【摘要】 利用Gleeble-1500D热模拟试验机,在变形温度为960~1050℃,应变速率为0.01~10s-1范围内对TC11钛合金进行等温恒应变速率压缩实验。通过真应力-真应变曲线,分析了变形温度和应变速率对流变应力的影响规律,并在Arrhenius双曲正弦型方程的基础上建立了适用于TC11钛合金热变形的本构方程。误差分析表明所建立的本构方程与实验值吻合较好,为制定TC11钛合金锻造工艺提供了理论依据。更多还原

【Abstract】 Isothermal compression of the TC11 titanium alloy was conducted on a Gleebe-1500D hot-simulator at the deformation temperature ranging from 960 to 1050 °C and the strain rate ranging from 0.01 to 10 s -1 . The influence of deformation temperature and strain rate on the stress was studied according to true stress-true strain curves, and the constitutive equations of TC11 titanium alloy during hot deformation were established based on hyperbolic sine equations of Arrhenius type. Error analyses show that the established constitutive equations are coincident with experimental data well, and they provide a theory basis for the forging technique of TC11 titanium alloy.更多还原