TY - GEN A1 - Kromm, Arne A1 - Kannengießer, Thomas ED - Borsutzki, M. T1 - Anwendung des neuen Controlled Tensile Weldability (CTW) Tests zur Untersuchung der Heißrissneigung T2 - Tagung Werkstoffprüfung 2006 CY - Bad Neuenahr, Deutschland DA - 2006-12-07 KW - Heißrisstest KW - 1.4565 KW - Heißrissneigung KW - Dehnung KW - Dehngeschwindigkeit KW - Heißriss KW - Erstarrungsriss KW - Konstruktiver Einfluss PY - 2006 SN - 3-514-00734-9 SP - 451 EP - 456 PB - Stahleisen CY - Düsseldorf AN - OPUS4-14362 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Kannengießer, Thomas T1 - IIW-Kommission II "Lichtbogenschweißen und Zusatzwerkstoffe" KW - Schweißen KW - IIW KW - Commission II PY - 2007 SN - 0036-7184 VL - 59 IS - 11 SP - 636 EP - 638 PB - Verl. für Schweißen u. Verwandte Verfahren, DVS-Verl. CY - Düsseldorf AN - OPUS4-14570 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Lorenz, Stephan A1 - Kannengießer, Thomas A1 - Herold, H. A1 - Posch, G. T1 - Laser-GMA-hybrid welding with high alloyed cored wire electrodes T2 - Stainless Steel World 2007 Conference CY - Maastricht, The Netherlands DA - 2007-11-06 KW - Laser-GMA-hybrid welding KW - Solid-state laser KW - Tubular cored wire electrodes KW - Solid wire electrodes KW - High alloyed steel AISI 304L KW - Welding metallurgy PY - 2007 SN - 9789073168282 IS - CD-ROM SP - 1 EP - 16 AN - OPUS4-16184 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kannengießer, Thomas T1 - Aktuelle Entwicklungstrends in der Fügetechnik T2 - Transferveranstaltung "Innovative Fügetechnologien", Schweißtechnische Lehr- und Versuchsanstalt, SLV Berlin-Brandenburg, NL der GSI mbH CY - Berlin, Germany DA - 2008-02-14 PY - 2008 AN - OPUS4-16646 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kannengießer, Thomas T1 - Influence of Arc Welding Process and of Stabilization Annealing on Welding Residual Stresses of Ni-Base Alloy KW - Ni-base alloy KW - Alloy 617 KW - Welding residual stresses KW - Hole drilling method PY - 2008 SP - 915 EP - 921 AN - OPUS4-16508 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kannengießer, Thomas T1 - Influence of arc welding process and of stabilization annealing on welding residual stresses on nickel base alloy T2 - IIW International Congress 2008 CY - Chennai, India DA - 2008-01-10 PY - 2008 AN - OPUS4-16513 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Lorenz, Stephan A1 - Kannengießer, Thomas A1 - Posch, G. ED - Karoly Jarmai, ED - Jozsef Farkas, T1 - Solid wire vs. flux cored wire - comparing investigations for GMA-laser-hybrid welding T2 - Design, Fabrication and Economy of Welded Structures - International Conference CY - Miskolc, Hungary DA - 2008-04-24 KW - Tubular cored electrode KW - Solid wire electrode KW - GMA-laser-hybrid welding KW - Structural optimization KW - Fatigue design KW - Frames KW - Hollow sections KW - Plated structures PY - 2008 SN - 978-1-904275-28-2 SP - 477 EP - 484 PB - Horwood Publishing Ltd. AN - OPUS4-17509 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Lorenz, Stephan A1 - Kannengießer, Thomas A1 - Herold, H. A1 - Posch, G. ED - P. Mayr, ED - G. Posch, ED - H. Cerjak, T1 - Aspects of positional laser-GMA-hybrid welding using high alloyed tubular cored wire electrodes T2 - 61st Annual Assembly and International Conference of the International Institute of Welding (IIW) "Safety and Reliability of Welded Components in Energy and Processing Industry" CY - Graz, Austria DA - 2008-07-06 KW - Laser-GMA-hybrid welding KW - Positional welding KW - Vertical position KW - Metal cored wire electrode KW - Rutile tubular cored wire KW - Solid wire PY - 2008 SN - 978-3-85125-019-0 SP - 479 EP - 484 PB - Verlag der Technischen Universität Graz CY - Graz, Austria AN - OPUS4-17800 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kannengießer, Thomas T1 - Formation of welding residual stresses in low