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采用慢应变速率拉伸、电子显微镜等现代分析方法,研究了35CrMo钢动态应变时效现象对力学性能的影响。结果表明:在应变量为5%、应变速率为5×10-5s-1的不同温度(293、323、373和473 K)下动态应变时效后的35CrMo钢的伸长率变化不大,但动态应变时效后的抗拉强度均明显增加;35CrMo钢动态应变时效的最佳温度为373 K。35CrMo钢试样在室温下经过动态应变时效处理之后的室温屈服强度明显增加。
The effects of dynamic strain aging on the mechanical properties of 35CrMo steel were studied by slow strain rate stretching and electron microscopy. The results show that the elongation of 35CrMo steel after dynamic strain aging has little change at different temperatures (293, 323, 373 and 473 K) with strain rate of 5% and strain rate of 5 × 10-5s-1 The dynamic tensile strength after aging significantly increased; 35CrMo steel dynamic strain aging optimum temperature of 373K. The room temperature yield strength of 35CrMo steel samples after dynamic strain aging at room temperature was significantly increased.