摘要
以6A60铝合金板材为研究对象,通过研究特殊热处理过程来改善6A60铝合金的耐蚀性能。6A60铝合金在三级时效制度下(140℃/6h+180℃/5h+140℃/4h,140℃/6h+200℃/2.5h+140℃/12h)已经消除了6A60合金的晶间腐蚀倾向,仅有轻度点蚀产生,剥落腐蚀性能为 EA,合金的力学性能达到 405MPa,延伸率达到 12％以上。
6A60 is a new type of Al-Mg-Si-Cu system deformed aluminum alloy and it is heat-treatable. The corrosion resistance of 6A60 alloy is improved by special process of heat treatment. With the three-step aging (140℃/6h+ 180℃/5h+ 140℃/4h, 140℃/ 6h + 200℃ /2. 5h + 140℃ /12h) , the preferred properties can be obtained. The intergranular corrosion tendency of this alloy was eliminated, The pit corrosion is slight. The result of exfoliation corrosion is EA. , the tensile strength is 405MPa, and elongation is over 12% .
出处
《航空材料学报》
EI
CAS
CSCD
2003年第z1期78-82,共5页
Journal of Aeronautical Materials
关键词
6A60铝合金
热处理
三级时效
晶间腐蚀
剥落腐蚀
6A60 aluminum alloy
heat-treatable
three-step aging
intergranular corrosion
exfoliation corrosion
