新型耐蚀超级奥氏体不锈钢中的高温析出相  

High Temperature Precipitated Phases of New Corrosion-Resistant Super Austenitic-Steel

作　　者：臧华勋[1] 肖学山[1] 童潮山[2] 张忠华[2] 张春霞[2] 邵卫东[2] 

机构地区：[1]上海大学材料研究所,上海200072 [2]宝山钢铁股份有限公司宝钢研究院,上海200940

出　　处：《钢铁研究学报》2009年第2期44-47,共4页Journal of Iron and Steel Research

摘　　要：为了改善新型耐蚀超级奥氏体不锈钢的热处理工艺,用SEM,TEM和XRD测试方法对该钢高温固溶处理后析出相的分布、形貌及类型进行了观察、分析和研究。结果表明:这种新型耐蚀超级奥氏体不锈钢经高温固溶处理后,晶内析出的针状或块状第二相为σ相和碳化物(Fe,Cr,Mo)6C,晶界析出相主要是呈链状的σ相。The precipitated phases of a new corrosion-resistant super austenitic-steel after high temperature solution treatment were investigated. In order to improve the beat treatment process, the distribution, patterns and types of the precipitated phases in the steel were studied by using SEM, TEM, and XRD. The result shows that the intracrystalline precipitated phases are acicular or massive a phase and carbide-（Fe, Cr, Mo） 6 C, and the intergranular precipitated phases mainly include catenulate σ phase.

关 键 词：奥氏体不锈钢 碳化物 Σ相 

分 类 号：TG142.71[一般工业技术—材料科学与工程]