中南大学学报（自然科学版）2012，Vol.43Issue(5)：1662-1671,10.
Ti62421s钛合金的热变形行为及加工图
Deformation behavior and processing map of high temperature deformation of Ti62421s alloy
摘要
Abstract
The thermal compression flow stress behavior of the hot compression deformation of Ti62421s alloy with reduction rate of 60% was studied under the deformation temperature range of 900-1 060 ℃ and strain rate range of 0.001-10 s-1, The effect of temperature and strain rate on hot deformation flow stress of Ti62421s was studied, and the constitutive model equations and processing maps of hot deformation flow stress of Ti62421s alloy were established. The results show that during hot compression process, the flow stress increases with the increase of strain, then gradually stabilizes after reaching peak stress. The phenomenon of discontinuous yielding appears under the high strain rate (10 s-1) deformation; the peak stress increases with the increase of strain rate and decreases with the increase of temperature; and the optimal deformation process parameters of the alloy are as follows: temperature is 980 ℃, strain rate is 0.01-0.1 s-1.关键词
Ti62421s钛合金/热模拟实验/本构方程/加工图Key words
Ti62421s titanium alloy/ isothermal compression/ constitutive equation/ processing map分类
矿业与冶金引用本文复制引用
戚延龄,夏长清,王志辉,王玲,李学雄,孙玮..Ti62421s钛合金的热变形行为及加工图[J].中南大学学报（自然科学版）,2012,43(5):1662-1671,10.基金项目
总装备部预研基金项目(51312010311) （51312010311）
