新型热处理调控Al-Cu-Mg合金残余应力的工艺和机理

马文静,陈志国,李鸿娟,袁珍贵,郑子樵

Process and Mechanism of Novel Heat Treatment for Controlling Residual Stress in Al-Cu-Mg Alloy

Wenjing MA,Zhiguo CHEN,Hongjuan LI,Zhengui YUAN,Ziqiao ZHENG

表3 不同状态下合金的拉伸力学性能

Table 3 Tensile mechanical properties of alloy under different conditions

sample name σ0.2/MPa σb/MPa δ/% ST 158 305 19.2% T6 246.6 367.3 16.5% T8(1.5%) 414.5 452 10.2% T8(3%) 439.6 472.5 9% PU(1.5/200) 370.8 409.4 13% PU(3/150) 463.6 502.5 12.7% PU(3/200) 354.8 391.2 13.4%