摘要
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8Cr13Mo V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,8Cr13Mo V钢中的主要夹杂物是以Mn S、Ti N、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。
The evolution of inclusions during ESR and the microstructure of 8Cr13 Mo V martensitic stainless steel ascast ingot were studied under the conditions of different current intensity and cooling rate. The results showed that,after electroslag remelting,the main inclusions of 8Cr13 Mo V steel were Mn S,TiN,Al_2O_3 and complex inclusions（Al_2O_3 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.
出处
《钢铁》
CAS
CSCD
北大核心
2016年第8期41-48,共8页
Iron and Steel
基金
国家自然科学基金资助项目(51444004
51574025)
