预拉伸变形对欠时效7N01铝合金板材疲劳断裂的影响
田妮, 石旭, 刘威, 刘春城, 赵刚, 左良

Effect of Pre-Tension on the Fatigue Fracture of Under-Aged 7N01 Aluminum Alloy Plate
TIAN Ni, SHI Xu, LIU Wei, LIU Chuncheng, ZHAO Gang, ZUO Liang
图8 欠时效态7N01铝合金板材经不同程度预拉伸变形后的疲劳断口表面裂纹扩展区形貌的SEM像
Fig.8 SEM images of fatigue crack propagation of under-aged 7N01 aluminum alloy plate after different pre-tensile deformations
(a) undeformed (b) 3% (c) 5% (d) 8% (e) 16% (f) 20%