腐蚀损伤对AA7075-T651铝合金疲劳行为影响的研究

翁硕, 俞俊, 赵礼辉, 冯金芝, 郑松林

Effect of Corrosion Damage on Fatigue Behavior of AA7075-T651 Al-alloy

WENG Shuo, YU Jun, ZHAO Lihui, FENG Jinzhi, ZHENG Songlin

表2 腐蚀坑几何尺寸参数

Table 2 Corrosion pit geometrical dimension parameters

Stress / MPa d / μm c / μm Kf 200 550 404.16 2.61 200 346.67 293.33 2.54 200 585 405 2.24 200 1200 741.17 2.67 250 507.41 174.07 2.93 250 462.5 437.5 2.48 350 448.15 288.89 2.68 350 488.89 340.74 2.64 350 644.17 184.05 2.98 350 116.67 50 2.83