (2)
- Thermographie (2)
- Ti64 (2)
- TiAl5V4 (2)
- TiAl64V (2)
- Titan (2)
- Titanium alloy (2)
- Tool steel (2)
- Trapping (2)
- Tribologische Daten (2)
- Turbinenscheibe (2)
- Turbulence (2)
- Ultraschallunterstütztes Zerspanen (2)
- Ultrasonic Transducer (2)
- Ultrasonic assisted machining (2)
- Ultrasonic assisted milling (2)
- Ultrasonic machining (2)
- Ultrasonic vibration (2)
- Vaporization (2)
- Varestraint (2)
- Varestraint test (2)
- Varestraint testing (2)
- Verfahrensvergleich (2)
- Verschleißbeständigkeit (2)
- Vickers hardness (2)
- Viscoplasticity (2)
- WAXD (2)
- Wasserstoffdegradation (2)
- Wear resistance (2)
- Wear volume (2)
- Weld defects (2)
- Weld geometry (2)
- Weld pool (2)
- Weld pool behavior (2)
- Weld pool geometry (2)
- Weld pool shape approximation (2)
- Welded Joints (2)
- Welded joints (2)
- Welding microstructure (2)
- Welding residual stresses (2)
- Welding thermal cycle (2)
- Wire Arc Additive Manufacturing (2)
- Wire electron beam additive manufacturing (2)
- Wärmebehandlung (2)
- X-ray Diffraction (2)
- Zerspanbarkeitsanalysen (2)
- Zinc coated steel (2)
- Zink (2)
- Zirconia (2)
- Zugeigenschaften (2)
- Zwischenlagenzeit (2)
- Öffentliche Sicherheit (2)
- μCT-analysis (2)
- 100Cr6 (AISI 52100) steel (1)
- 100Cr6 steel (1)
- 100Cr6-Stahl (1)
- 2101 duplex stainless steel (1)
- 3D Scanning (1)
- 3D-finite element modeling (1)
- 9%Ni steel, (1)
- AC magnetic field (1)
- ADXRD (1)
- AFM-Kraft-Abstand-Kurven (1)
- AHSS (1)
- AISI 321 stainless steel (1)
- AM 316L stainless steel (1)
- AM feature integration (1)
- ASTM (1)
- AXRD (1)
- Abrasive wear (1)
- Absorbed energy (1)
- Abtragende Glasbearbeitung (1)
- Accelerator magnets (1)
- Accoustic emission (1)
- Acero 316L (1)
- Acero alta resistencia (1)
- Acoustic Emission (1)
- Acoustic emission (1)
- Adaptive MSG-Lichtbogenprozesse (1)
- Adaptive MSG-Lichtbogenschweißprozesse (1)
- Adaptive control (1)
- Adaptive remeshing (1)
- Adaptive welding beam oscillation (1)
- Adative arc welding processes (1)
- Additiv (1)
- Additive (1)
- Additive surface treatment (1)
- Additiver Fertigung (1)
- Additives (1)
- Adhesion (1)
- Adhesion by mechanical interlocking (1)
- Adiabatic shear bands (1)
- Adsorption (1)
- Advanced High-Strength Steel (AHSS) (1)
- Advanced high-strength steel (1)
- Advanced high-strength steels (1)
- Al-Mg-Si-Legierungen (1)
- Al/Ti dissimilar joints (1)
- AlMg0.7SiTiB filler wire (1)
- AlMgSi Legierungen (1)
- AlSi10Mg alloy (1)
- Alite (1)
- Alkyd resin-based coating (1)
- Alloy (1)
- Alloy 247 (1)
- Alloy 718 (1)
- Alloys (1)
- Alternative Kraftstoffe (1)
- Alternative fuels (1)
- Alternative test procedure (1)
- Aluminium Alloy (1)
- Aluminium oxide (1)
- Aluminium-Druckguss (1)
- Aluminium-Druckgusslegierung (1)
- Aluminum (1)
- Aluminum bronze (1)
- Analysis (1)
- Analytical calculation (1)
- Analytical model (1)
- Analytical solution (1)
- Angle dependency (1)
- Anlagen (1)
- Anlagenbau (1)
- Arc sensor (1)
- Artefact (1)
- Artificial Intelligence (1)
- As-built LPBF IN718 alloy (1)
- As-shielded arc welding (1)
- Atomic force microscope (1)
- Aufgelöste Tragstrukturen (1)
- Aufheizrate (1)
- Auftriebskräfte (1)
- Austenit (1)
- Austenitic (1)
- Austenitic Stainless Steel (1)
- Austenitic steel (1)
- Austenitic welding electrode (1)
- Austenitischer Rostfreier Stahl (1)
- Automated manufacturing (1)
- Automated welding (1)
- Automation (1)
- Automatisierte schweißtechniche Fertigung (1)
- Automobilindustrie (1)
- Automotive application (1)
- BMDK (1)
- Backlight (1)
- Bacteria (1)
- Bainitischer Schmiedestahl (1)
- Bauteilversuch (1)
- Bayesian technique (1)
- Beam oscillation (1)
- Beam oscillations (1)
- Beanspruchungsanalyse (1)
- Bedarf (1)
- Bedeutung (1)
- Behavior (1)
- Bending test (1)
- Betriebsfestigkeit (1)
- Beugung (1)
- Bewegtes Gitter (1)
- Biaxial test (1)
- Binder (1)
- Binders (1)
- Bionik (1)
- Biopolymers (1)
- Biotische/abiotische Faktoren (1)
- Bismuth titanates (1)
- Boundary lubrication (1)
- Bragg-edge (1)
- Bragg-edge neutron 2D imaging (BENI) (1)
- Brazil nut Mesocarp (1)
- Bremsbelag (1)
- Bremsbeläge (1)
- Bridging voids (1)
- Bruch (1)
- Bruchmechanische Kennwerte (1)
- Bruchmechanische Konzepte (1)
- Build-up strategy (1)
- Bulge (1)
- Bulging effects (1)
- CCT diagrams (1)
- CFD model (1)
- Calculation time (1)
- Camera (1)
- Cantilever microprobe (1)
- Carbide (1)
- Carbon (1)
- Carbon dioxide footprint (1)
- Carrier gas hot extraction (CGHE) (1)
- Catalysis (1)
- CdSe/ZnS quantum Dots (1)
- Cellular substructure (1)
- Cellular uptake (1)
- Cemented carbide (1)
- Centerline solidification cracking (1)
- Ceramic (1)
- Ceramic matrix composites (1)
- Cermets (1)
- Chapetti’s and IBESS model (1)
- Characterization of corrosion layers (1)
- Charpy Impact Test (1)
- Charpy Transition Curve (1)
- Charpy pendulum impact test (1)
- Chemical corrosion (1)
- Chemische Zusammensetzungen (1)
- Chunky graphite degeneration (1)
- Chunky-Graphit (1)
- Cimensional Accuracy (1)
- Circumferential welds (1)
- Clad steels (1)
- Clinker substitute (1)
- Clustering (1)
- Co (1)
- Co-Cr-Legierung (1)
- Coarse grained heat affected zone (1)
- Coating (1)
- Cobalt-chromium alloy (1)
- Codes and standards (1)
- Coefficient of friction (1)
- Cold cracking and welding (1)
- Cold-welding (1)
- Complex loading (1)
- Component (1)
- Component Assessment (1)
- Component-like test (1)
- Composite (1)
- Compositionally complex alloy (1)
- Computational fluid dynamics (1)
- Computer Aided Manufacturing (1)
- Computer vision (1)
- Computertomografie (1)
- Condensed Matter Physics (1)
- Constraint faktor (1)
- Contact fatigue (1)
- Contact pressure (1)
- Contamination (1)
- Control (1)
- Conventional Ni-based austenitic welding electrode (1)
- Conversion of results (1)
- Convolutional Neural Networks (1)
