利用Gleeble3500热模拟机对以马氏体为起始组织的15CrMnMoVA钢进行了温变形压缩试验研究,得到了真应力一真应变关系曲线。结果表明,在试验条件下,随变形温度的升高或变形速率的降低,变形抗力呈下降趋势。建立了本构关系的数学方程:……进一步获得了变形抗力与变形温度和变形速率的表达式:……
Warm deformation for 15CrMnMoVA steel has been carried out by Gleeble 3500 simulator with martensite starting structure (MSS). The flow behavior was studied according to the obtained true stress-true strain curves. The results shown that under the warm deformation conditions, the deformation resistance decreased as increasing deforming temperatures or decreasing the strain rate. The constitutive equation was calculated as:……And the equation for deformation resistance was further obtained as.……