金属注射成形制备高氮无镍奥氏体不锈钢的烧结优化  

Sintering Optimization of High-nitrogen and Nickel-free Austenitic Stainless Steel Prepared by Metal Injection Molding

作　　者：刘瑞洋 邹黎明 王力彪 陈学文 LIU Ruiyang;ZOU Liming;WANG Libiao;CHEN Xuewen(Building Materials Business Department of Ansteel Real Estate Construction Co.,Ltd.,Anshan 114001,Liaoning,China;Intelligent Manufacturing College of Guangzhou Vocational College of Technology&Business,Guangzhou 510623,Guangdong,China;Guangdong Engineering Polytechnic,Guangzhou 510520,Guangdong,China)

机构地区：[1]鞍钢房产建设有限公司建材事业部,辽宁鞍山114001 [2]广州科技贸易职业学院智能制造学院,广东广州510623 [3]广东工程职业技术学院,广东广州510520

出　　处：《工程技术研究》2023年第4期1-4,共4页Engineering and Technological Research

基　　金：2022年广州市教育局高校科研项目(202235379)。

摘　　要：用粉末冶金方法制备高氮无镍奥氏体不锈钢,可以解决镍过敏问题,节约成本,已成为当今的研究热点。文章采用金属注射成型技术(Metal Injection Molding,MIM)制备此类不锈钢。采用正交试验方法系统研究了烧结温度、氮气压力和保温时间烧结参数对奥氏体不锈钢密度、收缩率和氮含量的影响,以获得最佳烧结参数。研究发现,当烧结温度为1200℃,保温时间为6 h,氮气压力为1100 mbar时,样品具有较高的密度(7.52 g/cm3)和氮含量(0.76%)。渗氮烧结后不锈钢基体为奥氏体。The preparation of high-nitrogen and nickel-free austenitic stainless steel by powder metallurgy method can solve the problem of nickel allergy and save cost,which has become a hot research topic today.In this paper,this kind of stainless steel is prepared by metal injection molding(MIM).The influence of sintering parameters such as sintering temperature,nitrogen pressure and holding time on the density,shrinkage and nitrogen content of austenitic stainless steel is systematically studied by orthogonal test to obtain the best sintering parameters.It is found that when the sintering temperature is 1200℃,the holding time is 6 h,and the nitrogen pressure is 1100 mbar,the sample has high density(7.52 g/cm3)and high nitrogen content(0.76%).The stainless steel matrix is austenite after nitriding and sintering.

关 键 词：奥氏体不锈钢 高氮无镍 粉末冶金 

分 类 号：TF12[冶金工程—粉末冶金]