超级奥氏体不锈钢的发展  

Development of super austenitic stainless steel

作　　者：李兵兵 郎宇平[1] 陈海涛[1] 屈华鹏[1] 冯翰秋 田志凌[1] LI Bing-bing;LANG Yu-ping;CHEN Hai-tao;QU Hua-peng;FENG Han-qiu;TIAN Zhi-ling(Research Institute of Special Steels,Central Iron and Steel Research Institute,Beijing 100081,China)

机构地区：[1]钢铁研究总院有限公司特殊钢研究院,北京100081

出　　处：《中国冶金》2022年第6期54-60,70,共8页China Metallurgy

摘　　要：日益增长的工业需求推动着超级奥氏体不锈钢的研发,以研发时间为序阐述超级奥氏体不锈钢3个发展阶段。第1个阶段主要是为解决硫酸介质环境的耐腐蚀性而开发的不锈钢;第2个阶段是在第1阶段研发钢的基础上添加质量分数约为0.2%的N元素、并将Mo元素质量分数增加到约6%而研发的几种耐腐蚀性能良好的超级奥氏体不锈钢;第3个阶段是在6%Mo钢的基础上将Cr、Mo、N含量都进行较大幅度的提高,其中Mo元素质量分数增加到约7%,N元素质量分数控制在0.5%左右,并加入适量Mn元素而研发出耐腐蚀性优异的超级奥氏体不锈钢。阐述了超级奥氏体不锈钢研发过程中的2个重要技术,即炉外精炼与氮合金化技术,并展望了超级奥氏体不锈钢的未来发展及推广应用。The increasing industrial demand promotes the research and development of super austenitic stainless steel,three stages of super austenitic stainless steel in order of development time is described.The first stage is the development of stainless steel mainly to solve the corrosion resistance in sulfuric acid medium environment.The second stage is the development of several super austenitic stainless steels with good corrosion resistance by adding about 0.2%N element and increasing the mass fraction of Mo element to about 6%on the basis of the steel developed in the first stage.In the third stage,based on 6%Mo containing steel,Cr,Mo and N contents are greatly improved,the mass fraction of Mo element is increased to about 7%,the mass fraction of N element is controlled at about 0.5%,and appropriate amount of Mn is added to develop super austenitic stainless steel with excellent corrosion resistance.Two important technologies in the research and development of super austenitic stainless steel are described,e.g.secondary refining and nitrogen alloying,and the future development and application of super austenitic stainless steel are prospected.

关 键 词：超级奥氏体不锈钢 耐腐蚀 炉外精炼 氮合金化 材料合金设计 

分 类 号：TG142.71[一般工业技术—材料科学与工程]