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采用Gleeble-3500热模拟试验机,对实验材料进行热压缩变形,研究了该材料在850~1000℃和应变速率为5~20s-1条件下的高温流变应力行为。考虑到实验过程的实际温度及应变速率与实验设定值存在差异,实验对材料高温变形过程进行了温度补偿和应变速率补偿,并给出了实验材料的变形常数(β、α、激活能Q)在材料高温变形过程中的连续变化规律,使传统的本构方程更加准确。
The Gleeble-3500 thermal simulator was used to carry out hot compressive deformation on the experimental materials. The high temperature flow stress behavior of the material at 850-1000 ℃ and strain rate of 5-20 s-1 was studied. Considering the difference between experimental temperature and strain rate and the experiment set value, the temperature compensation and the strain rate compensation were carried out during the high temperature deformation process. The deformation constants (β, α, Q ) In the material during the high temperature deformation of the continuous variation of the traditional constitutive equation more accurate.