通过对中碳硅锰低合金钢进行不同温度的亚温淬火,得到马氏体基体上分布数量不同的铁素体(及少量A′)组织,并进行磨料磨损试验。其结果表明,亚温淬火后,保留少量细小均匀分布的铁素体,耐磨性没有明显降低,甚至还有增加的趋势。其主要原因之一是M/F复相组织有较高的冷加工硬化和塑性储备。这对承受严重冲击的抗磨料磨损的机件来说,具有重要的意义。 Ferrite (with a small amount of A ’) microstructure distributed on the martensite matrix was obtained by sub-temperature quenching of medium-carbon Si-Mn low alloy steel at different temperatures. Abrasive wear tests were carried out. The results show that, after sub-temperature quenching, retaining a small amount of finely distributed ferrite, wear resistance did not significantly reduce, and even increased. One of the main reasons is that M / F duplex structure has higher cold work hardening and plastic storage. This is of great importance to wear-resistant wear parts subjected to severe impact.