It is found that the steel resistances to fatigue crack growth increase with the rising of the tempering temperature when it is higher than the second hardening peak temperature.
发现高于二次硬比峰温度回火时，此钢的疲劳裂纹扩展阻力随回火温度升高而增加。
It is found that the steel resistances to fatigue crack growth increase with the rising of the tempering temperature when it is higher than the second hardening peak temperature.
发现高于二次硬比峰温度回火时，此钢的疲劳裂纹扩展阻力随回火温度升高而增加。
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