摘要
通过力学性能测试、金相显微分析等方法,研究了热处理工艺对7075铝合金组织和力学性能及抗应力腐蚀性能的影响。结果表明在高温预析出固溶处理＋双级淬火＋（115依5）℃×（5~6）h＋（175依5）℃×（14~16）h双级时效后,7075铝合金的抗拉强度、屈服强度、伸长率分别达到了663、560 MPa、13.6%;应力腐蚀敏感性降低,抗应力腐蚀性能有较大程度提高。
The effects of heat treatment on the microstructure, mechanical properties and stress corrosion-resistance property of 7075 aluminium alloy were studied by mechanical properties test and metallographic microscopic analysis. The results show that, after the solid solution treatment of the pre-precipitation at high temperature ＋ double stages quenching＋ double stages aging of （115±5）℃ x（5-6） h ＋（175±5）℃ x（14-16） h, the tensile strength, yield strength and elongation of 7075 aluminum alloy are 663, 560 MPa and 13.6% respectively; stress corrosion sensitivity decreases, and the anti-stress corrosion performance has greater improvement.
出处
《热加工工艺》
CSCD
北大核心
2016年第12期203-206,209,共5页
Hot Working Technology
基金
郑州市教学团队"机械制造"资助项目(ZZLG201416)
河南省高等学校重点科研项目(15A430032)
郑州市科技创新团队资助项目(10CXTD159)
关键词
7075
铝合金
热处理工艺
力学性能
抗应力腐蚀性能
7075 aluminium alloy
heat treatment
mechanical properties
anti-stress corrosion performance
