30Cr13Cu4金属注射成形材料的热处理工艺研究  

Research on Heat Treatment of 30Cr13Cu4 Materials Prepared by Metal Injection Molding Technique

作　　者：周联生 刘文彬 陈小煜 陈家欣 赖泽标 ZHOU Liansheng;LIU Wenbin;CHEN Xiaoyu;CHEN Jiaxin;LAI Zebiao(Yangjiang Supervision and Inspection Institute of Quality and Metrology,Yangjiang 529500,China;Department of Electric Engineering,Yangjiang Polytechnic,Yangjiang 529566,China;Yangjiang Branch,Guangdong Laboratory for Materials Science and Technology(Yangjiang Advanced Alloys Laboratory),Yangjiang 529500,China)

机构地区：[1]广东省阳江市质量计量监督检验所,广东阳江529500 [2]阳江职业技术学院,广东阳江529566 [3]材料科学与技术广东省实验室阳江分中心(阳江合金材料实验室),广东阳江529500

出　　处：《材料研究与应用》2023年第4期753-760,共8页Materials Research and Application

基　　金：广东省市场监督管理局科技项目(2023CZ24)。

摘　　要：设计了一种金属注射成形30Cr13Cu4不锈钢材料,研究了热处理工艺参数(时效处理温度和保温时间)对材料组织及性能的影响。结果表明:含Cu金属粉末注射成形的合金组织均匀,相对密度为97.9%;随着时效温度的提高,基体上析出的碳化物数量增加并长大,而析出的球形纳米ε-Cu相转变成短棒状,材料的硬度先增加后降低;在520℃下进行时效处理时,随着保温时间的延长,合金的硬度不断提高,保温14 h后合金硬度为327 HV,析出弥散分布的ε-Cu析出相对合金硬度提高作用明显。In this paper,a kind of metal injection molding(MIM)30Cr13Cu4 stainless steel alloy was designed.The effects of heat treatment parameters,including aging temperature and holding time,on the microstructure and properties of the material were studied.The results show that the alloy containing Cu has a uniform microstructure with a relative density of 97.9%.As the aging temperature increased,the amount of carbides precipitated on the matrix increased and grew,while the spherical nanoε-Cu phase precipitated transforming into short rods,and the hardness of the material firstly increased and then decreased.When aging at 520℃,the hardness of the alloy increased with the extension of the holding time,and the hardness of the alloy was 327 HV after holding for 14 h,and the relative hardness increase of the precipitated dispersive distributedε-Cu phase was obvious.

关 键 词：金属粉末注射成形 时效处理 马氏体不锈钢 Ε-CU相 

分 类 号：TG146[一般工业技术—材料科学与工程]