TC21钛合金高温热变形行为研究  

Study on High Temperature Deformation Behaviors of New Type TC21 Titanium Alloy

作　　者：朱知寿[1] 王新南[1] 顾伟[2] 陈明和[3] 

机构地区：[1]北京航空材料研究院,北京100095 [2]成都飞机工业集团有限责任公司,四川成都610092 [3]南京航空航天大学,江苏南京210016

出　　处：《中国材料进展》2009年第2期51-55,共5页Materials China

基　　金：航空科学基金资助项目(2007ZF21011)

摘　　要：研究了不同热变形条件下TC21钛合金的流变应力行为和微观组织演变规律,分析了高温热变形行为模型及动态再结晶现象。结果表明,随变形温度的升高和热变形速率的降低,TC21钛合金在热变形过程中相变和变形同时发生,导致了热变形过程中的动态回复和再结晶现象。By means of thermo-simulation experiment, the high temperature stress-strain behaviors and mierostrueture evolutions of TC21 titanium alloy within temperature range of 850 - 990℃ and strain rate range of 0. 01 -10 s^-1 have been studied. The deformation model and dynamic recrystallization behaviors have also been analyzed. The results show that the joint effect of deformation and phase transformation mechanism will occur when the deformation temperature arised and deformation rate decreased, which leads to different dynamic recovery and recrystailization.

关 键 词：TC21钛合金 热变形 微观组织 回复 再结晶 

分 类 号：TG335.5[金属学及工艺—金属压力加工] TG146.23[一般工业技术—材料科学与工程]