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研究了变形温度为1000～1150℃、应变速率为0.001～1 s-1时16Mn2VB钢的热变形行为。利用流变应力数据,建立了16Mn2VB钢的热压缩变形本构关系,计算了变形激活能。根据材料动态模型,计算并分析了16Mn2VB钢的热加工图。结果表明,在1000～1040℃、0.03～0.16 s-1和1070～1125℃、0.5～1 s-1条件下功率耗散效率值较高,可以为确定热变形的最佳工艺参数提供指导。
The hot deformation behavior of 16Mn2VB steel was studied at deformation temperature of 1000 ~ 1150 ℃ and strain rate of 0.001 ~ 1 s-1. Using the rheological stress data, the constitutive relation of hot compression deformation of 16Mn2VB steel was established and the deformation activation energy was calculated. According to the material dynamic model, the hot working diagram of 16Mn2VB steel was calculated and analyzed. The results show that the power dissipation efficiency at 1000 ~ 1040 ℃, 0.03 ~ 0.16 s-1 and 1070 ~ 1125 ℃ and 0.5 ~ 1 s-1 is high, which can provide guidance for the determination of the optimum technological parameters of thermal deformation.