TA10钛合金多向锻造数值模拟本构方程的构建

Construction of constitutive equation of TA10 titanium alloy multi direction forging numerical simulation

本文为研究TA10钛合金组织形貌与力学性能的关系,通过热模拟试验,对TA10钛合金在800℃~1050℃变形温度范围内和不同应变速率下(0.01s-1,0.1s-1,1s-1和5s-1)进行热变形研究。通过对真应力-真应变分曲线的分析,探索了相应的软化机制,确定了热变形激活能,建立了本构关系。研究了峰值应力与温度和变形速率之间的函数关系,为TA10钛合金的多向锻造加工控制提供理论基础。

In order to study the relationship between the microstructure and mechanical properties of TA10 titanium alloy, the thermal deformation of TA10 titanium alloy has been studied in the temperature range of 800℃~1050℃ and at different strain rates(0.01 s-1, 0.1 s-1, 1 s-1 and 5 s-1). By analysis of the true stress true strain curve, the corresponding softening mechanism has been explored, the activation energy of thermal deformation has been determined. The constitutive relation has been established. The relationship between peak stress, temperature and deformation rate has been studied, which provides a theoretical basis for the multi-directional forging control of TA10 titanium alloy.