TY - JOUR A1 - Kasten, C. A1 - Carl, G. A1 - Mehner, Hartmut A1 - Menzel, Michael A1 - Rüssel, C. T1 - Polyvalent Ions - Their Behaviour in the Glass Melt and their Influence on Glass Crystallisation JF - Molten salt forum KW - Polyvalent Ions KW - Redox State KW - Mössbauer Spectroscopy KW - Glass Crystallisation KW - Microstructure PY - 1998 SN - 1021-6138 VL - 5-6 SP - 555 EP - 558 PB - Trans Tech Publ. CY - Aedermannsdorf AN - OPUS4-6931 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Eliezer, Dan A1 - Hamu, G.B. A1 - Cross, Carl Edward A1 - Böllinghaus, Thomas ED - Galloway, T. T1 - Effect of grain refinement on the strength and corrosion of AZ31 magnesium alloy following severe plastic deformation T2 - Light metals 2006 N2 - Gas tungsten arc welds made on wrought magnesium AZ31 plate have been characterized for corrosion in saline solution (3.5% NaCl). Microstructural changes induced by the welding process resulted in different environmental behaviour of each zone (BM-base metal, HAZ-heat affected zone and FZ-fusion zone). The faster kinetics of corrosion in FZ and especially HAZ are attributed to (a) the coarse microstructure, consisting of large grains, and (b) very small amounts of ß-phase in the grain boundaries. Also, hardness traverses have shown that these zones are weaker than the base metal. Based on the significant effect of grain size on strength in magnesium alloys, the weld metal grains have been systematically refined using controlled oscillation during welding, and by adding a grain refiner to the weld pool. Detailed microstructure analyses have been carried out and the relationships between corrosion behaviour, mechanical properties and microstructure (grain refinement and second-phases formation) are highlighted. T2 - 135th Annual Meeting of the Minerals, Metals & Materials Society CY - San Antonio, TX, USA DA - 2006-03-12 PY - 2006 SN - 978-0-87339-619-6 VL - 135 SP - 1 EP - 4 PB - TMS, the Minerals, Metals & Materials Society CY - Warrendale AN - OPUS4-14452 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 - Proceedings of the 2nd International Conference on Magnesium (ICM-2006) 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 - 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 - Manuscripts 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 - 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 JF - Materials science and engineering A 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 - GEN A1 - Cross, Carl Edward A1 - Ben-Hamu, G. A1 - Eliezer, D. A1 - Xu, Ping ED - Kainer, K. U. T1 - Corrosion-fatigue of AZ31 wrought Magnesium weldments T2 - Magnesium - 7th International conference on magnesium alloys and their applications, November 6-9, 2006, Dresden, Germany (Proceedings) T2 - 7th International conference on magnesium alloys and their applications CY - Dresden, Germany DA - 2006-09-06 KW - AZ31 Magnesium Alloy KW - Arc Weld KW - Corrosion Fatigue KW - Salt Water PY - 2008 SN - 978-3-527-31764-6 SP - 727 EP - 733 PB - Wiley-VCH AN - OPUS4-18313 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Mousavi, M.G. A1 - Cross, Carl Edward A1 - Grong, O. T1 - The effect of high-temperature eutectic-forming impurities on aluminium 7108 weldability JF - Welding journal KW - 7108 aluminium KW - Iron impurity KW - Weldability KW - High temperature eutectic KW - Sc, Mn, Fe, Co, and Ni KW - Alloy 7108 KW - Eutectic KW - Interdendritic fluid flow KW - Grain size KW - Circular patch test (CPT) PY - 2009 SN - 0043-2296 SN - 0096-7629 VL - 88 SP - 104-s - 110-s PB - American Welding Society CY - New York, NY AN - OPUS4-20626 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Cross, Carl Edward A1 - Coniglio, Nicolas A1 - Schempp, Philipp A1 - Mousavi, M.G. ED - Lippold, J. ED - Böllinghaus, T. ED - Cross, C.E. ED - et al., T1 - Critical conditions for weld solidification crack growth T2 - Hot cracking phenomena in welds III N2 - The occurrence of solidification cracking during welding remains a little understood phenomenon, in spite of extensive studies and tests performed to evaluate and compare the relative weldability of many different alloys. From an approach often adopted in the welding community attributed to Prokhorov, solidification cracks are believed to form when a critical tensile strain is exceeded, specific to the alloy, assuming that the mushy-zone has limited ductility. Tensile stresses and strains normally form behind a moving weld pool as a result of solidification shrinkage and thermal contraction, as influenced by welding parameters and the degree of restraint. KW - Solidification cracking KW - Aluminium alloy KW - Crack growth KW - Strain rate model PY - 2011 SN - 978-3-642-16863-5 DO - https://doi.org/10.1007/978-3-642-16864-2_2 IS - Part 2 SP - 25 EP - 41 PB - Springer CY - Berlin, Heidelberg AN - OPUS4-23846 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -