摘要
本文采用ＴＥＭ分析技术、图像分析处理和统计分析等手段，对比研究了２０９０和２０９０＋微量Ｃｅ两种铝锂合金中Ｔ１（Ａｌ２ＣｕＬｉ）相分布规律的差异。研究结果表明：微量稀土Ｃｅ的加入有增加Ｔ１相析出量，减小Ｔ１相直径和均匀化Ｔ１相分布的作用；２０９０＋微量Ｃｅ合金中Ｔ１相的厚度略大于同等时效条件下２０９０合金中Ｔ１相厚度。并分析了微量Ｃｅ促进Ｔ１相形核的机制。
Using TEM,image and statistic analysis etc.,this paper studied the difference of distribution of T 1(Al 2LiCu) phase in two alloys of 2090 and 2090 with minor Ce.The research results show that adding minor cerium has a effect of increasing the amount of T 1 phase nucleus,reducing the diameter of T 1 phase and homogenizing T 1 phase The thickness of T 1 phase in 2090 with minor Ce alloy are little bigger than that of 2090 alloy at the same aging condition.The mechanism of the effect of minor cerium on the nucleation of T 1 phase has been discussed.
出处
《稀土》
EI
CAS
CSCD
北大核心
1999年第1期41-44,49,共5页
Chinese Rare Earths
基金
航空科技预研项目