- Convolutional neural network (1)
- Convolutional neural networks (CNN) (1)
- Coolant-free (1)
- Cooling rate (1)
- Coordinate measurement machine (1)
- Core-shell structures (1)
- Correlation microstructure to properties (1)
- Corrosion pits (1)
- Corrosion testing (1)
- Co–Cr-alloy (1)
- CrMoV-Stahl (1)
- Crack Tip Opening Displacement (CTOD) (1)
- Crack arrest (1)
- Crack closure mechanisms (1)
- Crack propagation resistance (1)
- Crack-tip constraint (1)
- Cracking mechanism (1)
- Crater (1)
- Crater wear (1)
- Creep resisting materials (1)
- Critical strain rate (1)
- Crown-abutment connection (1)
- Cryogenic Engineering (1)
- Cryogenic Steel (1)
- Crystal Plasticity Modelling (1)
- Crystal plasticity (1)
- Crystallographic texture control (1)
- CuSn1 (1)
- Current density (1)
- Curvas FCGR (1)
- Curve fitting (1)
- Cutting forces (1)
- Cyclic loading (1)
- Cyclic stress-strain curve (1)
- Cylindrical turning (1)
- D7755-11 (1)
- DED-L (1)
- DED-LB (1)
- DEM (1)
- DIC (1)
- DSS (1)
- Damage Tolerance (1)
- Damage prediction (1)
- Damage tolerance assessment (1)
- Damage tolerant component design (1)
- Data Integrity (1)
- Data Sciences (1)
- Dataspace (1)
- Datenmanagement (1)
- Dduplex stainless steel (1)
- Debys-Waller-Factor (1)
- Deep learning (1)
- Defect detection (1)
- Defect prediction (1)
- Defekte Eigenspannung (1)
- Deformation (1)
- Deformed geometry (1)
- Dehydrogenation heat treatment (1)
- Dendrite growth (1)
- Density measurement (1)
- Dental materials (1)
- Deposition rate (1)
- Design for Additive Manufacturing (DfAM) (1)
- Design of experiments (1)
- Determinación Kth intrínseco (1)
- Diaspore (1)
- Die-cast aluminum (1)
- Die-casted aluminum (1)
- Diffraction Elastic Constants (1)
- Diffraction-elastic constants (1)
- Diffusion/diffusivity (1)
- Digital Image Correlation (1)
- Digital Image Correlation (DIC) (1)
- Digital Twin (1)
- Digital image correlation (DIC) (1)
- Digitale Bildkorrelation (DIC) (1)
- Digitale Qualitätssicherung (1)
- Digitization (1)
- Direct laser deposition (1)
- Directed Energy Depositio (1)
- Dislocation density (1)
- Dispersive XAS (1)
- Displacement (1)
- Dissimilar friction stir welding (1)
- Dissimilar joints (1)
- Dissimilar materials (1)
- Distortion simulation (1)
- Distortion upon baseplate removal (1)
- Ditigtal image correlation (1)
- Dritter Körper (1)
- Druckanschwingen (1)
- Ductile Cast Iron (1)
- Ductile iron (1)
- Duktiles Gusseisen (1)
- Duktilität (1)
- Dwell-time (1)
- Dynamic Fracture Toughness (1)
- Dynamic fracture toughness (1)
- Dynamic load (1)
- Dünnschichten (1)
- EA4T railway axle steel (1)
- EA4T steel (1)
- EDS (1)
- EDXRD (1)
- EN AW-2618A (1)
- Edge effects (1)
- Editorial Board (1)
- Effect of scanning strategies (1)
- Efficient modelling (1)
- Eigensapnnungen (1)
- Eigenspannungsmessung (1)
- Eindringprüfung (1)
- Einflussfaktoren (1)
- Einflussfaktoren auf Rissfortschrittsdaten (1)
- Einschlüsse (1)
- Elastic follow-up (1)
- Elastic-plastic fracture mechanics (1)
- Electrical connectors (1)
- Electro-plated nickel coatings (1)
- Electro-thermomechnical model (1)
- Electrochemical corrosion (1)
- Electrode geometry (1)
- Electroless Ni-P (1)
- Electromagnetic (1)
- Electromagnetic field (1)
- Electromagnetic influence (1)
- Electromagnetic stirring (1)
- Electromagnetic supported degassing (1)
- Electromagnetic weld pool support system (1)
- Electron backscatter diffraction (EBSD) (1)
- Electron beam (1)
- Electron microscopy (1)
- Elektonenstrahlschweißen (1)
- Elektromagnetische Badstütze (1)
- Elektromagnetische Porenreduktion (1)
- Elektromagnetische Schmelzbadstütze (1)
- Elektromagnetsiche Schmelzbadbeeinflussung (1)
- Elemenet transport (1)
- Element distribution (1)
- Ellipsometry (1)
- Emisssivity (1)
- Energetic reference parameter (1)
- Energieerzeugung (1)
- Energy parameters of the arc (1)
- Engine oil design (1)
- Engine oil testing (1)
- Entwicklung (1)
- Environment (1)
- Environmental effect (1)
- Environmental effects (1)
- Environmental impact categories (1)
- Equivalent stress concentration factors (1)
- Equivalent volumetric heat source (1)
- Ermüdungsfestigkeit (1)
- Ermüdungslebensdauer (1)
- Ermüdungsriss (1)
- Ermüdungsrissfortschritt (1)
- Erneuerbare Energien (1)
- Error sources analysis (1)
- Ersatzgeometrie (1)
- Erstarrungsrisse (1)
- FAT class (1)
- FAT class approach (1)
- FSW (1)
- Fabricación Aditiva (1)
- Fail-safe design (1)
- Fast single pulse response (1)
- Fatigue Crack Growth (1)
- Fatigue Limit (1)
- Fatigue S-N curve (1)
- Fatigue assessment (1)
- Fatigue crack initiation (1)
- Fatigue crack propagation stages (1)
- Fatigue crack propagation stagesdefects (1)
- Fatigue fracture (1)
- Fatigue lifetime prediction (1)
- Fatigue loading (1)
- Fatigue propagation threshold (1)
- Fatigue strength and life (1)
- Fatigue tests (1)
- Fatigue threshold (1)
- Feinkornbaustähle (1)
- Femtosecond (1)
- Femtosecond laser ablation (1)
- Ferngasleitung (1)
- Ferrit (1)
- Ferrite (1)
- Ferritic Alloys (1)
- Ferritic spheroidal (1)
- Ferritic steels (1)
- Ferritic welding electrode (1)
- Ferroelectricity/ferroelectric materials (1)
- Ferromagnetic steels (1)
- Fertigungstechnologie (1)
- Festigkeit (1)
- Fiber laser (1)
- Filler material (1)
- Filler metal modification (1)
- Filler wire (1)
- Fine-grained Steel (1)
- Finish milling (1)
- Finite Element Analysis (1)
- Finite Element Method (1)
- Finite element (FE) (1)
- Finite element method (FEM) (1)
- Finite-difference time-domain calculations (FDTD) (1)
- Fit4AM (1)
- Flange width (1)
- Flank (1)
- Flaw assessment procedures (1)
- Flaw detection (1)
- Flaw interaction (1)
- Flüssigmetallversprödung (1)
- Force distance curves (1)
- Formation (1)
- Formgedächtnislegierungen (1)
- Forschungsprojekt (1)
- Fracture assessment (1)
