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用 Gleeble-1500模拟试验机研究了45V 钢热变形条件下的动态回复行为。45V 钢动态回复过程的流变应力σ对应变ε的变化为:σ=[σ_3~2+(σ_0~2-σ_3~2)e~(-2Be]~(1/2),位错密度变化率 dp/dε=2A/(aμb)~2-2Bβ。分析了变形温度和应变速率对动态回复行为的影响。
The dynamic response of 45V steel under hot deformation was studied by Gleeble-1500 simulator. The change of strain σ of the 45V steel during dynamic recovery is σ = [σ 3 ~ 2 + (σ 0 ~ 2 ~ σ 3 ~ 2) e ~ (-2Be) ~ (1/2) The rate of dp / dε = 2A / (aμb) ~ 2-2Bβ.The effect of deformation temperature and strain rate on the dynamic recovery behavior was analyzed.