15Cr-15Mn-0.4N不锈钢冶金缺陷分析  

Analysis for metallurgy defects of 15Cr-15Mn-0.4N stainless steel

作　　者：廖洪军[1] 姚长贵[1] 胡俊辉[1] 顾家强[1] 顾佳卿[1] 

机构地区：[1]宝山钢铁股份有限公司,上海200940

出　　处：《世界钢铁》2012年第1期34-37,共4页World Iron & Steel

摘　　要：结合现场生产工艺,分析了15Cr-15Mn-0.4N不锈钢棒材圆心部位点状偏析形成的机理。结果表明,点状偏析是由于存在大量的含Nb析出物以及聚集的大量夹杂物而形成的。调整AOD吹氮工艺,加强钢液的吹氩搅拌操作,以及在加入合金后保持充分的冶炼时间,有利于减少此类偏析现象和夹杂物缺陷的发生。The forming mechanics of core spot segregation at the center of 15Cr-15Mn-0.4N stainless steel bar were analysed, Combined with melting process. The results showed：The core spot segregations were made up of large quantity precipitations included niobium element and inclusions; The core spot segregations and inclusion defects can be reduced by adjusting nitrogen flush techanology, argon stiring techanology and the adequate smelting time after alloying process.

关 键 词：不锈钢 无磁钢 冶金缺陷 点状偏析 

分 类 号：TF01[冶金工程—冶金物理化学]