预变形对超高强Al-Zn-Mg-Cu合金时效组织与力学性能的影响

韩宝帅, 魏立军, 徐严谨, 马晓光, 刘雅菲, 侯红亮

Effect of Pre-Deformation on Microstructure and Mechanical Properties of Ultra-High Strength Al-Zn-Mg-Cu Alloy After Ageing Treatment

HAN Baoshuai, WEI Lijun, XU Yanjin, MA Xiaoguang, LIU Yafei, HOU Hongliang

表2 不同时效状态下超高强Al-Zn-Mg-Cu合金的力学性能

Table 2 Mechanical properties of ultra-high strength Al-Zn-Mg-Cu alloys under different ageing process parameters

Ageing process parameter Ultimate strength / MPa Yield strength / MPa Elongation / % 12+8 796±5 772±7 9.77±0.51 3%+12+8 813±4 786±4 10.10±0.77 4%+12+8 807±3 781±5 10.63±0.74 12+10 803±2 770±8 9.57±0.66