TC18在(α+β)相区的热变形行为  

Hot Deformation Behavior of TC18 in α+β Region

作　　者：赵新[1] 

机构地区：[1]郑州航空工业管理学院六系,河南郑州450015

出　　处：《热加工工艺》2013年第2期12-14,共3页Hot Working Technology

基　　金：航空科学基金(2010ZE55012;2009ZF55006)

摘　　要：采用热压缩试验研究了钛合金TC18在700～850℃和应变速率0.001～1s-l的热变形行为。通过回归分析建立了流变应力与热变形参数相互关系的数学模型。结果表明:在应变速率一定的条件下,流变应力随温度的升高而降低;在变形温度一定的条件下,流变应力随应变速率的升高而升高。The hot deformation behavior of TC 18 alloy was investigated in a strain rate of 0.001 -1 s-1 and at 700-850 ℃ hot compression testing. The semi-empirical relations between flow stress and deformation variables were constructed linear regression. The results indicate that the flow stress decreases with increasing temperature under a constant strain ra the flow stress increases with the strain rate increasing at a certain deformation temperature.

关 键 词：钛合金 热变形 流变应力 

分 类 号：TG111.2[金属学及工艺—物理冶金]