摘要
通过分析变形温度为800-1050℃，应变速率为0．01-70s^-1条件下的实验数据.建立了TA15合金高温变形时的本构关系模型。运用有限元软件对TA15合金等温挤压过程进行了数值模拟，获得了不同挤压变形条件对变形区等效应变、等效应力、等效应变速率和温升的影响。结果表明，上模速度对变形体的等效应力、温升、载荷的影响显著。
The constitutive relationship of TA15 alloy in high temperature deformation has been established according to the isothermal compression results at deformation temperature of 800-1050℃, strain rate of 0.01-70 s ^-1. With the help of the FE method, the distribution of equivalent strain,, equivalent stress, equivalent strain rate and temperature rise during the isothermal extrusion of TA15 alloy under different processing conditions have been studied. The simulation results show that the punch velocity has significant effects on the equivalent stress, temperature rise and load of billet.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2006年第2期212-215,共4页
China Mechanical Engineering
基金
国家重点基础研究发展计划资助项目(G2000067206)
首届高校青年教师奖资助项目
关键词
TA15合金
等温挤压
热力耦合
数值模拟
TA15 alloy
isothermal extrusion
thermo--mechanical analysis
numerical slmulation
