摘要
为了实现工业纯钛TA1的数值模拟,制定合理的自由锻工艺参数,利用Gleeble-1500D热模拟实验机对工业纯钛TA1在变形温度为700、800、900和950℃和应变速率为0.01、0.1、1和5 s-1条件下的流变应力行为进行研究,最大变形程度为真应变0.7。结果表明:工业纯钛TA1在热压缩变形过程中,出现了动态回复与再结晶;流变应力随温度的升高而降低,随变形速率的减小而降低;在高的变形温度与低的应变速率下,工业纯钛TA1容易出现软化;求得了热变形激活能(Q)和双曲正弦形式的Arrhenius本构方程。
In order to perform numerical simulation and design the properly free forging process parameters of commercially pure titanium TA1,the flow stress behavior of titanium TA1 was researched by Gleeble-1500D thermal simulation test machine under strain rates of 0. 01 s- 1,0. 1 s- 1,1 s- 1and 5 s- 1,and deformation temperatures of 700 ℃,800 ℃,900 ℃ and 950 ℃,respectively. The maximum deformation degree was 0. 7. The results show that the dynamic recovery and recrystallization of the material occur during hot temperature compression test. The flow stress is increased with the decreasing of deformation temperature and decreased with the decreasing of strain rate. The pure titanium TA1 is softened easily at low strain rate and high temperature. The thermal deformation activation energy( Q) and hyperbolic sine Arrhenius constitutive equation of the pure titanium TA1 are got by this experiment.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2014年第5期196-200,共5页
Transactions of Materials and Heat Treatment
基金
河南省科技创新杰出人才支持计划项目(144200510001)
长江学者和创新团队发展计划资助(IRT1234)
关键词
工业纯钛TA1
变形行为
热压缩
激活能
本构方程
pure titanium TA1
deformation behavior
hot temperature compression
activation energy
constitutive equation
