摘要
为了查明Ｃｕ含量对ＷｅｌｄａｌｉｔｅＴＭ０４９合金性能的影响，研究了４个实验合金的拉伸性能及部分微观组织．结果表明，综合考查强度与延伸率因素，３．９３％Ｃｕ（质量分数）为最优含量；从Ｔ１相形成时Ｃｕ原子的扩散考虑，Ｃｕ原子浓度增大，促进了Ｔ１相形核析出．
The effect of Cu on properties of Weldalite TM 049 alloys has been studied by tensile test and TEM observation. The results indicate that considering both strength and ductility factors, the optimum Cu content is 3.93%(mass fraction). The strength of alloy increases with the increasing of Cu content, while prior cold work weakens this trend. And ductility is higher at lower Cu levels. It can be explained from Cu vacancy diffusion that high Cu content accelerates the nucleation of T 1 phase.
出处
《中南工业大学学报》
CSCD
北大核心
1999年第4期404-406,共3页
Journal of Central South University of Technology(Natural Science)
基金
国家"九五"科技攻关计划基金
关键词
铝锂合金
铜
拉伸性能
扩散
Al Li alloy
Cu
tensile property
diffusion
