TY - CONF A1 - Kannengießer, Thomas T1 - Einfluss der Wäremführung auf die Spannungsausbildung beim Schweißen hochfester Stähle unter definierten Einspannbedingungen T2 - FOSTA - Forschungsvereinigung Stahlanwendung e. V., ZMB - Zentrum Metallische Bauweisen CY - Aachen, Germany DA - 2010-04-29 PY - 2010 AN - OPUS4-21501 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kannengießer, Thomas T1 - Synchrotron Diffraction for In-situ Characterizations of Materials Behaviour T2 - 3 rd IURS (Inter-University Research symposium) Advances in Welding and Joining CY - Busan, South Korea DA - 2010-05-14 PY - 2010 AN - OPUS4-21331 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Kromm, Arne A1 - Kannengießer, Thomas T1 - In situ phase characterization of low transformation temperature (LTT) alloy by means of synchrotron diffraction N2 - Cold cracking resistance is a relevant evaluation criterion for welded joints and affected by residual stresses which result from the welding procedure. Compressive residual stresses can thereby have a positive influence on preventing cracking. A unique possibility of generating compressive residual stresses already during the welding procedure is offered by the socalled Low Transformation Temperature (LTT) filler wires. Compared to conventional wires, these materials show decreased phase transformation temperatures which can work against the cooling-specific contraction. In consequence, distinct compressive residual stresses can be observed within the weld and adjacent areas. The strength of these fillers makes them potentially applicable to high-strength steel welding. Investigations were carried out to determine the phase transformation behaviour of different LTT-filler materials. Transformation temperatures were identified using Single Sensor Differential Thermal Analysis (SS-DTA). Additionally Synchrotron radiation was used to measure the transformation kinetics of all involved crystalline phases during heating and cooling of a simulated weld thermal cycle. KW - In-situ phase analysis KW - Energy dispersive diffraction KW - Phase transformation PY - 2010 SN - 1684-579X VL - 5 IS - 158 SP - 17 EP - 23 PB - Izdat. Masinostroenie CY - Moskva, Russia AN - OPUS4-21829 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kannengießer, Thomas T1 - The use of synchrotron radiation for materials research in welding T2 - 2nd WMRIF (World Materials Research Institutes Forum) CY - Berlin, Germany DA - 2010-09-02 PY - 2010 AN - OPUS4-21917 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Lorenz, Stephan A1 - Kannengießer, Thomas A1 - Herold, H. A1 - Posch, G. T1 - Suitability of high alloyed wire electrodes for the positional laser-GMA-hybrid welding N2 - Laser-gas metal arc (GMA)-hybrid welding enables a high deposition rate and a stable welding process. Process stability was found to be profoundly dependent on the type of the applied filler wire (solid or tubular cored). Whereas solid wires are deposited in pulsed arc mode, tubular cored wire electrodes are weldable by a stable spray-arc process within a wide operating range. This fact applies above all to a high alloyed metal cored wire electrode, of which the achievable deposition rates exceed the upper limits recommended by the manufacturer. A further interesting aspect is the application of a rutile tubular cored wire for positional laser-GMA-hybrid welding. A modern 20 kW-fibre laser source was available for the experiments. This study is concerned with the weldability of high alloyed tubular cored electrodes for high power laser-GMA-hybrid welding. Results obtained from comparative investigations between tubular cored and solid wire electrodes relating to process stability are summarised. KW - Austenitic stainless steel KW - Flux cored wire electrodes KW - Solid wire electrodes KW - Laser hybrid welding KW - Stainless steel KW - Laser welding KW - Welding speed KW - Welding position KW - Fibre laser KW - Process stability KW - Vertical position down KW - Charpy V-notch impact test KW - GMA welding KW - Gas metal arc welding KW - Weldability PY - 2010 DO - https://doi.org/10.1504/IJMMP.2010.035943 SN - 1741-8410 SN - 1741-8429 VL - 5 IS - 2/3 SP - 245 EP - 260 PB - Inderscience Enterprises Ltd CY - Genève, Switzerland AN - OPUS4-22270 