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40CrNiMo钢的冲击磨损实验发现，表面白层中产生了硬度更高的绝热剪切带.这种绝热剪切带有非常细小的晶粒，比白层更容易产生裂纹或断裂本文的研究认为：冲击磨损的白层中发生了动态回复，而白层中的绝热剪切带则可能发生了动态再结晶
The impact wear test of 40CrNiMo steel shows that the higher hardness adiabatic shear band is formed in the surface white layer.The adiabatic shear with very fine grains is more likely to crack or fracture than the white layer.The research of this paper is that: Dynamic recovery occurs in the white layer of impact wear, while dynamic recrystallization of the adiabatic shear band in the white layer may occur