腐蚀损伤对AA7075-T651铝合金疲劳行为影响的研究
翁硕1,2,3(), 俞俊1, 赵礼辉1,2,3, 冯金芝1,2,3, 郑松林1,2,3
Effect of Corrosion Damage on Fatigue Behavior of AA7075-T651 Al-alloy
WENG Shuo1,2,3(), YU Jun1, ZHAO Lihui1,2,3, FENG Jinzhi1,2,3, ZHENG Songlin1,2,3

图6. 裂纹萌生于T-L平面和从几何拐角处萌生的原始试样在疲劳失效后的断口形貌

Fig.6. Fracture morphology of the as-received sample crack initiating on the T-L plane (a~d) and at the geometric corner of the original sample (e~h): (a, e) macroscopic fracture morphology; (b, f) crack initiation zone with the direction on the T-L surface; (c, g) crack propagation zone; (d, h) ductile fracture zone