- Frequency domain (1)
- Fresnel reflection (1)
- Fretting (1)
- Fräsbearbeitung (1)
- Functionally Graded Materials (1)
- Funktionally Graded Material (1)
- Fusion Zone (1)
- Fusion welding (1)
- Fusion zone (1)
- Fusion zone profile (1)
- Fusion zone size (1)
- Fusion zone, nickel alloys (1)
- Fügequalität (1)
- Füllgradregelung (1)
- GMAwelding (1)
- GMR (1)
- GMR sensors (1)
- GTAW (1)
- Galvanized steel (1)
- Gap bridging (1)
- Gas analytic (1)
- Gas shielded arc welding (1)
- Gas storage (1)
- General analytical solutions (1)
- Gesetz von Archard (1)
- Geteilte Infrastruktur (1)
- Gleeble (1)
- Gleeble testing (1)
- Global stability criterion (1)
- Glow-discharge optical emission spectroscopy (1)
- Grade S960QL steel (1)
- Gradient-enhanced damage (1)
- Grain growth (1)
- Grain structure (1)
- Graphene oxide (1)
- Graphite cast iron (1)
- Graphite modules (1)
- Graphitentartung (1)
- Grease (1)
- Grease lubrication (1)
- Green Deal (1)
- Greens function method (1)
- Gusseisen mit Kugelgraphit GJS (1)
- H2-Abbau (1)
- H2Safety@BAM (1)
- HAZ (1)
- HCF (1)
- HT22 (1)
- Handbook (1)
- Hard metal (1)
- Hard metals (1)
- Hard tungsten (1)
- Hard turning (1)
- Hard-turning (1)
- Hardly separable problem (1)
- Hastelloy X (1)
- Haynes 282 (1)
- HeLa (1)
- Heat Input (1)
- Heat affected zone (1)
- Heat flow (1)
- Heat generation (1)
- Heat input (1)
- Heat recovery (1)
- Heat saturation function (1)
- Heating rate (1)
- Heißzug (1)
- High Temperature Corrosion (1)
- High brightness (1)
- High power (1)
- High process speeds (1)
- High speed laser cladding (1)
- High strength AlMgSi aluminium alloys (1)
- High strength fine grained structural steels (1)
- High temperature alloys (1)
- High temperature corrosion (1)
- High-Power Welding (1)
- High-entropy alloys (1)
- High-power fibre laser (1)
- High-pressure hydrogen environment (1)
- High-strength (1)
- High-strength filler metals (1)
- High-strength fine-grained steels (1)
- High-strength low-alloy steel (1)
- High-strength steel filler metal (1)
- High-strength steel sheets (1)
- High-strength structural steel (1)
- Highspeed plasma (1)
- Hochdruck (1)
- Hochentropiewerkstoff (1)
- Hochfeste Stähle (1)
- Hochleistungslaserstrahlschweißen (1)
- Hohlprofilknoten (1)
- Hokz-Holz-Kontakte (1)
- Hold time (1)
- Hollow specimen (1)
- Hollow tensile specimen (1)
- Holz-Holz-Kontakte (1)
- Hot Cracking (1)
- Hot cracking test (1)
- Hot tensile test (1)
- Hot working tool steel (1)
- Humidity (1)
- Hybrid Laser-Arc Welding (1)
- Hybrid part (1)
- Hybrid-laser-arc welding (1)
- Hybridschweißen (1)
- Hydraulic reactivity (1)
- Hydrogen Embrittlement (1)
- Hydrogen assisted stress corrosion cracking (1)
- Hydrogen concentration (1)
- Hydrogen degradation (1)
- Hydrogen dependent mechanical properties (1)
- Hydrogen environment (1)
- Hydrogen methane (1)
- Hydrogen trapping (1)
- Hydrogen-containing hot gas (1)
- Hydrophobin (1)
- Hydrostatic and arc pressure exceed the Laplace pressure (1)
- I-TRIBOMAT (1)
- I-Träger (1)
- IBESS (1)
- IBESS Approach (1)
- IBESS model for short cracks (1)
- IBESS-Prozedur (1)
- IN 718 (1)
- IN718 PBF-LB/M (1)
- IN725 (1)
- IR-Spektroskopie (1)
- IR-spectroscopy (1)
- Image registration (1)
- Impact absorbed energy (1)
- Impact damage (1)
- Imperfektion (1)
- Implant failures (1)
- Implant-supported prostheses (1)
- Implant-test (1)
- Implants (1)
- Implementierung (1)
- In situ LIBS (1)
- In situ Monitoring (1)
- In situ measurement, (1)
- In-Situ Testing (1)
- In-service (1)
- In-situ Process Monitoring (1)
- In-situ Prozessüberwachung (1)
- In-situ diffraction (1)
- In-situ thermography (1)
- In718 (1)
- Inclusion cluster (1)
- Inclusion size (1)
- Inclusions (1)
- Inconel 625 (1)
- Inconel 939 (1)
- Industrial and Manufacturing Engineering (1)
- Infractstructure (1)
- Infrared Thermography (1)
- Initial crack size (1)
- Inserts (1)
- Instumented indentation test (1)
- Integrated alignment features (1)
- Intelligent tribological material characterization (1)
- Intelligente tribologische Werkstoffcharakterisierung (1)
- Inter-layer time (1)
- Interfacial stability (1)
- Intergranular cracking (1)
- Interoperability (1)
- Interrupted milling (1)
- Intrinsic fatigue crack propagation threshold (1)
- Intrinsic fatigue propagation threshold (1)
- Iron (1)
- Iron aluminides (1)
- Iron-based alloys (1)
- J-Integral (1)
- Joining (1)
- Joining process (1)
- Joining technology (1)
- Journal (1)
- KI (1)
- Kaltriss und Schweißen (1)
- Kaltrissbildung (1)
- Kaltzähe Stähle (1)
- Karosseriebau (1)
- Keramikfeder (1)
- Kerbschlagbiegeversuch (1)
- Kerbschlagbiegeversuch, Untermaßproben, Normalproben, Skalierung von Ergebnissen (1)
- Kerbspannungskonzept (1)
- Keyhole stability (1)
- Keyhole welding (1)
- Kitagawa-Takahashi (K-T) diagram (1)
- Kl (1)
- Knotenweise Zwangsbedingungen (1)
- Kohlenstoffschichten (1)
- Kokillenguss (1)
- Komponenten (1)
- Kontamination von H2 (1)
- Korrosion (1)
- Kriechen (1)
- Kritische Last (1)
- Kryogene Temperatur (1)
- Kurz- und Langriss-Ermüdungsbruchmechanik (1)
- Kurzrissbruchmechanik (1)
- Kurzrisswachstum (1)
- Kurzzeitfestigkeit (1)
- Körperschall (1)
- Künstliche Neuronale Netze (1)
- L-PBF IN718 material (1)
- LA-ICP-SFMS (1)
- LCF region (1)
- LTT filler material (1)
- LTT filler metal (1)
- LTT-Legierung (1)
- LTT-Zusatzwerkstoff (1)
- LW (1)
- Lab-to-field up-scaling (1)
- Lab-to-field upscaling (1)
- Laboratory X-ray diffraction (1)
- Lamé curves (1)
- Lamé curves approximation (1)
- Large scale test (1)
- Laser Implantation (1)
- Laser Metal Deposition; Laser Beam Welding; Duplex; Stainless Steel (1)
- Laser Powder Bed Fusion (LPBF) (1)
- Laser Powder Bed Fusion (PBF-LB/M) (1)
- Laser Powder Bed Fusion (PBF-LB/M, L-PBF) (1)
- Laser Powder Bed fusion (1)
- Laser Welding (LW) (1)
- Laser cladding (1)
- Laser cutting (1)
- Laser keyhole welding (1)
- Laser melting (1)
- Laser powder-based directed energy deposition (1)
- Laser processing (1)
- Laser surface texturing (1)
- Laser surfacing (1)
- Laser- und Lichtbogenenergie (1)
- Laser-Pulver-Auftragschweißen (LPA) (1)
- Laser-Pulver-Auftragschweißen; Laserstrahlschweißen, Duplex, Pufferschichten (1)
- Laser-based additive manufacturing (1)
- Laser-based powder bed fusion of metal (PBF-LB/M) (1)
- Laser-beam welding, (1)
- Laser-cutting (1)
- Laser-hybrid welding (1)
- Laser-induced periodic surface structures, LIPSS (1)
- Laser-induzierte periodische Oberflächenstrukturen (1)
- Laser-metal-depositon (1)
- Laser-plasma hybrid (1)
- Laserauftragschweißen (1)
- Laserdispergieren (1)
- Laserstrahl-Hybridschweißen (1)
- Laserstrahlhybridschweißen (1)
- Lattice structure (1)
- Lead-free ceramics (1)
- Leichtbauprinzipien (1)
- Life Cycle Assessment (LCA) Fusion welding (1)
- Life Cycle Assessment (LCA) Impact categories (1)
- Life Cycle Assessment (LCA) Schweißprozesse (1)
- Life Cycle Assessment (LCA) Umweltwirkungen (1)
- Life cycle assessment (1)
- Life prediction (1)
- Lifetime (1)
- Ligamentplastifizierung (1)
- Lightweight principles (1)
- Liquid Metal Embrittlement (LME) (1)
- Liquid hydrogen (1)
- Liquid phase sintering (1)
- Local Weld Geometry (1)
- Local critical strain (1)
- Local fatigue spproaches (1)
- Localized Laser Dispersing (1)
- Loch- u. Spaltkorrosion (1)
- Lorentz force (1)
- Lorentz forces (1)
- Low Temperature Toughness (1)
- Low Transformation Temperature (1)
- Low carbon steel (1)
- Low cycle fatigue (1)
- Low feed rates (1)
- Low heat input Gma welding (1)
- Low transformation temperature (1)
- Low transformation temperature filler materials (1)
- Low-Cycle-Fatigue (1)
- L‐PBF (1)
- MAG (1)
- MAG Prozesssteuerung (1)
- MAG-Welding (1)
- MANUFACT (1)
- MIC (1)
- MWIR (1)
- Machinability (1)
- Machine Learning (1)
- Machine learning (1)
- Machine vision (1)
- Magnesium Alloy (1)
- Magnesium alloy (1)
- Magnetic bath support (1)
- Magnetic stray field (1)
- Magnetohydrodynamics (MHD) (1)
- Magnettechnik (1)
- Manufact (1)
- Margin design (1)
- Maritime Components (1)
- Master Curve (1)
- Master Curve Method (1)
- MatCom (1)
- Matching ferritic filler metal (1)
- Material modeling (1)
- Materialmodellierung (1)
- Materialprüfung (1)
- Materials database (1)
- Materialschaedigung (1)
- Materialschädigung (1)
- Materialuntersuchungen (1)
- Mechanical Properties (1)
- Mechanical anisotropy (1)
- Mechanical properties of the joints (1)
- Mechanical property (1)
- Mechanical-technological properties (1)
- Mechanisch technologische Kennwerte (1)
- Mecánica de Fractura (1)
- Melt pool behaviour (1)
- Melt pool defects (1)
- Melt pool depth (1)
- Melt-pool-monitoring (1)
- Melting (1)
- Messung (1)
- Metal Magnetic Memory (1)
- Metal additive manufacturing (MAM) (1)
- Metal matrix composite (1)
- Metal vapor (1)
- Metallic components (1)
- Metallic vapour plume (1)
- Metals (1)
- Methan (1)
- Micro computed tomography (1)
- Microalloyed steels (1)
- Microcracking (1)
- Microfocus X-ray computer tomography (μCT) (1)
- Micromechnical properties (1)
- Microstructure Tensile strength (1)
- Microstructure characterisation (1)
- Microtribology (1)
- Mikro-Computertomographie (1)
- Mikroorganismen (1)
- Mikrostrukturentwicklung (1)
- Mild steels (1)
- Minimum Waiting Time (1)
- Minimum waiting time (1)
- Mining head gear (1)
- Mis-match (1)
- Misalignment of edges (1)
- Mischverbindung (1)
- Misfit (1)
- Mismatch (1)
- Mittelrippendefekt (1)
- Mixing behavior (1)
- Mobility (1)
- Mock-up (1)
- Model order reduction (1)
- Modeling (1)
- Modellierung (1)
- Modelling studies (1)
- Modified Varestraint-/Transvarestraint test (1)
- Modifizierter Sprühlichtbogen (1)
- ModuH2Pipe@BAM (1)
- Molybdenum carbide (1)
- Molybdenum disulphide (1)
- Monotonic and cyclic crack driving force (1)
- Monte-Carlo simulation (1)
- Morphology control (1)
- Multi - physical modeling (1)
- Multi-materials joining (1)
- Multi-pass welding (1)
- Multi-principal element alloy (1)
- Multielement-Legierung (1)
- Multiple crack initiation (1)
- Multiple crack propagation (1)
- Multiple cracking (1)
- Multiple-principal element alloy (1)
- NIR (1)
- Nachschlagewerk (1)
- Nahtgeometrie (1)
- Nanoadditive (1)
- Nanotribology (1)
- Nanowear (1)
- Narrow gap welding (1)
- Narrow-gap welding (1)
- Natural silver wires (1)
- NbC cermets (1)
- Near-surface X-ray diffraction (1)
- Near-threshold regime (1)
- Necking (1)
- Neural networks (1)
- Neutron Imaging (1)
- Neutron and X-ray diffraction (1)
- Neutron tomography (1)
- Neutronbeugungsverfahren (1)
- Neutronenbeugung (1)
- Neutronendiffraktion (1)
- Neutronenradiographie (1)
- Neutronentomographie (1)
- New technologies (1)
- Ni-based austenitic filler metal (1)
- Ni-based austenitic welding electrode (1)
- Ni-based superalloy (1)
- NiTi-Legierungen (1)
- Nickel-based superalloy (1)
- Nickel-based superalloys (1)
- Nickel-iron-alloy (1)
- Nickelbasis-Superlegierungen (1)
- Niobcarbid (1)
- Niobcarbid (NbC) (1)
- Niobium alloying (1)
- Node-release (1)
- Non-destructive Materials (1)
- Non-destructive testing (1)
- Non-sharp defects (1)
- Normalproben (1)
- Normen (1)
- Normung (1)
- Normung Roadmap (1)
- Notch stress approach (1)
- Novel metrology (1)
- Novel optical metrology (1)
- Nuclear reactor systems (1)
- Numerical analysis (1)
- Numerical investigation (1)
- Numerical simulations (1)
- Numerical welding simulation (1)
- Numerical welding simulations (1)
- Numerische ISmulation (1)
- Oberflächenmessung (1)
- Oberflächenmodifikation (1)
- Oberflächenschädigung (1)
- Oberflächenstrukturierung (1)
- Offshore Windenergie (1)
- Offshore steel grade (1)
- Offshore wind turbine (1)
- Offshore wind turbines (1)
- Online monitoring (1)
- Open Data (1)
- Open source (1)
- OpenScience (1)
- Optical Emission Spectroscopy (1)
- Optical emission spectroscopy (1)
- Optical measurement technique (1)
- Optical measurment technique (1)
- Optische Emissionsspektroskopie (1)
- Optische Emissionsspektroskopie (OES) (1)
- Oscillating ball-on-disc test (1)
- Oszillierendes Magnetfeld (1)
- Overview (1)
- Oxide-induced crack closure (1)
- PAEKs (1)
- PBF/LB (1)
- PCA (1)
- PEAK (1)
- PTFE composite (1)
- PTFE composites (1)
- Parabolic flight (1)
- Partial penetration laser hybrid welding (1)
- Partial penetration welding (1)
- Particle erosion (1)
- Particle transfer (1)
- Peak stress method (1)
- Peak stress method (PSM) (1)
- Pearlitic microstructure (1)
- Permeation (1)
- Perspektiven (1)
- Phase field method (1)
- Phase field modeling (1)
- Phasenumwandlung (1)
- Photogrammetry (1)
- Photooxidation (1)
- Physical vapor deposition (PVD) (1)
- Piezoresistive (1)
- Piezoresistive cantilever (1)
- Pipe Welding (1)
- Pipe weld preparation (1)
- Pipeline steel of grade X120 (1)
- Plane crystalization (1)
- Plasma cutting (1)
- Plasma transferred arc welding (1)
- Plasma-cut samples (1)
- Plasma-transferred-arc (1)
- Plastic material flow (1)
- Plume heating (1)
- Poly(acrylic acid) (1)
- Polyethylene (1)
- Polymer (1)
- Polymere (1)
- Polymerkomposite (1)
- Pool dimensions (1)
- Pore formation (1)
- Poren (1)
- Porenreduktion (1)
- Porosity reduction (1)
- Porosität (1)
- Post Weld Heat Treatment (PWHT) (1)
- Post processing heat treatment (1)
- Potential drop technique (1)
- Potentiodynamic measurements (1)
- Powder Analysis (1)
- Powder Bed Fusion of Metals with Laser Beams (1)
- Ppreheating temperature (1)
- Precipitation hardening aluminum alloys (1)
- Preciptiates (1)
- Predicción vida a fatiga (1)
- Preheatin (1)
- Preheating temperature (1)
- Pressure-dependent solubility (1)
- Prevention (1)
- Primär- und Sekundärspannungen (1)
- Principal Component Analysis (1)
- Principal stress (1)
- Probabilistic Assessment (1)
- Probabilistic assessment (1)
- Probengeometrie (1)
- Probetas miniatura (1)
- Process Chain Integration (1)
- Process Monitoring (1)
- Process Simulation (1)
- Process development (1)
- Processing (1)
- Product standard (1)
- Profilvermessung (1)
- Projekt AGIL - Alterung additiv gefertigter metallischer Materialien und Komponenten (1)
- Projektbegleitender Ausschuss (1)
- Proper generalized decomposition (1)
- Prostheses (1)
- Prozesse (1)
- Prozessregelung (1)
- Prozesssimulation (1)
- Prüfung (1)
- Pulse electric current sintering (1)
- Pulverbettbasiertes Laserstrahlschmelzen (1)
- QI Digital (1)
- Quality-X (1)
- Qualität (1)
- Quantitative bioimaging (1)
- R-curve analysis (1)
- Radiography (1)
- Radiological inspections (1)
- Rail tracks (1)
- Rauheit (1)
- Ray teacing (1)
- Ray-tracing methods (1)
- Reactor conditions (1)
- Reciprocating sliding (1)
- Reciprocating sliding wear (1)
- Recomendaciones procedimiento de ensayo (1)
- Recycling (1)
- Reduced Order Model (1)
- Reduced order modelling (1)
- Reference data (1)
- Reference standards (1)
- Refraction (1)
- Regelwerke (1)
- Reibungsreduktion (1)
- Relative humidity (1)
- Reliability (1)
- Repair of gas turbine blades (1)
- Representative Specimens (1)
- Representative material properties (1)
- Repräsentative Werkstoffeigenschaften (1)
- Research and Development (1)
- Residual lifetime (1)
- Residual stress in AM (1)
- Residual stress state (1)
- Resistance Spot Welding (RSW) (1)
- Restlebensdauerprognose (1)
- Retained Austenite (1)
- Ringversuch (1)
- Ripples (1)
- Riss (1)
- Rissausbreitung (1)
- Rissausbreitungsstadien (1)
- Rissbildung (1)
- Rissfortschrittsdaten (1)
- Rissschließfunktion (1)
- Rissschließphenomen (1)
- Rissspitzenbelastung (1)
- Risswachstum (1)
- Risswiderstand (1)
- Roughness (1)
- Rundnähte (1)
- Röntgenradiographie (1)
- S-N diagram (1)
- S-N probabilistic field (1)
- S-Phase (1)
- SLM printed plasma torch (1)
- SPS (1)
- SS316L alloy (1)
- SWIR (1)
- SWIR thermography (1)
- Safety (1)
- Sample random results (1)
- Scan strategies (1)
- Scan strategy influence (1)
- Schadenstolerante Bauteilauslegung, (1)
- Schadenstolerante Bauteilauslegung, Restlebensdauer, intrinsischer Schwellenwert gegen Ermüdungsrissausbreitung (1)
- Schallemissionsanalyse (1)
- Schallemissionsanalyse (SEA) (1)
- Schallemmission (1)
- Schlichtfräsen (1)
- Schmelzbadstütze (1)
- Schmiermittel (1)
- Schmierstoffe (1)
- Schmierung (1)
- Schutzgas (1)
- Schweißdatenmanagement (1)
- Schweißeigenspannungs-Tiefen-Profile (1)
- Schweißen von kaltzähen Stählen (1)
- Schweißnahtgeometrie (1)
- Schweißprozesse (1)
- Schweißprozessparameter (1)
- Schweißsimulation (1)
- Schweißstruktursimulation (1)
- Schweißtechnik (1)
- Schweißunregelmäßigkeiten (1)
- Schweißverbindung (1)
- Scratches (1)
- Secondary heat source (1)
- Secondary stresses (1)
- Selective laser beam melting (1)
- Sensor (1)
- Sensorik (1)
- Shared infrastruture (1)
- Shielding gas (1)
- Shipbuilding steel (1)
- Short Crack Propagation (1)
- Short crack Propagation (1)
- Short crack propagation (1)
- Shrinkages (1)
- Sicherheit (1)
- Silicon nitride (1)
- SimCoLas (1)
- Single asperity (1)
- Single asperity contact (1)
- Single cell (1)
- Single-pass welding (1)
- Skalierung von Ergebnissen (1)
- Sliding friction (1)
- Slidng wear (1)
- Slip-rolling (1)
- Slow Strain Rate Testing (1)
- Small scale testing (1)
- Snergiedispersive Röntgendiffraktion (1)
- Solidification Cracking (1)
- Solidification behaviour (1)
- Spannung (1)
- Spannungs-Dehnungs-Verhalten (1)
- Spannungsrisskorrosion (1)
- Spark plasma sintering (1)
- Split Hopkinson bar (1)
- Spreading (1)
- Stabilität von Eigenspannungen (1)
- Stahllegierungen (1)
- Stainless steel (1)
- Staircase method (1)
- Standard test piece (1)
- Standardisation (1)
