σ相析出对不锈钢力学性能的影响概述  

Overview ofσphase influencing on mechanical properties of stainless steels

作　　者：王永强[1] 林苏华 李娜 罗时浩 朱国辉 

机构地区：[1]安徽工业大学材料科学与工程学院,安徽马鞍山243002 [2]安徽工业大学冶金工程学院,安徽马鞍山243002

出　　处：《钢铁研究学报》2016年第2期1-8,共8页Journal of Iron and Steel Research

基　　金：安徽省自然科学基金资助项目(1508085QE102);安徽工业大学青年教师科研基金资助项目(QZ201403)

摘　　要：σ相是不锈钢中常见的一种硬而脆的金属间相,它可在铸造、轧制、热处理以及焊接等过程中析出,显著影响不锈钢的力学性能。从冲击韧性、塑性、拉伸强度、高温蠕变以及耐磨性等方面综述了国内外关于σ相对不锈钢力学性能影响研究的状况,分析了σ相的影响机制,并提出了目前研究中存在的一些问题以及将来可能的研究方向。During the processes of casting,rolling,heat-treatment and welding,σphase,one of intermetallics,may precipiate in stainless steels.It is characterized by hard and brittle and significantly affects the mechanical properties of stainless steels.The effects ofσphase on the properties including toughness,ductility,tensile strength,creep,hardness and wear resistance of stainless steels were overviewed and the influence mechanisms ofσphase were also discussed.Meanwhile,some problems of the present works and potential future researches were pointed out.

关 键 词：Σ相 不锈钢 力学性能 影响机制 

分 类 号：TG142.71[一般工业技术—材料科学与工程]