Friction stir welding characteristics of 6061-T6 aluminum alloy sheet
来源期刊：中国有色金属学报(英文版)2005年第z2期
论文作者：刘会杰 陈迎春 冯吉才
文章页码：43 - 46
Key words：aluminum alloy； friction stir welding； tensile property； fracture location； welding parameter
Abstract: A 3mm-thick 6061-T6 aluminum alloy sheet was friction stir welded in order to examine its friction stir welding (FSW) characteristics. The experimental results indicate that the FSW clearly softens the aluminum alloy sheet, thus the tensile properties of the joints are lower than those of the base material, and the ultimate strength efficiency of the joints is only up to 66%. The FSW parameters significantly affect the tensile properties of the joints, and the range of the welding parameters that can be used to form a good joint is relatively narrow. All the FSW joints fracture on the retreating side of the weld center. When the revolutionary pitch is smaller than a certain critical value, the fracture locations are distant from the weld center. Otherwise, the fracture almost occurs in the weld center.