- Standardization (1)
- Static load (1)
- Statistical analysis (1)
- Statistical distributions (1)
- Statistics (1)
- Statistische Versuchsplanung (1)
- Steady-state weld pool (1)
- Steel and Al (1)
- Steelmaking slag (1)
- Stiffness (1)
- Stift-Scheibe-Anordnung (1)
- Stochastic sample functions (1)
- Strain fields prediction (1)
- Strain rates (1)
- Strain-free lattice references (1)
- Strain-free lattice spacing (1)
- Strain-rate (1)
- Strength mismatch (1)
- Stress Relief Cracking (SRC) (1)
- Stress balance (1)
- Stress balance condition (1)
- Stress-strain behavior (1)
- Stretch-Zone (1)
- Structural integrity assessment procedure (1)
- Structural steel (1)
- Structure analysis (1)
- Sub-oxide (1)
- Sub-size test piece (1)
- Sulphidation (1)
- Superalloy (1)
- Superconducting magnets (1)
- Supermartensit (1)
- Supermartensitic steel (1)
- Supermatensitischer Stahl (1)
- Support configurations (1)
- Support structures (1)
- Supportless (1)
- Surface (1)
- Surface Integrity (1)
- Surface cracks (1)
- Surface preparation (1)
- Surface structures (1)
- Surface temperature (1)
- Synchrotron X-ray diffraction (1)
- Synchrotron diffraction (1)
- Synchrotron radiation (1)
- Synchrotronbeugung (1)
- Systematische Schadensanalysen, Prozeduren (1)
- T24 / 7CrMoVTiB10-10 (1)
- TEKKEN test (1)
- TEM (1)
- TIG (1)
- TIG-welding (1)
- TaC (1)
- Tantalum carbide (1)
- Technical crack detection (1)
- Technologies (1)
- Temperature behavior (1)
- Temperature dependence (1)
- Temperature dependent absorption (1)
- Temperatureinfluss (1)
- Tensile loading (1)
- Tensile resistance spot welding experiment (1)
- Tensile strength (1)
- Test procedure (1)
- Test standard (1)
- Testing (1)
- Testing parameters (1)
- Themral cycles (1)
- Thermal conductivity device (1)
- Thermal-desorption spectroscopy (1)
- Thermal-fluid-structure coupling model (1)
- Thermo-fluid dynamics (1)
- Thermodynamic modelling (1)
- Thermograhy (1)
- Thermomechanische Eigenschaften (1)
- Thick materials (1)
- Thick plate welding (1)
- Thick plates (1)
- Thick steel plates (1)
- Thick-Walled Steel (1)
- Thick-walled (1)
- Thick-walled Structures (1)
- Thick-walled steels (1)
- Thick-walled structures (1)
- Thin steel plates (1)
- Thoughness (1)
- Three-dimensional crystallization (1)
- Threshold regime (1)
- TiC (1)
- TiN (1)
- Time over threshold (1)
- Time-of-Flight secondary ion mass spectrometry (1)
- Titanaluminid (1)
- Titandiborid (1)
- Titanium carbide (1)
- Tomography (1)
- Tool (1)
- Tool service life (1)
- Tool-workpiece interaction (1)
- Toughening mechanisms (1)
- Traglastverhalten (1)
- Transformable steels (1)
- Transient stresses (1)
- Transition temperature (1)
- Tribo-Analytik (1)
- Tribo-analytics (1)
- Tribo-film (1)
- Tribo-tests (1)
- Tribological behavior (1)
- Tribological data (1)
- Tribologische Datenbank (1)
- Tribologsches Charakterisierungsdienste (1)
- Tribometer (1)
- Tribooxidation (1)
- Triobology (1)
- Trockenreibung (1)
- Trägergasheißextraktion (1)
- Tubular X-joints (1)
- Tubular joints (1)
- Tungsten carbide (WC) (1)
- Turbine components (1)
- Two-dimensional solidification (1)
- Two-run welding technique (1)
- UHMWPE (1)
- UP Schweißen (1)
- UV radiation (1)
- UV-blocker addition (1)
- Ultra-high strength steel (1)
- Ultraschallunterstützter Fräsprozess (1)
- Ultrasonic Assisted Machining (1)
- Ultrasonic assited machining (1)
- Unterirdische Speicher (1)
- Untermaßproben (1)
- Unterpulverschweißen (1)
- V-notch impact toughness (1)
- Vakuum (1)
- Vapor recondensation (1)
- Varestraint Test (1)
- Vernetzte Produktion (1)
- Verschleiß-Map (1)
- Verschleißkoeffizient (1)
- Verschleißreduktion (1)
- Verschleißschutz (1)
- Versetzungsstrukturen (1)
- Verzug (1)
- Viskosität (1)
- Void defect formation mechanism (1)
- WAAM Ti-6Al-4V (1)
- WC (1)
- WEBAM (1)
- WIG (1)
- WIG Schweißen (1)
- WRC 92 (1)
- Waiting time (1)
- Warmfeste Stähle (1)
- Warmfester Stahl (1)
- Wasserstoffbindungsverhalten (1)
- Wasserstoffdiffusion (1)
- Wasserstoffgradient (1)
- Wasserstoffkonzentration (1)
- Wasserstofflagerung (1)
- Wasserstoffunterstützte Kaltrissbildung (1)
- Wear mechanism (1)
- Wear mechanisms (1)
- Wear particles (1)
- Wear rate (1)
- Weathering tests (1)
- Weld end crater (1)
- Weld imperfections (1)
- Weld joint (1)
- Weld metal cracking (1)
- Weld pool modeling (1)
- Weld root (1)
- Weld seam geometry (1)
- Weld toe geometry (1)
- Weldability (1)
- Welded joint (1)
- Welding Current (1)
- Welding Simulation (1)
- Welding parameter (1)
- Welding process simulation (1)
- Welding processing influences (1)
- Weldx (1)
- Werkstatt (1)
- Werkstoff (1)
- Werkstoffdatenbank (1)
- Werkstoffe (1)
- Werkzeug (1)
- Werkzeuglebensdauer (1)
- Werkzeugmodifikation (1)
- Werstoff- und geometrische Imperfektion (1)
- White light interferometry (1)
- Widerstandpunktschweißen (1)
- Windkraftanlagen (1)
- Wineglass shape (1)
- Wire Electron Beam Additive Manufacturing (1)
- Wire feed laser beam welding (1)
- Wire-based additive manufacturing (1)
- Wärmbehandlung (1)
- Wärmeakkumulation (1)
- X-ray and neutron diffraction (1)
- X-ray computed tomography (1)
- X-ray computed tomography (XCT) (1)
- X-ray refraction (1)
- X153CrMoV12 (1)
- X8Ni9 (1)
- XRF (1)
- Year in Review (1)
- Zero wear (1)
- Zerspanungswerkzeug (1)
- Zinc (1)
- Zinkbeschichtung (1)
- ZnO films (1)
- ZnO nanorods Nanocrystalline (1)
- Zugversuch (1)
- Zyklische Belastung (1)
- a-C:H (1)
- abtragende Glasbearbeitung (1)
- additive manufacturing (1)
- arbidic austempered ductile iron (1)
- carrier gas hot extraction (1)
- cold cracking safety (1)
- contact resonance (1)
- contour method (1)
- deposition welding (1)
- digital image correlation (1)
- digitalisation (1)
- dual phase steel (1)
- duplex stainless steel (1)
- fatigue crack growth (1)
- high-resolution camera (1)
