Filtern
Erscheinungsjahr
Dokumenttyp
- Vortrag (44)
- Zeitschriftenartikel (43)
- Beitrag zu einem Tagungsband (23)
- Beitrag zu einem Sammelband (4)
- Forschungsbericht (4)
- Buchkapitel (2)
- Dissertation (1)
- Posterpräsentation (1)
- Forschungsdatensatz (1)
Sprache
- Englisch (67)
- Deutsch (54)
- Mehrsprachig (1)
- Serbisch (1)
Schlagworte
- Neural networks (7)
- Welding simulation (7)
- Aluminium (6)
- Digitalisierung (6)
- Grain refinement (6)
- Welding (6)
- Ökobilanzierung (6)
- Gründungsstrukturen (5)
- Laser beam welding (5)
- Leichtbau (5)
Organisationseinheit der BAM
- 9 Komponentensicherheit (49)
- 9.3 Schweißtechnische Fertigungsverfahren (49)
- 7 Bauwerkssicherheit (7)
- 7.2 Ingenieurbau (4)
- 5 Werkstofftechnik (2)
- 5.2 Metallische Hochtemperaturwerkstoffe (2)
- 7.7 Modellierung und Simulation (2)
- 8 Zerstörungsfreie Prüfung (2)
- 5.1 Mikrostruktur Design und Degradation (1)
- 5.5 Materialmodellierung (1)
Eingeladener Vortrag
- nein (44)
In manufacturing, fusion welding processes use a lot of resources, which presents an opportunity to reduce environmental impact. While there is a general understanding of the environmental impact of these processes, it is difficult to quantitatively assess key parameters. This study introduces a welding-specific methodology that uses life cycle assessment (LCA) to evaluate the environmental impact of fusion welding technologies. Our approach analyses the main parameters that affect the environmental performance of different welding techniques, including traditional methods and additive manufacturing through the Direct Energy Deposition-Arc (DED-Arc) process. We integrate real-time resource usage data to offer an innovative framework for directly deriving environmental impacts. This research contributes to optimising welding processes by providing a precise and quantifiable measure of their ecological impact, facilitating the advancement of sustainable manufacturing practices.
Direct energy deposition additive manufacturing technologies utilizing an electric arc offer a great potential in generating large volume metal components. However, the selection of process parameters that yield the desired near net shape design as well as the requested mechanical component behavior is not a trivial task due to the complex relationship. Exemplarily for additive manufacturing of high-strength precipitation hardening AlMgSi-aluminum alloy this paper shows the application of a newly developed matching solid welding wire doped with TiB as grain refiner. The correlation between process parameters and component quality is examined analyzing the size and distribution of pores as well as the grain morphology. Furthermore, the influences of different post-weld heat treatments are evaluated to meet the reference mechanical properties of the corresponding wrought material. Finally, the digital integration of the entire additive manufacturing chain enables an overall traceability of the relevant process steps which is the basis for a reliable subsequent quality assessment.
This study examines the relationship between the magnetic mesostructure with the microstructure of low carbon steel tungsten inert gas welds. Optical microscopy revealed variation in the microstructure of the parent material, in the heat affected and fusion zones, correlating with distinctive changes in the local magnetic stray fields measured with high spatial resolution giant magneto resistance sensors. In the vicinity of the heat affected zone high residual stresses were found using neutron diffraction.
Notably, the gradients of von Mises stress and triaxial magnetic stray field modulus follow the same tendency transverse to the weld. In contrast, micro-X-ray fluorescence characterization indicated that local changes in element composition had no independent effect on magnetic stray fields.