8Cr13MoV钢电渣重熔过程中夹杂物行为

研究了电渣过程在不同电流强度和冷却强度条件下，刀剪用8Cr13MoV马氏体不锈钢中夹杂物的行为和组织变化。研究表明，经过电渣重熔，8Cr13MoV钢中的主要夹杂物是以MnS、TiN、Al2O3以及以Al2O3为核心，（V，Ti）N为外围的复合夹杂物；电渣过程电流强度和冷却强度的变化对夹杂物类型没有影响；随电渣重熔电流强度增加，电渣锭中夹杂物的个数比和面积比减小，夹杂物粒径分布中较小尺寸的夹杂物数量增加；随电渣重熔冷却强度增加，夹杂物个数比基本不变，面积比减小，夹杂物粒径分布中较小尺寸的夹杂物数量增加，夹杂物得到细化。

Evolution of inclusions in 8Cr13MoV steel during ESR process

The evolution of inclusions during ESR and the microstructure of 8Cr13MoV martensitic stainless steel as-cast ingot were studied under the conditions of different current intensity and cooling rate. The results showed that,after electroslag remelting,the main inclusions of 8Cr13MoV steel were MnS,TiN,Al2O3 and complex inclusions(Al2O3 core surrounded by(Ti,V)N layer). The change of current intensity and cooling rate of the ESR process had no effect on the types of inclusions. With the increase of the current intensity during ESR process,the number and the area ratio of inclusions in ESR ingot decreased,and the number of inclusions with small size increased. With the increase of the cooling rate during ESR process,the number of inclusions was almost constant,the area ratio of inclusions decreased, while the number of inclusions with small size increased,resulting in a refining distribution of inclusions.