- high-strength steel (1)
- highspeed plasma laser cladding (1)
- hochfester Stahl (1)
- hybrid repair (1)
- i-Tribomat (1)
- infrared Thermography (1)
- keyhole dynamics (1)
- laser energy absorption (1)
- laser energy distribution (1)
- laser hybrid welding (1)
- miniature specimens; FCGR curves; intrinsic threshold (1)
- molten pool (1)
- neutron diffraction (1)
- numerical modeling (1)
- pL-droplets (1)
- position detection (1)
- powder bed fusion of metals utilizing a laser beam (1)
- relative Luftfeuchtigkeit (1)
- residual stress analysis (1)
- resistance spot welding (1)
- thermal cycles (1)
- thick plate welding (1)
- µ-gravity (1)
- µCT-analysis (1)
- Äquivalente Spannungskonzentrationsfaktoren (1)
- Äquivalente Wärmequelle (1)
- Ökonomische und ökologische Vorteile (1)
- Überblick (1)
- μCT (1)
- ГИДРОДИНАМИКА (1)
- КОНВЕКЦИЯ (1)
- ЛАЗЕРНАЯ СВАРКА (1)
- МЕТОД КОНЕЧНЫХ ЭЛЕМЕНТОВ (1)
- СВАРОЧНАЯ ВАННА (1)
- ТЕМПЕРАТУРНОЕ ПОЛЕ (1)
- ТЕПЛОПРОВОДНОСТЬ (1)
- ЧИСЛЕННОЕ МОДЕЛИРОВАНИЕ (1)
- кратер шва (1)
- кристаллизация, (1)
- плавление, (1)
- сварочная ванна (1)
- температурное поле (1)
- функция теплонасыщения (1)
Organisationseinheit der BAM
- 9 Komponentensicherheit (1274) (entfernen)
Paper des Monats
- ja (7)
Eingeladener Vortrag
- nein (611)
Carrier gas hot extraction (CGHE) is a commonly applied technique for determination of hydrogen in welded joints using a thermal conductivity device (TCD) for quantitative measurement. The CGHE is based on the accelerated hydrogen effusion due to thermal activation at elevated temperatures. The ISO 3690 standard suggests different specimen geometries as well as necessary minimum extraction time vs. temperature. They have the biggest influence on precise hydrogen determination. The present study summarizes the results and experience of numerous test runs with different specimen temperatures, geometries and factors that additionally influence hydrogen determination. They are namely: specimen surface (polished/as-welded), limited TCD sensitivity vs. specimen volume, temperature measurement vs. effects of PID-furnace controller as well as errors due to insufficient data assessment. Summarized, the temperature is the driving force of the CGHE. Two different methods are suggested to increase the heating rate up the reach the desired extraction temperature without changing the experimental equipment. Suggestions are made to improve the reliability of hydrogen determination depended on the hydrogen signal stability during extraction accompanied by evaluation of the recorded data. Generally, independent temperature measurement with calibration specimens is useful for further data analysis, especially if this data is used for calculation of trapping kinetics by thermal desorption analysis (TDA).
Das DVS-Vorhaben 01.3211 „Herstellung beanspruchungsgerechter Oberflächen durch Kombination innovativer additiver und abtragender Fertigungsschritte an hochbelasteten Komponenten“ ist ein Kooperationsprojekt der Bundesanstalt für Materialforschung und -prüfung (BAM) und dem Institut für Schweißtechnik und Trennende Fertigungsverfahren (ISAF) der Technischen Universität Clausthal. Das Übergeordnete Projektziel ist das Erlangen von Erkenntnissen für eine sichere und wirtschaftliche, kombinierte additive und abtragende Fertigung aus kostenintensiven Werkstoffen hochbelasteter Komponenten insbesondere für KMU. Dabei stehe die beiden Werkstoffe CoCr26Ni9Mo5W (2.4681) und FeNi36 (1.3912) im Fokus. Mittels Modifikation der Schweißzusätze sind homogen und isotrop ausgeprägte Werkstoffeigenschaften und eine Erhöhung der Prozessstabilität und Fertigungsfreiheitsgrade bei der additiven Fertigung erzielbar. Darüber hinaus wird der Einfluss nachfolgender abtragender Bearbeitungsschritte des ultraschallunterstützen und des konventionellen Fräsprozesses untersucht. Im Laufe der Sitzung des projektbegleitenden Ausschusses (PbA) wurde der aktuelle Bearbeitungsstand sowie der Zeitplan vorgestellt. Darüber hinaus wurde mit dem PbA über die bereits erzielten Ergebnisse diskutiert. Abschließend wurde ein kurzer Ausblick über die zeitnah beginnenden Arbeiten beider Forschungseinrichtungen sowie ein Überblick über die vorhabenbezogenen Aufwendungen der Wirtschaft und des Ergebnistransfers in die Wirtschaft gegeben.
Laser metal deposition (LMD) is an established technology for two-dimensional surface coatings. It offers high deposition rates, high material flexibility, and the possibility to deposit material on existing components. Due to these features, LMD has been increasingly applied for additive manufacturing of 3D structures in recent years. Compared to previous coating applications, additive manufacturing of 3D structures leads to new challenges regarding LMD process knowledge. In this paper, the process steps for LMD as additive manufacturing technology are described. The experiments are conducted using titanium alloy Ti-6Al-4Vand Inconel 718. Only the LMD nozzle is used to create a shielding gas atmosphere. This ensures the high geometric flexibility needed for additive manufacturing, although issues with the restricted size and quality of the shielding gas atmosphere arise. In the first step, the influence of process parameters on the geometric dimensions of single weld beads is analyzed based on design of experiments. In the second step, a 3D build-up strategy for cylindrical specimen with high dimensional accuracy is described. Process parameters, travel paths, and cooling periods between layers are adjusted. Tensile tests show that mechanical properties in the as-deposited condition are close to wrought material. As practical example, the fir-tree root profile of a turbine blade is manufactured. The feasibility of LMD as additive technology is evaluated based on this component.
