7B50铝合金三种时效状态的导电率和力学性能

Electrical conductivity and mechanical properties of 7B50 aluminum alloy in three aging tempers

7BS0作为我国新研制的高强高韧铝合金,首次应用于某飞机上。结合7×××系铝合金在飞机上的应用,针对7B50-173,T74和T76的时效工艺方案及其基础性能指标,将7B50-W51l铝合金双级时效到不同状态(T7351,T7451和T7651),检测7B50-T7351、T7451和T651状态的导电率和力学性能,验证7B50-W51l铝合金的时效工艺的可行性,并积累相应热处理状态的性能值。

7B50,as a newly developed high strength and high toughness aluminum alloyin China,was used in an aircraft for the first time.Combined with the application of 7×××series aluminum alloy in aircraft and based on the aging process scheme and basicperformance index of 7B50-T73,T74 and'T76,7B50-W511 aluminum alloy was aged to dif-ferent tempers(T7351,17451 and 17651)in two stages and the conductivity and mechani-cal properties of 7B50-17351,T7451 and'T7651 were tested,to verify the feasibility of theaging process of 7B50-W511 aluminum alloy and accumulate the corresponding performancevalues of heat treatment tempers.