6005A铝合金挤压型材搅拌摩擦焊接头的疲劳性能

任延静, 张欣盟, 薛鹏, 倪丁瑞, 肖伯律, 马宗义

Fatigue Property of Friction Stir Welded 6005A Al Alloy Profiles

REN Yanjing, ZHANG Xinmeng, XUE Peng, NI Dingrui, XIAO Bolv, MA Zongyi

图6 焊前未机械打磨FSW接头在应力幅为180 MPa时典型断口的形貌

Fig.6 Typical appearance of fracture of FSW joint unpolished before welding tested at a high stress amplitude of 180 MPa (a) macrostructure, (b) crack source zone, (c) propagation zone, (d) final fracture zone