transformation temperature (LTT) materials T2 - IIW International Congress, 2nd Latin American Welding Congress, XXXIV CONSOLDA-National Welding Congress CY - São Paulo, Brazil DA - 2008-05-18 PY - 2008 AN - OPUS4-17811 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kannengießer, Thomas T1 - Recent Developments in Nickel Base Material Welding Considering the Influence of Shielding Gas on the Hot Cracking Resistance N2 - Nickel base alloys are frequently applied in safety-relevant fields such as chemical plant construction or power plant engineering. Particularly on account of their cubic face-centered solidification characteristic, these materials are frequently susceptible to metallurgy-specific hot cracking during fusion welding. A classification of these materials according to their hot cracking resistance in the MVT-Test (Modified Varestraint Transvarestraint Test) is carried out by the example of a series of base and welding filler materials. Moreover, it has been proven by the MVT Test that the hot cracking resistance of nickel base alloy (Alloy 602 CA) can be improved by selecting appropriate shielding gases. T2 - Stainless Steel World America 2004, Conference CY - Houston, TX, USA DA - 2004-10-20 PY - 2004 AN - OPUS4-4479 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kannengießer, Thomas T1 - ND: YAG Plasma Powder Hybrid Welding (LPPAW) of Austenitic Stainless Steels T2 - Finnish-German-Japanese Joint International Conference - Mechanical and Metallurgical Approaches to New Joining Process CY - Awaji Island, Japan DA - 2004-07-21 PY - 2004 AN - OPUS4-4944 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kannengießer, Thomas T1 - Heißriss- und Kaltrissprüfverfahren - die neuen Normenreihen DIN EN ISO 17641 und DIN EN ISO 17642 in der praktischen Umsetzung T2 - Gemeinschaftstagung DIN, DVS, SLV CY - Berlin, Germany DA - 2004-05-05 PY - 2004 AN - OPUS4-4942 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kannengießer, Thomas T1 - Vertical-up and -down Laser Plasma Powder Hybrid Welding of a High Nitrogen Stainless Steel T2 - IIW Annual Assembly CY - Osaka, Japan DA - 2004-07-12 PY - 2004 AN - OPUS4-4943 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wolf, Martin A1 - Kannengießer, Thomas T1 - Moderne Prüfverfahren zur Bestimmung der Heißrisssicherheit beim Schweißen von hochlegierten Stählen und Nickelbasislegierungen / Modern test methods for assesing the hot crack resistance during welding of high-alloyed steels and nickel base alloys T2 - DVM-Tagung "Werkstoffprüfung 2005" CY - Berlin, Deutschland DA - 2005-12-01 KW - Heißrisse KW - Probenbeanspruchungsgeschwindigkeit KW - MVT-Test KW - Alloy 602 CA (Werkstoff-Nr.: 2.4633, NiCr25FeAlY) KW - Hot cracks KW - Test velocity KW - MVT-Test KW - Alloy 602 CA (material-No.: 2.4633, NiCr25FeAlY) PY - 2005 SN - 1861-8154 N1 - Serientitel: DVM-Bericht – Series title: DVM-Bericht IS - 641 SP - 419 EP - 426 PB - DVS-Verl. CY - Berlin AN - OPUS4-11726 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kannengießer, Thomas T1 - Moderne Prüfverfahren zur Heißrisssicherheit beim Schweißen hochlegierter Stähle und Nickelbasislegierungen T2 - 23. Vortrags- und Diskussionstagung "Werkstoffprüfung 2005", Herausforderungen neuer Werkstoffe an die Forschung und Werkstoffprüfung CY - Berlin, Germany DA - 2005-12-01 PY - 2005 AN - OPUS4-11699 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kromm, Arne A1 - Kannengießer, Thomas T1 - CT-02 In-situ-phase analysis using synchrotron radiation of low transformation temperature (LTT) welding material T2 - IIW International Congress, 2nd Latin American Welding Congress, XXXIV Consolda - National Welding Congress CY - Sao Paulo, Brazil DA - 2008-05-18 PY - 2008 SN - 85-8718210-2 SP - 1 EP - 12 AN - OPUS4-18591 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kannengießer, Thomas A1 - Kromm, Arne T1 - CT-01 Formation of welding residual stresses in low transformation temperature (LTT) materials T2 - IIW International Congress, 2nd Latin American Welding Congress, XXXIV Consolda - National Welding Congress CY - Sao Paulo, Brazil DA - 2008-05-18 PY - 2008 SN - 85-8718210-2 SP - 1 EP - 12 AN - OPUS4-18590 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Kromm, Arne A1 - Kannengießer, Thomas T1 - Characterizing phase transformations of different LTT alloys and their effect on residual stresses and cold cracking N2 - Novel martensitic filler materials with specially adjusted martensite start temperatures (Ms) can counteract the cooling specific shrinkage due to expansion effects of the weld metal associated with phase transformations. That can be exploited to create compressive residual stresses in the weld and adjacent areas, i.e. beneficial for increasing fatigue strength. The Ms-temperature is shifted via the chemical composition, mainly by the alloying elements nickel and chromium, resulting as well in different retained austenite contents. Investigations were made using different Low Transformation Temperature (LTT) alloys with varying nickel content. The resulting phase transformation temperatures were — for the first time — detected using high energy synchrotron diffraction and Single Sensor Differential Thermal Analysis (SS-DTA). Compared to angle dispersive diffraction, energy dispersive diffraction offers the possibility to measure residual stresses of the martensite and austenite phase parallel fast in one experiment up to depths of 100 μm. The residual stresses show significant distributions dependent on the Ms-temperature. The effect on the cold cracking behaviour of these alloys was investigated using the Tekken test. Results show that cold cracking can be avoided when appropriate contents of retained austenite are existent. KW - Austenite KW - Cold cracking KW - Martensite KW - Low KW - Temperature KW - Transformation PY - 2011 SN - 0043-2288 SN - 1878-6669 VL - 55 IS - 03/04 SP - 48 EP - 56 PB - Springer CY - Oxford AN - OPUS4-23402 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Beyer, Katrin A1 - Kannengießer, Thomas A1 - Griesche, Axel A1 - Schillinger, B. T1 - Study of hydrogen effusion in austenitic stainless steel by time-resolved in-situ measurements using neutron radiography N2 - The purpose of the present study was to show the feasibility of measuring hydrogen effusion in austenitic stainless steel (1.4301) using neutron radiography at the facility ANTARES of the research reactor FRM II of the Technische Universität München. This method is appropriate to measure in-situ hydrogen effusion for hydrogen concentrations as small as 20 ppmH. Experiments were carried out in the temperature range from room temperature up to 533 K. The measurement principle is based on the parallel comparison of electrochemically hydrogen charged specimen with hydrogen-free reference specimen at the same temperature. This allows the determination of the hydrogen concentration in the specimens as a function of time and temperature. Separate hot carrier gas extraction experiments using the same temperature–time profiles as the radiography experiments have been used to calibrate the grey values of the neutron transmission images into hydrogen concentrations. It can be stated that the hydrogen effusion correlates with the specimen temperature. KW - Hydrogen effusion KW - Austenitic stainless steels KW - Neutron radiography PY - 2011 DO - https://doi.org/10.1016/j.nima.2011.02.010 SN - 0168-9002 SN - 0167-5087 VL - 651 IS - 1 SP - 211 EP - 215 PB - North-Holland CY - Amsterdam AN - OPUS4-23401 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Altenkirch, J. A1 - Gibmeier, J. A1 - Kostov, V. A1 - Kromm, Arne A1 - Kannengießer, Thomas A1 - Doyle, S. A1 - Wanner, A. T1 - Time- and temperature-resolved synchrotron X-ray