Ti-13Nb-13Zr钛合金板材热处理组织演变分析  

Research on Microstructure Change of the Ti-- 13Nb-- 13Zr Alloy Plates

作　　者：牛中杰[1] 曹继敏[1] 杨华斌[1] 张战英[1] 

机构地区：[1]西北有色金属研究院,陕西西安710016

出　　处：《中国材料科技与设备》2011年第5期62-65,79,共5页Chinese Materials Science Technology & Equipment

基　　金：科技部中小企业技术创新基金资助项目（08C26116111559）

摘　　要：对Ti-13Nb-13Zr钛合金板材固溶和时效热处理的组织变化进行了分析，结果表明，为了得到细小等轴β晶粒，推荐固溶处理制度：700℃／0．5h、水冷或空冷。为了保留过冷β相结构，为后续的时效强化做准备，推荐固溶处理工艺为800℃／0．5h、水冷。为使Ti-13Nb-13Zr钛合金达到良好的组织匹配，并且避免产生恶化合金性能的ω相，推荐热处理制度：固溶800℃／0．5h（水冷）＋时效处理560℃／8h。本结果也为Ti-13Nb-13Zr钛合金技术开发和专业生产提供参考。The present paper has studied the evolving characteristics of microstructures on solid--soluting and aging treatment of Ti--13Nb--13Zr plates. The results indicate that the solid--solution treatment could be optimized as 700℃＋0. 5h, followed by air cooling or water quenching （WQ）, for the microstructures were identical as fine equiaxed β-grains . The supercooling β phases remained after a treatment of 800℃ ＋0. 5h/WQ, which prepared a structure for subsequent treatment of aging strengthening. The optimum heat treatment is recommended as an ageing treatment of 560℃＋8h after an initial solid-- solution of 800℃＋0. 5h/WQ, so as to obtain a good matching properties of mierostructures as well as to prevent the precipitation of ω phases. Thus providing a technical support for technology development and extensive production.

关 键 词：Ti-13Nb-13Zr钛合金 固溶处理 时效处理 显微组织 

分 类 号：TG146.4[一般工业技术—材料科学与工程]