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Mechanical Properties of Joints according to Welding Methods and Sensitivity Analysis of FSW's Welding Variables for A6005 Extruded Alloy of Rolling Stock  

Kim, Weon-Kyong (한국철도기술연구원)
Won, Si-Tae (서울산업대학교 금형설계학과)
Goo, Byeong-Choon (한국철도기술연구원)
Publication Information
Journal of the Korean Society for Railway / v.13, no.2, 2010 , pp. 131-138 More about this Journal
Abstract
Recently, extruded aluminium-alloy panels have been used in the car bodies in order to meet the needs for the speed-up and light-weight of the railway vehicles. Most of the car bodies were jointed by arc weldings, like GMAW (GasMetal Arc Welding) and GTAW (Gas Tungsten Arc Welding), but these weldings became fairly worse the mechanical properties of the junction than the base metal. Nowadays, FSW (Friction Stir Welding), which is superior to the arc weldings, has been applied in the railway vehicles. In this study, the mechanical properties of the joints in both FSW and GMAW for A6005 extruded aluminium-alloy sheets have discussed. In addition, the relationships between the welding conditions and the mechanical properties for the joint of FSW have analyzed through the sensitivity analysis. It can be concluded that the mechanical properties for the joint of FSW are better than those of GMAW and the welding speed is the most sensible welding condition in the process of FSW.
Keywords
FSW; Sensitivity analysis; Tensile strength; Hardness; Elongation;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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