diffraction: observation of phase transformation and strain evolution in novel low temperature transformation weld filler materials N2 - Solid-state phase transformations and the evolution of thermal and elastic strains in novel low temperature transformation (LTT) weld filler materials in the near surface region are monitored in real time by means of an innovative experimental set-up at the PDIFF (powder diffraction) beamline at the synchrotron light source ANKA (Angströmquelle Karlsruhe) at the KIT (Karlsruhe Institute for Technology). The key components of the diffraction set-up are two fast microstrip line detectors, which enables the strain evolution to be followed as a function of time and temperature for a 0.5?s counting time. During controlled heating and cooling cycles, as well as during near welding cycles, the martensite–austenite–martensite phase transitions are analysed. The transformation kinetics are monitored during resistance heating of small chips of the pure LTT alloys and during gas tungsten arc welding of simplified LTT welds using a specially designed welding rig for in-situ studies on the diffraction instruments. Under the mechanically unconstrained condition allowing free thermal expansion and shrinkage, the LTT alloys are found to exhibit decreasing transformation temperatures Ac and MS and increasing phase fraction of retained austenite for increasing Ni content. The strain evolution during welding reveals increased compressive stresses upon welding, which is attributed to the martensite formation upon cooling, which counteracts the thermal contraction strains. Comparison of the transformation temperatures reveals higher values than in the pure LTT alloys, but no variation between the different alloys. On the one hand, this is attributed to preferred grain orientation affecting the diffraction measurements and the determination of the transformation temperatures. On the other hand, it is possible that with the different chemical compositions of the LTT alloys and the mechanical constraints during welding, the evolution of the residual strain and stress may vary and result in counteracting affects with respect to lowered martensite start temperatures. KW - In-situ synchrotron X-ray diffraction KW - Low temperature transformation KW - Welding PY - 2011 DO - https://doi.org/10.1177/0309324711413190 SN - 0309-3247 SN - 2041-3130 VL - 46 IS - 7 SP - 563 EP - 579 PB - Sage CY - London AN - OPUS4-24683 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kannengießer, Thomas T1 - Influence of Heat Control on Welding Residual Stresses in Multi-layer Component Joints T2 - IIW Intermediate Meeting Commission IX CY - The Abingtons, England DA - 2012-03-22 PY - 2012 AN - OPUS4-25774 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Griesche, Axel A1 - Beyer, Katrin A1 - Kannengießer, Thomas A1 - Calzada, E. T1 - Hydrogen diffusion measurements in steels using neutron imaging N2 - Revealing hydrogen embrittlement mechanisms in steels is of great interest to scientists and engineers. Neutron radiography makes it possible to measure in-situ hydrogen diffusion with high spatial and temporal resolution at concentrations as low as 20 ppm. We compare hydrogen-charged specimens with hydrogen-free reference specimens and use calibration standards to normalize the hydrogen concentrations. This allows quantitative tracking of the hydrogen concentration evolution as a function of time, space and temperature. Furthermore, a view into the material with 'neutron eyes' facilitates the detection of cavities that contain molecular hydrogen. KW - Hydrogen KW - Diffusion KW - Steel KW - Neutron radiography PY - 2012 UR - http://cdn.frm2.tum.de/fileadmin/stuff/information/documents/annualReports/Annual_Report_2011_online_version.pdf SP - 50 EP - 51 AN - OPUS4-25981 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -