导论几乎所有靠马氏体强化的钢都要进行回火。本文拟对碳钢和低合金钢回火过程中马氏体组织变化的新近研究情况加以评述。本文遵循的方法是,承认主要由Cohen及其同事们在五十年代发展起来的对回火各阶段的划分。但是新近的结果指出,在能察觉碳化物形成之前,显微组织中的 Introduction Almost all steel strengthened by martensite should be tempered. In this paper, the recent research on the martensitic transformation during the tempering of carbon steel and low alloy steel is reviewed. This article follows the approach of recognizing the division of the tempering stage, developed mainly by Cohen and his colleagues in the 1950s. However, recent results indicate that in the microstructure prior to being able to detect carbide formation