TY - JOUR A1 - Ben-Hamu, G. A1 - Eliezer, D. A1 - Cross, Carl Edward A1 - Böllinghaus, Thomas T1 - The relation between microstructure and corrosion behavior of GTA welded AZ31B magnesium sheet N2 - Welding of AZ31B magnesium alloy was carried out using gas-tungsten arc (GTA) welding. The microstructure and the corrosion behavior of welded magnesium AZ31B alloy were investigated. ac and dc polarization tests were carried out on the welded Mg sheet. The microstructure was examined using optical and electron microscopy (TEM and SEM), X-ray analysis and EDS. Scanning Kelvin probe force microscopy (SKPFM) was used in order to measure the Volta potential of different phases relative to the matrix. The results showed that the GTA process effected both the microstructure and the corrosion behavior. These results can be explained by the effects of the process on microstructure of AZ31B Mg alloy sheet such as grain size and precipitates caused by the change in precipitation and recrystallization behavior. KW - AZ31B KW - GTA weld KW - Microstructure KW - Corrosion behavior KW - SKPFM KW - Intermetallics PY - 2007 DO - https://doi.org/10.1016/j.msea.2006.12.122 SN - 0921-5093 SN - 1873-4936 VL - 452/453 SP - 210 EP - 218 PB - Elsevier CY - Amsterdam AN - OPUS4-15459 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ben-Hamu, G. A1 - Eliezer, D. A1 - Cross, Carl Edward A1 - Böllinghaus, Thomas T1 - Volta potential of second phase particles in TIG welded AZ31 magnesium sheet T2 - EUROCORR 2006 CY - Maastricht, The Netherlands DA - 2006-09-25 KW - TIG welding KW - AZ31 Magnesium Alloy KW - Corrosion behavior PY - 2006 N1 - Serientitel: EFC-Event – Series title: EFC-Event IS - 280 SP - 1 EP - 10 PB - European Federation of Corrosion CY - Maastricht AN - OPUS4-22134 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Ben-Hamu, G. A1 - Eliezer, Dan A1 - Cross, Carl Edward A1 - Böllinghaus, Thomas T1 - Microstructure and Corrosion Resistance of TIG Welded AZ31B Magnesium Sheet T2 - 2nd International Conference on Magnesium CY - Beijing, China DA - 2006-06-25 KW - AZ31B KW - TIG welded KW - Microstructure KW - Corrosion behavior PY - 2006 VL - 2 IS - A-044 SP - 1 EP - 8 CY - Beijing AN - OPUS4-14486 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Böllinghaus, Thomas ED - Moody, N. T1 - Hydrogen assisted cracking of supermartensitic stainless steels T2 - International Conference on Hydrogen Effects on Material Behavior and Corrosion Deformation Interactions CY - Moran, WY, USA DA - 2002-09-22 PY - 2003 SN - 0-87339-501-8 SP - 1009 EP - 1018 PB - TMS CY - Warrendale, Pa. AN - OPUS4-15488 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Böllinghaus, Thomas T1 - Effect of Filler Material Selction on Stress Strain Build Up an Stress Corrosion Cracking of Welded SMSS Pipes T2 - IIW-Intermediale Meeting SC II-E, Institute Du Soudure CY - Paris, France DA - 2002-03-20 PY - 2002 AN - OPUS4-6326 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Böllinghaus, Thomas T1 - Kurzzeitmetallurgische Phänomene bei schnellen Umschmelzprozessen im System Fe-Cr-Ni in der Nähe fer eutektischen Rinne T2 - DFG-Kolloquium Kurzzeitmetallurgie CY - Bremen, Germany DA - 2002-09-11 PY - 2002 AN - OPUS4-6322 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Böllinghaus, Thomas T1 - Filler Material Selection for Orbital Supermatensitic Stainless Steel Pipeline Welds T2 - IIW-Intermediale Meeting SC II-E CY - Copenhagen, Denmark DA - 2002-06-27 PY - 2002 AN - OPUS4-6329 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Böllinghaus, Thomas T1 - Hydrogen Cracking of Supermartennsitic Stainless Steels T2 - 5th International Conference HCDI CY - Jackson, WY, USA DA - 2002-09-22 PY - 2002 AN - OPUS4-6332 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Böllinghaus, Thomas ED - Cerjak, H. T1 - Modelling of Hydrogen Diffusion and Cracking in Steel Welds N2 - Hydrogen assisted steel corrosion and cold cracking is still a major topic regarding the reliability of welded steel components, such as offshore platforms and pipelines. Measurement of local and crack critical hydrogen concentrations in a specific weld is difficult and not very precise. Numerical simulations of hydrogen uptake and diffusion developed within the last twenty years have to be regarded as much more effective to determine local hydrogen concentrations in crack critical regions of welds. As an overview of existing theories of the state of the art in modelling of hydrogen cracking in steels, the present contribution shows that the development of a comprehensive numerical model for both types of hydrogen assisted cracking in welds, hydrogen assisted stress corrosion cracking and cold cracking, is still a major research task. As a first step towards that direction, a basic procedure for numerical simulation of crack initiation and propagation has been developed and experimentally verified. The approach can be extended to a comprehensive quantitative model for life time prediction and risk based inspection of welded steel components. (Steel specimen used was S355 along with other materials such as AISI 321, Incoloy 800, Inconel 690 and 600.) T2 - Fifth International Seminar on the 'Numerical Analysis of Weldability' CY - Graz, Austria DA - 1999-09-01 PY - 2000 SN - 1-86125-115-7 N1 - Serientitel: Book / The Institute of Materials – Series title: Book / The Institute of Materials IS - 738 SP - 1019 EP - 1059 PB - IOM Communications CY - London AN - OPUS4-11841 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Böllinghaus, Thomas T1 - Safety of welded tubular components against hydrogen assisted cracking T2 - WMRIF Young scientists workshop CY - Tsukuba, Japan DA - 2008-07-22 PY - 2008 AN - OPUS4-23611 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -