时效处理对Ti-5Fe合金组织及硬度的影响  

Influence of Aging Treatment on Microstructure and Hardness of Ti-5Fe Alloy

作　　者：黄士星 林成[1] 张秀良 于佳石 尹桂丽[1] 张爱民[1] 赵志伟[1] 郭丽丽 

机构地区：[1]辽宁工业大学材料科学与工程学院,辽宁锦州121001 [2]内蒙古黄陶勒盖煤炭有限责任公司巴彦高勒煤矿,内蒙古乌审017312 [3]锦州锦恒汽车安全系统有限公司,辽宁锦州121007

出　　处：《热加工工艺》2016年第18期173-176,共4页Hot Working Technology

基　　金：国家自然科学基金项目(51201084)

摘　　要：研究了时效处理对Ti-5Fe合金组织及硬度的影响。结果表明,合金从β相区淬火后,合金的相组成为淬火ω相、α相和亚稳β相;在300、350、400℃时效后,合金组织为α相、β相以及等温ω相;在450℃时效后,合金组织中只观察到α相和β相;在Ti-5Fe合金中,ω相大量存在的温度低于450℃。随着时效温度的升高,合金的硬度先升高后下降,这主要是由合金在时效过程中α相的析出和ω相的形成与分解导致的。The influence of aging treatment on microstructure and hardness of Ti-5Fe alloy were investigated. The results indicate that the phase composition of the alloy is quenched to phase, α phase and metastable β phase after quenching from β phase region; the microstructure in the alloy is α phase,β phase and isothermal to phase after aging at 300, 350 and 400℃; only α phase and β phase can be observed in the microstructure of the alloy after the aging treatment at 450℃; the temperature where to phase could exist vastly is blow 450℃ in Ti-5Fe alloy. The hardness of the alloy increases firstly and then decreases with the increase of aging temperature, and this is mainly caused by the precipitation ofct phase and formation and decomposition of to phase.

关 键 词：Ti-5Fe 合金 时效处理 棕 相 组织和硬度 

分 类 号：TG166.5[金属学及工艺—热处理] TG156.92[金属学及工艺—金属学]