固溶温度对Ti-5.5Al-2.0Zr-1.5Sn-1.5Nb-0.5Mo合金组织及性能影响  

Effects of Solution Temperature on Microstructure and Properties of Ti-5.5Al-2.0Zr-1.5Sn-1.5Nb-0.5Mo Alloy

作　　者：谭聪 张静 董英杰 段志宏 陈映志 冉瑞强 Tan Cong;Zhang Jing;Dong Yingjie;Duan Zhihong;Chen Yingzhi;Ran Ruiqiang(Panzhihua Hangyou New Material Technology Co.,Ltd.)

机构地区：[1]攀枝花航友新材料科技有限公司

出　　处：《特种铸造及有色合金》2023年第1期111-115,共5页Special Casting & Nonferrous Alloys

摘　　要：以一种新型耐蚀钛合金Ti-5.5Al-2.0Zr-1.5Sn-1.5Nb-0.5Mo为研究对象,将其热轧板材进行不同温度的固溶时效热处理,研究了固溶时效工艺对新型耐蚀钛合金板材微观组织、力学性能的影响。结果表明,当固溶温度从900℃升高到930℃时,组织呈现等轴化趋势,β转变组织明显增多;当在960℃进行固溶时,组织为魏氏组织形貌。随着固溶温度不断升高,板材的抗拉强度、屈服强度和洛氏硬度随之升高,而伸长率随之下降。The hot-rolled plates of a novel corrosion-resistant Ti-5.5Al-2.0Zr-1.5Sn-1.5Nb-0.5Mo alloy were subjected to solution aging heat treatment at different temperatures, and the influence of solution aging process on the microstructure and mechanical properties of alloy sheet was investigated. The results indicate that as the solution temperature increases from 900 ℃ to 930 ℃, the microstructure tends to be equiaxed, and the β-transition microstructure is significantly increased, which presents Widmannstatten morphology under solid solution of 960 ℃. With increasing in solution temperature, the tensile strength, yield strength and rockwell hardness of the sheet are increased, while the elongation is decreased.

关 键 词：耐蚀钛合金 固溶 组织演变 力学性能 

分 类 号：TG166.5[金属学及工艺—热处理] TG146.23[金属学及工艺—金属学]