Microstructure and mechanical properties of refill friction stir spot welded dissimilar 7075/6061 aluminum alloys

申志康, 杨新岐, 张照华, 等. 铝合金回填式搅拌摩擦点焊组织及力学性能分析[J]. 焊接学报， 2013, 34(6): 73-76.Shen Zhikang, Yang Xinqi, Zhang Zhaohua,et al. Analysis of microstructure and mechanical properties of refill friction stir spot welded aluminum alloy[J]. Transactions of the China Welding Institution， 2013, 34(6): 73-76.[2] Li Z, Ji S, Ma Y,et al. Fracture mechanism of refill friction stir spot welded 2024-T4 aluminum alloy[J]. International Journal of Advanced Manufacturing Technology， 2016, 86(5): 1925-1932.[3] 李政玮. 铝合金RFSSW的材料流动规律及力学性能研究[D]. 沈阳： 沈阳航空航天大学， 2014.[4] Suhuddin U F H, Fischer V, Dos Santos J F. The thermal cycle during the dissimilar friction spot welding of aluminum and magnesium alloy[J]. Scripta Materialia, 2013, 68: 87-90.[5] 朱小刚, 王联凤, 乔凤斌, 等. 6061-T6铝合金回填式搅拌摩擦点焊疲劳性能分析[J]. 焊接学报， 2014, 35(4): 91-94.Zhu Xiaogang， Wang Lianfeng， Qiao Fengbin,et al. Fatigue failure analysis of 6061-T6 aluminum alloy refilled friction stir spot welding[J]. Transactions of the China Welding Institution， 2014, 35(4): 91-94.[6] Li Z, Gao S, Ji S,et al. Effect of rotational speed on microstructure and mechanical properties of refill friction stir spot welded 2024 Al alloy[J]. Journal of Materials Engineering and Performance， 2016, 25(4): 1673-1682.[7] 岳玉梅, 李政玮, 马轶男, 等. 下扎深度对回填式搅拌摩擦点焊接头断裂行为的影响[J]. 西安交通大学学报， 2015, 49(8): 122-127.Yue Yumei, Li Zhengwei, Ma Yinan,et al. Effect of plunge depth on fracture behavior of refill friction stir spot welding[J]. Journal of Xi’an Jiaotong University, 2015, 49(8): 122-127.[8] Zhao Y Q, Liu H J, Chen S X,et al. Effects of sleeve plunge depth on microstructures and mechanical properties of friction spot welded alclad 7B04-T74 aluminum alloy[J]. Materials & Design, 2014, 62: 40-46.[9] Yin Y H, Sun N, North T H,et al. Hook formation and mechanical properties in AZ31 friction stir spot welds[J]. Journal of Materials Processing Technology， 2010, 210: 2062-2070.