在保证强度满足要求的前提下提高回火温度可以提高钢的耐延迟断裂性能。

It was observed that the delayed fracture resistance of 30MnSi steel bars increases with tempering temperature at a sufficient strength.

研究了淬火和回火温度对中碳低合金耐磨铸钢组织和力学性能的影响。

The influences of quenching and tempering temperature on microstructure and mechanical properties of medium-carbon-low-alloy wear-resistant cast steel were investigated.

结果发现，在相对慢速冷却条件下，出现二次硬化现象，回火温度升高，韧性得到改善；

The results show that secondary hardening appears in the condition of relatively slower cooling rate, and the higher tempering temperature, the better toughness.

通过改变预处理回火温度，研究了基体强度对氮化钢渗氮件三点弯曲疲劳强度的影响。

The effects of matrix strength on three-point bent fatigue strength for the nitriding parts made from the nitrided steel have been studied by changing tempering temperature during pre-treatment.