TA15合金等温挤压过程的热力耦合模拟  

FE Simulation of Deformation Coupled with Heat Transfer during the Isothermal Extrusion of TA15 Alloy

作　　者：龙丽[1] 李晓丽[1] 李淼泉[1] 于浩[2] 迟彩楼 温国华[2] 

机构地区：[1]西北工业大学,西安710072 [2]沈阳飞机工业(集团)有限公司,沈阳110034

出　　处：《中国机械工程》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

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.

关 键 词：TA15合金 等温挤压 热力耦合 数值模拟 

分 类 号：TG376[金属学及工艺—金属压力加工]