低碳钢或低碳合金钢,经淬火低温回火处理后获得低碳马氏体组织。由于它具有一系列优点,其应用日益广泛,取得了很好的效果。但现有的一些有关低碳钢的淬透性曲线都是在一般淬火条件下测定的。而低碳马氏体处理的特点是淬火温度高、冷却速度快。因此一般淬火条件下测定的淬透性曲线不能应用,而目前还缺乏这方面有关参考资料。 Low-carbon steel or low-carbon alloy steel, low-temperature martensite obtained after quenching and tempering. As it has a series of advantages, its application is more and more widely and has achieved good results. However, some of the available hardenability curves for low-carbon steels are determined under general quenching conditions. The characteristics of low-carbon martensite quenching temperature is high, fast cooling. Therefore, the hardenability curve can not be applied under the general quenching conditions, and there is still a lack of relevant reference materials in this regard.