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kannengießer, Thomas A1 - Kromm, Arne T1 - In-situ studiesof phase transformation and residual stress build up in martensitic materials using synchrotron radiation T2 - 2nd IURS - Inter-university research symposium CY - Canmore, Alberta, Canada DA - 2009-05-20 KW - In-situ diffraction KW - Phase transformation KW - LTT alloy KW - Residual stress PY - 2009 IS - Paper 12 SP - 1 EP - 5 AN - OPUS4-22499 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Kannengießer, Thomas A1 - Tiersch, Nico T1 - Comparative study between hot extraction methods and mercury method - a national round robin test KW - Hot extraction KW - Hydrogen KW - ISO 3690 KW - Measurement KW - Mercury KW - Round robin test PY - 2010 SN - 0043-2318 VL - 56 IS - 7 SP - 20 EP - 26 PB - Welding Research Council CY - New York, NY AN - OPUS4-22480 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kannengießer, Thomas A1 - Kromm, Arne A1 - Brauser, Stephan T1 - Synchrotron diffraction for visualization of solid state phase transformations T2 - VISUAL-JW 2010 - The international symposium on visualization in joining & welding science through advanced measurements and simulation CY - Osaka, Japan DA - 2010-11-11 KW - Synchrotron KW - EDXRD KW - Martensite KW - Residual stress KW - TRIP steel KW - Phase transformation PY - 2010 IS - MTJW-1 SP - 123 EP - 124 AN - OPUS4-22653 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kannengießer, Thomas T1 - Synchrotron Diffraction for Visualization of Solid State Phase Transformations T2 - VISUAL - The International Symposium on Visualization in Joining & Welding Science Through Advanced Measurements and Simulation CY - Osaka, Japan DA - 2010-11-22 PY - 2010 AN - OPUS4-22746 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Brauser, Stephan A1 - Kannengießer, Thomas T1 - Hydrogen absorption and diffusion in different welded duplex steels N2 - In this study, hydrogen absorption and diffusion were investigated for various high-alloyed ferritic-austenitic duplex steels. On account of the specific transformation and solidification behaviour, respectively, of duplex steels as compared to single-phase ferritic and austenitic steels, special conditions have to be considered concerning hydrogen absorption which may ultimately lead to microstructure-dependent hydrogen-assisted weld metal cracking. Hydrogen absorption during welding may occur via the shielding gas, moisture from the surroundings or via the welding filler material. As a contribution to the interpretation and prediction of hydrogen-induced cracking in welded duplex steels, the actual hydrogen absorption via the arc as well as the weld metal hydrogen diffusion was investigated for the first time in a duplex steel DS (1.4462), a super duplex steel SDS (1.4501) and in a lean duplex steel LDS (1.4162). Isothermal heat treatment using carrier gas hot extraction enabled quantification of the amounts of hydrogen trapped in the respective microstructure areas. The hydrogen diffusion coefficients were determined by analytical and numerical calculation. The total hydrogen concentrations and the diffusion coefficients were found to be nearly identical. Trapped hydrogen was however observed to be dependent on the material and on the microstructure condition. The influence of hydrogen on the mechano-technological properties of the weld metal was characterized with the help of tensile tests. In addition, the hydrogen embrittlement effect was detected in scanning electron microscopic analyses. KW - Absorption KW - Diffusion KW - Embrittlement KW - Duplex stainless steels KW - Hydrogen PY - 2011 SN - 0043-2288 SN - 1878-6669 VL - 55 IS - 5-6 SP - 26 EP - 36 PB - Springer CY - Oxford AN - OPUS4-23721 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Lorenz, Stephan A1 - Kannengießer, Thomas A1 - Posch, G. T1 - Eignung hochlegierter Fülldrahtelektroden zum Laserstrahl-MSG-Hybridschweißen N2 - Gegenstand dieses Forschungsprojekts waren Untersuchungen zur Qualifikation von Fülldrahtelektroden für das Laserstrahl-MSG-Hybridschweißen hochlegierter Stähle. Dieser Typ Drahtelektrode ermöglicht aufgrund seines ringförmigen Metallmantels und der pulverartigen Füllung insbesondere im oberen Bereich der erzielbaren