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
), 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
), YU Jun1, ZHAO Lihui1,2,3, FENG Jinzhi1,2,3, ZHENG Songlin1,2,3
图7. 预腐蚀150和500 h试样在疲劳失效后的断口形貌
Fig.7. Fracture morphology of 150 h (a~d) and 500 h (e~h) pre-etched sample: (a) macroscopic fracture morphology; (b) T-S surface crack initiation zone; (c) crack propagation zone; (d) ductile fracture zone, (e) macroscopic fracture morphology; (f) corrosion pit initiation zone; (g) fatigue striations; (h) ductile fracture zone
