超高强度铝合金的发展与应用

DEVELOPMENT AND APPLICATION OF SUPER-HIGH STRENGTH ALUMINUM ALLOYS

本文以Ｂ９６、７０９０、ＣＷ６７及７０５５等合金为典型，对国外超高强度铝合金的发展与应用进行了评述，初步介绍了国内７Ａ５５合金的发展现状，并与国外同类材料进行了对比。通过分析发现，７０５５、７Ａ５５和７０９０等超高强度铝合金与目前常用的高强铝合金（如７０７５、７１５０等）相比，在塑韧性相当的前提下，强度均有较大幅度的提高。

In this paper,the development and application of super-high strength aluminum alloys abroard,suchas BR96,7090,CW67 and 7055 were reviewed. The present status of 7A55 alloy has also been describedbriefly and the comparison of 7A55 alloy to its same kinds has been made. Compared with the common highstrength aluminum alloys(such as 7075, 7150), the super-high strength aluminum alloys(such as 7055,B96 ,7A55)have the higher strength and the similar ductility and toughness,which leads to their better a-bility on weight saving. Ats the IM supur-high strength aluminum alloy has the lower price than the PMproduct tR,the benefit of weight saving is marked still more, As the first super-high strength aluminum alloymade in our country.the main properties of 7A55 alloy is on a level with the similar alloys abroard. The de-veloping prospects of 7A55 alloy have been made in this paper.