渗碳和碳氮共渗是机械零件最普遍的表面强化方法。这样处理后的零件寿命,由许多因素所决定,其中最重要的是渗入元素和硬度沿强化层的分布梯度,以及强化层的显微组织。 因此,研究强化层的淬透性,具有很大的实际意义。强化层中的碳、氮和其他一些合金元素、强化层的相成分和结构缺陷,都对淬透性产生影响。 Carburizing and carbonitriding are the most common surface hardening methods for mechanical parts. The life of the part after this treatment is determined by a number of factors, the most important of which is the distribution gradient of the infiltrated elements and hardness along the reinforcement and the microstructure of the reinforcement. Therefore, it is of great practical significance to study the hardenability of the strengthened layer. Reinforcement of carbon, nitrogen and some other alloying elements, strengthening the phase composition and structural defects, have an impact on hardenability.