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TC11钛合金高温变形本构关系研究

Study on constitutive relationship of TC11 titanium alloy during high temperature deformation

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【Author】 ZHAO Wei-gang1 LI Xin1,2 LU Shi-qiang1 LIU Zhi-he1 WANG Ke-lu1 LI Zhen-xi3 CAO Chun-xiao3(1.School of Materials Science and Engineering,Nanchang Institute of Aeronautical Technology,Nanchang 330063 China)(2.Institute of Materials Science and Technology,Nanjing University of Aeronautics and Astronautics,Nanjing 210016 China)(3.Beijing Institute of Aeronautical Materials,Beijing 100095 China)

【机构】南昌航空工业学院材料科学与工程学院；北京航空材料研究院；北京航空材料研究院南昌330063；南昌330063 南京航空航天大学材料科学与技术学院；南京210016；南昌330063；北京100095；

【摘要】在Thermecmastor-Z型热加工模拟试验机上,对TC11钛合金在990℃～1080℃、0.001s-1～70s-1范围内进行了高温压缩实验。通过真应力-真应变曲线,分析了流动应力随变形热力参数的变化规律,并在Arrhenius方程的基础上考虑了真应变对流动应力的影响,构建出TC11钛合金的本构关系。误差分析表明,该本构方程有较好的精度,可适合于工程应用。更多还原

【Abstract】 High temperature compression tests of TC11 titanium alloy were carried out in the temperature range 990℃～1080℃ and strain rate range 0.001s-1～70.0s-1by using the Thermecmastor-Z hot working simulator.The change of flow stress with deformation thermal parameters was revealed from true stress-true strain curves,and constitutive relationship of TC11 titanium alloy was obtained on the base of Arrhenius equations with considering the effect of true strain on flow stress simultaneously.Error analysis showed that the constitutive relationship of TC11 titanium alloy can be applied to engineering for its desired precision.更多还原

【关键词】 TC11钛合金；高温变形；本构关系；
【Key words】 TC11 titanium alloy； High temperature deformation； constitutive relationship；

【文献出处】塑性工程学报 ,Journal of Plasticity Engineering , 编辑部邮箱 ,2008年03期

【分类号】TG132.32
【被引频次】27
【下载频次】669

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