摘要
TC21钛合金在不同条件下超塑拉伸变形后,进行双重退火热处理,研究热加工工艺对TC21合金显微组织演变的影响。结果表明,当变形温度在890～960℃时,TC21合金的伸长率随变形温度的增加先增加后减少,最佳超塑性变形温度为910℃;TC21合金在α+β相区超塑变形,然后在α+β相区双重退火处理后得到双态组织;在准β区进行超塑变形、α+β相区双重退火处理后得到网篮组织。
After superplastic tensile deformation and double annealing heat treatment at different conditions, the effects of hot working technology on microstructure evolution of TC21 titanium alloy were investigated. The results show that at 890 ℃～960 ℃, the elongation of TC21 alloy is increased firstly and then decreased with the increase of deformation temperature. The optimal superplastic deformation temperature is 910 ℃. After superplastic deformation and double annealing treatment in α+β phase zone,the microstructure of TC21 alloy exhibits duplex structure. After superplastic deformation in quasi-β phase zone and double annealing treatment in α+β phase zone, basketweave structure can be observed in the microstructure of TC21 alloy.
出处
《特种铸造及有色合金》
CAS
CSCD
北大核心
2013年第4期381-383,共3页
Special Casting & Nonferrous Alloys
基金
航空科学基金项目(2010ZE56016)
国家自然科学基金资助项目(51164029)
关键词
TC21合金
超塑变形
双重退火
组织
TC21 Alloy, Superplastic Deformation, Double Annealing , Microstructure
