高温处理对7175铝合金锻件抗应力腐蚀性能的影响  

Effect of High Temperature Treatment on Property of Stress Corrosion Resistance of 7175 Aluminum Alloy Forging

作　　者：林高用[1] 张辉[1] 彭大暑[1] 宛亚坤[2] 

机构地区：[1]中南大学材料科学与工程系,长沙410083 [2]东北轻合金有限责任公司,哈尔滨150060

出　　处：《稀有金属》2001年第3期235-237,共3页Chinese Journal of Rare Metals

基　　金：国家重点基础研究发展规划项目! (973)资助 (G19990 6 490 0 8-5 )

摘　　要：研究了锻坯高温处理对 7175铝合金锻件抗应力腐蚀性能的影响 ,并对其影响机理进行了分析。高温处理可明显提高 7175铝合金锻件的抗应力腐蚀性能 ;含铬析出相及无析出带 (PFZ)的形成 ,是提高该合金抗应力腐蚀性能的根本原因。The effects of a kind of special high temperature treatment on stress corrosion resistance of 7175 aluminum alloy forgings were studied, and the mechanism of the effects was explained. The results show that this special heat treatment facilitates precipitating of the fine particles containing Cr element and forming of PFZ (Precipitate Free Zone), which obviously enhance the property of stress corrosion resistance of 7175 aluminum alloy forgings.

关 键 词：7175铝合金 高温处理 抗应力腐蚀 

分 类 号：TG174.4[金属学及工艺—金属表面处理]