Welding of copper and aluminium has been problematic with tradition fusion method. The friction stir welding (FSW) was employed to butt weld the T2 copper and 1061 aluminium alloy plates. The welding parameters were planned by the orthogonal experiment design method. The samples obtained in experiments were investigated in the aspects of microstructure, tensile strength, fatigue performance and micro-hardness. Sound weld with the best tensile strength and fatigue life was produced under the welding parameters of rotation speed, 1100 rpm and welding speed 50 mm min−1. The tensile strength was 193.16 MPa, 85% of the base aluminium material. Three intermetallic compounds of CuAl, Cu3Al and Cu9Al4 were detected at the copper–aluminium interface in X-ray diffraction analysis.

中文翻译：

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T2铜与AA 1061 FSWed接头的显微组织和力学性能

铜和铝的焊接一直存在传统熔合方法的问题。采用搅拌摩擦焊（FSW）对T2铜板和1061铝合金板进行对接焊。采用正交试验设计方法规划焊接参数。对实验中得到的试样从显微组织、抗拉强度、疲劳性能和显微硬度等方面进行了研究。在转速为 1100 rpm 和焊接速度为 50 mm min-1 的焊接参数下，产生了具有最佳抗拉强度和疲劳寿命的良好焊缝。抗拉强度为 193.16 MPa，为基体铝材的 85%。在 X 射线衍射分析中，在铜-铝界面处检测到 CuAl、Cu3Al 和 Cu9Al4 三种金属间化合物。