摘要
采用Gleeble 3500热模拟试验机研究了TA18钛合金在750~1050℃和0.001~10 s-1条件下的热变形行为,建立了Zener-Hollomon参数(Z参数)的本构方程及热加工图。结果表明,TA18钛合金β单相区的变形激活能为310.71 kJ/mol,α+β双相区的应变激活能为578.78 kJ/mol。经过拟合得到了TA18钛合金在单相区和双相区变形的流变应力本构方程。通过对热加工图的分析,确定了TA18钛合金合理的热加工参数范围为:变形温度825~900℃,应变速率0.01~0.05 s^(-1)。试验结果可为TA18钛合金热加工工艺参数的选择提供理论依据。
The hot deformation behavior of TA18 Titanium alloy was investigated using the Gleeble-3500 test machine at 750-1050 oC with strain rates from 0.001 s-1to 10 s-1,and the constitutive equation including Zener-Hollomon parameter(Z parameter)and processing map was established.The results revealed that the activation energy of TA18 alloy in theβsingle-phase region andα+βtwo-phase region was 310.71 kJ/mol and 578.78 kJ/mol,respectively.The fitting flow stress constitutive equations were obtained.In addition,the processing maps showed that the optimal hot processing parameter ranges were 825-900 oC with a strain rate of 0.01~0.05 s^(-1).This study can provide a theoretical basis for selecting the hot working parameters of TA18 titanium alloy.
作者
彭力
江健
罗小峰
申学良
王莹
邢远
Peng Li;Jiang Jian;Luo Xiaofeng;Shen Xueliang;Wang Ying;Xing Yuan(State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization,Panzhihua 617000,Sichuan,China;Chengdu Advanced Metal Materials Industrial Technology Research Institute Co.,Ltd.,Chengdu 610303,Sichuan,China)
出处
《钢铁钒钛》
CAS
北大核心
2022年第6期45-50,共6页
Iron Steel Vanadium Titanium
关键词
TA18钛合金
热压缩变形
本构方程
热加工图
TA18 titanium alloy
hot compression deformation
constitutive equations
thermal pro-cessing map
作者简介
彭力,1990年出生,男,四川大英人,工程师,研究方向:钛合金加工,E-mail:listen0812@163.com。