Abschmelzleistungen einen stabilen, spritzerarmen Werkstoffübergang vergleichbar dem im Sprühlichtbogen. Im Gegensatz dazu wird beim Abschmelzen von Massivdrahtelektroden ein kontrollierter Werkstoffübergang durch die Impulslichtbogentechnik erreicht. Die Werkstoff- und prozessspezifischen Eigenschaften beim Schweißen dieser Zusatzwerkstoffe haben einen signifikanten Einfluss auf die Schweißnahtmetallurgie sowie die Prozessstabilität. Zur Untersuchung der Übertragbarkeit der erzielbaren Werkstoffeigenschaften vom MSG-Schweißen auf das Laserstrahl-MSG-Hybridschweißen wurden Versuche am hochlegierten Grundwerkstoff AISI403L (X2CrNil911) durchgeführt. Als Zusatzwerkstoffe gemäß DIN EN 12 072 und DIN EN ISO 17 633 kamen vier Drahtelektroden, ein eigens für das Positionsschweißen konzipierter Rutilfülldraht 19 9 L P M1, ein zum Schweißen in Wannenposition geeigneter Rutilfülldraht T 19 9 L R M (C) 3, ein Metallpulverfülldraht T199LMM1 sowie ein Massivdraht G19 9 L Si zum Einsatz. KW - Fülldrahtelektroden KW - Laserstrahlschweißen KW - Metall-Schutzgasschweißen KW - Hybridschweißen KW - Werkstofffragen KW - Zusatzwerkstoffe PY - 2011 SN - 0036-7184 VL - 63 IS - 5 SP - 222 EP - 228 PB - Verl. für Schweißen u. Verwandte Verfahren, DVS-Verl. CY - Düsseldorf AN - OPUS4-23850 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kannengießer, Thomas T1 - Wasserstoffanalytik und Degradation von Werkstoffeigenschaften von hochfesten Feinkornbaustählen T2 - Werkstofftechnisches Kolloquium CY - Graz, Austria DA - 2011-05-06 PY - 2011 AN - OPUS4-23659 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Kannengießer, Thomas A1 - Wolf, Martin A1 - Schobbert, Helmut T1 - Recent developments in nickel base material welding considering the influence of shielding gas on the hot cracking resistance T2 - Stainless Steel World America 2004 Conference & Expo CY - Houston, TX, USA DA - 2004-10-20 KW - Nickel base material KW - Welding KW - Shielding gas KW - Hot cracking resistance PY - 2004 SN - 90-73168-23-6 SP - 156 EP - 167 PB - KCI Publ. BV CY - Zutphen AN - OPUS4-4581 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kannengießer, Thomas T1 - Zerstörende Prüfung von Schweißnähten nach der europäischen Normung T2 - DVS Sondertagung: Sicherung der Güte von Schweißverbindungen CY - Hanover, Germany DA - 2003-05-16 PY - 2003 AN - OPUS4-3996 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kannengießer, Thomas T1 - Methode for taking samples for delta ferrite measurment (EN ISO 17655) T2 - IIW-Intermediale Meeting CII/CIX CY - Vienna, Austria DA - 2003-03-03 PY - 2003 AN - OPUS4-3995 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kannengießer, Thomas T1 - Metastable Primary Solidification Modes in the Fe-Cr-Ni System During Laser Welding T2 - Euromat 2003 CY - Lausanne, Switzerland DA - 2003-09-03 PY - 2003 AN - OPUS4-3998 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kannengießer, Thomas T1 - Investigations of cold cracking by the CTS-Test at various conditions T2 - IIW Annual Assembly 2003 CY - Bucharest, Romania DA - 2003-07-10 PY - 2003 AN - OPUS4-3997 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kannengießer, Thomas T1 - To the revision of ISO 3690 regarding the acceptance of the carrier gas hot extraction method T2 - IIW Meeting C-II 2004 CY - Houston, TX, USA DA - 2004-10-18 PY - 2004 AN - OPUS4-5244 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kannengießer, Thomas T1 - Zerstörendes und zerstörungsfreies Prüfen von Schweißverbindungen nach DIN-EN-Normen - Überblick und Anwendungsbeispiele T2 - 2. Gemeinschaftstagung DIN, DVS SLV CY - Berlin, Germany DA - 2006-05-16 PY - 2006 AN - OPUS4-12632 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kannengießer, Thomas A1 - Cross, Carl Edward T1 - Effect of tack placement on local weld displacement and solidification cracking during arc welding of aluminium alloy 6083 T2 - 1st South-east Asia International Institute of Welding Congress "Welding in South-East-Asia: A Challenge for the Future" CY - Bangkok, Thailand DA - 2006-11-21 KW - Heißriss KW - Aluminiumlegierung KW - Erstarrungsriss KW - Heften PY - 2006 SP - 480 EP - 491 (Paper No. 52) PB - Welding Institute of Thailand CY - Bangkok AN - OPUS4-14218 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -