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在１０（－５）～１０３Ｓ（－１）应变速率范围内研究了５０ＳｉＭｎＶＢ钢的变形行为。应变速率增加，流变应力增大，塑性和应变硬化指数无显著改变。提出试验钢具有 形式的本构方程。
The deformation behavior of 50SiMnVB steel was investigated in the strain rate range of 10 (-5) ~ 103S (-1). As the strain rate increases, the flow stress increases, and the plasticity and strain hardening index have no significant change. It is proposed that the test steel has a form of constitutive equation.