The chapter starts with a brief introduction about corrosion, which is defined as the interdependency between a metal, a corrosive environment, and the respective component design. The second section introduces the most important forms of aqueous electrochemical corrosion (uniform corrosion, galvanic corrosion, selective and intergranular corrosion, and finally pitting and crevice corrosion in the case of passive layer forming metals). In addition, electrochemical corrosion under applied mechanical load is introduced (stress corrosion cracking, hydrogen-assisted cracking, corrosion fatigue), as well as special forms of corrosion (erosion, fretting, and microbiologically induced corrosion). The third section of this chapter introduces (mostly dry) chemical corrosion and high-temperature corrosion (oxidation, carburization, high-temperature hydrogen attack, sulfurization, nitriding, halogenation). As in the case of electrochemical corrosion, chemical corrosion can also be superimposed by mechanical loads. Finally, general facts on the testing of corrosion are introduced.
As opposed to reviewing results on experimental determination of residual stress by diffraction, this paper discusses the open issues when dealing with residual stress determination in additive manufactured parts, in particular those manufactured with laser powder bed fusion techniques. Three points are addressed in detail: (a) the proper determination of the strain-free reference d0, (b) the problem of the determination of the principal axes, and (c) the use of the correct diffraction elastic constants. It is shown that all methods to determine the strain-free reference d0 suffer from caveats, and care must be taken in evaluating the most suitable for the problem being tackled. In addition, it is shown that, in some systems, the principal axes do correspond to the geometrical axes of the specimen, but this needs to be systematically checked, especially in the case of uni- or bidirectional hatching strategies. Finally, the need to experimentally determine the proper diffraction elastic constants is underlined, especially in the case of strongly textured specimens, which again depends on the deposition strategy.
The weld pool dynamics and shape play a fundamental role in keyhole mode welding. The presented work aims the experimental and numerical investigation of the influence of the weld pool characteristics on the formation of hot cracking. The experimental procedure allows recording the molten pool in the longitudinal section of a butt joint configuration of 15 mm thick structural steel and transparent quartz glass by using a high-speed video camera and two thermal imaging cameras. The observations show that the dimensions of the weld pool vary depending on the depth. The regions close to the surface form a teardrop-shaped weld pool. A bulge-region and its temporal evolution are observed approximately in the middle of the depth of the weld pool, where hot cracking appears. A numerical framework including models for the weld pool dynamics, global temperature field, transient stress state, crystal growth, diffusion and macro-segregation and subroutines for their one-way couplings is developed. The numerically obtained and experimentally observed results are in a good agreement. It is shown that the bulge-region leads to a delay in the solidification behavior, increased temporal tensile stresses and accumulation of impurities in the defect region and hence enhance the probability of hot cracking formation.
The prediction of porosity is a crucial task for metal based additive manufacturing techniques such as laser powder bed fusion. Short wave infrared thermography as an in-situ monitoring tool enables the measurement of the surface radiosity during the laser exposure. Based on the thermogram data, the thermal history of the component can be reconstructed which is closely related to the resulting mechanical properties and to the formation of porosity in the part. In this study, we present a novel framework for the local prediction of porosity based on extracted features from thermogram data. The framework consists of a data pre-processing workflow and a supervised deep learning classifier architecture. The data pre-processing
workflow generates samples from thermogram feature data by including feature information from multiple subsequent layers.
Thereby, the prediction of the occurrence of complex process phenomena such as keyhole pores is enabled. A custom convolutional neural network model is used for classification. Themodel is trained and tested on a dataset from thermographic in-situ monitoring of the manufacturing of an AISI 316L stainless steel test component. The impact of the pre-processing parameters and the local void distribution on the classification performance is studied in detail. The presented model achieves an accuracy of 0.96 and an f1-Score of 0.86 for predicting keyhole porosity in small sub-volumes with a dimension of (700 × 700 × 50) μm3. Furthermore, we show that pre-processing parameters such as the porosity threshold for sample
labeling and the number of included subsequent layers are influential for the model performance. Moreover, the model prediction is shown to be sensitive to local porosity changes although it is trained on binary labeled data that disregards the actual sample porosity.
A fundamental study of physical mechanisms of wineglass-shaped fusion zone profile in laser melting
(2024)
The fusion zone geometry in laser melting processes e.g., laser welding and laser-based additive manufacturing, of metallic materials has commonly a wineglass-shaped profile which is critical to the grain orientation and stress distribution. Hereby, we adopt for the first time a decoupling work through a combination of multi-physics modelling and experiments to reveal the fundamental mechanisms of this special morphology. Two physicsbased easy-to-use metal vapour models are proposed to consider the vapour’s momentum and thermal effects separately. It is found that the direct laser energy absorption and Marangoni shear stress which are widely hypothesised to dominate the wineglass-shape formation show only a minor influence. The additional heating from the metallic vapour plume rather than its momentum impact contributes predominantly to the enlarging of the molten pool top region, resulting directly in the formation of the wineglass-shaped fusion zone. The generality of the plume heating effect is also validated in two types of materials (steel and Al) in a wide range of parameters.
A technique for calculating the main solidification parameters for a two-dimensional columnar crystal growth during complete penetration laser beam welding of thin steel sheets was developed. Given that the weld pool interface is described by Lamé curves (superellipses) within the horizontal plane of growth, general analytical solutions were derived for the geometry of the crystal axis and the corresponding growth rate and cross-sectional area of the crystal. A dimensionless analysis was performed to provide insights on the dependence of the solidification parameters on the shape and dimensions of the rear part of the weld pool boundary. The derived solutions were applied for the case of complete penetration laser beam keyhole welding of 2 mm thick 316L austenitic chromium-nickel steel sheets. It was shown that the reconstruction of the weld pool boundary with Lamé curves provides higher accuracy and flexibility compared to results obtained with elliptical functions. The validity of the proposed technique and the derived analytical solutions was backed up by a comparison of the obtained solutions to known analytical solutions and experimentally determined shapes and sizes of the crystals on the top surface of the sheet. The dimensions of the calculated crystal axis correlated well with the experimentally obtained results.
The main solidification parameters, namely the crystal axis, the growth rate, and the cross-sectional area of the columnar crystal control the primary microstructure and thus the final weld seam properties.
Limited understanding of solidification parameters due to complexities in experimental and theoretical weld pool boundary determination and
its mathematical description.
Application of local Lamé curves for efficient weld pool boundary reconstruction Derivation of general analytical solutions for the main solidification parameters of a two-dimensional columnar crystal growth during laser beam welding of thin steel sheets.
The Lamé curves approximation technique was successfully applied for the reconstruction of the rear part of the two-dimensional steady-state weld pool boundary. General analytical expressions for the main solidification parameters, namely the crystal axis, the growth rate and the cross-sectional area of the crystal were derived.
The derived expressions and herewith obtained results were verified and validated by comparing them to known theoretical solutions and experimental measurements. Dimensionless analysis of the influence of the size and shape of the rear weld pool boundary on the solidification parameters was provided.
The derived general solutions and the analysis provided allow for critical welding parameters to be estimated and adapted accordingly to improve the welding process.