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研究了不同热处理状态的２０Ｃｒ和４０Ｃｒ钢在不同冲击速度（ｖ）下，应变速率（ε）和动态屈服强度（σα）的变化规律，研究表明：σα＝σ０ｅｘｐ（Ａｌｎε），ε＝ε０ｅｘｐ（Ｂｖ），σα＝σ０ｅｘｐ（Ｃｖ）．其中只有两个是独立的，并用粘塑性本构理论分析了微观作用机制。
The changes of strain rate (ε) and dynamic yield strength (σα) of 20Cr and 40Cr steels with different heat treatments were investigated. The results show that σα = σ0exp (Alnε), ε = ε0exp (Bv ), Σα = σ0exp (Cv). Only two of them are independent, and the visco-plastic constitutive theory is used to analyze the microscopic mechanism.