Cr12稀土铬钒共渗覆层组织性能的研究  

Properties of RE-chromvanading Layer of the Cr12 Cold Work Die Steel

作　　者：苏谋 黄福祥[1] 曹登驹 赵燕燕[1] 姜智枭 

机构地区：[1]重庆理工大学材料科学与工程学院,重庆400054 [2]重庆莱斯硬化技术研究所,重庆400084

出　　处：《重庆理工大学学报（自然科学）》2014年第2期37-39,58,共4页Journal of Chongqing University of Technology：Natural Science

基　　金：重庆市科技攻关项目(cstc2012gg-yyjs0256)

摘　　要：对Cr12冷作模具钢进行稀土铬钒共渗,利用金相显微镜、扫描电镜(SEM)、显微硬度测试仪、XRD结构分析等对覆层进行组织性能研究。结果表明:Cr12模具钢经稀土铬钒940℃×4 h共渗后,渗层物相主要由VC、Cr23C6、Cr7C3等组成,渗层厚度达到5.4μm,硬度达到2120 HV0.05。渗层组织均匀、结构致密,表面显微硬度显著提高,说明稀土的添加对铬钒共渗起到了促进作用。Microstructures and properties of RE-chromvanading layer of the Cr12 cold work die steel were investigated by metallographic microscope, scanning electron microscopy （SEM） , microhardness tester, and XRD structural analysis. The results show that the ehromvanading layer consists of VC, Cr23C6, Cr7C3 phase, which is 5.4urn in thickness and 2120HV0.05 inhardness. The RE-chromvanad- ing layer organization is uniform and the structure is dense after salt-bath RE-chromvanading. And the surface microhardness of Cr12 cold work die increases significantly after 940% by 4h RE-chromva- nadizing. The addition of rare earth plays a positive role in chromvanadizing.

关 键 词：稀土铬钒共渗 TD处理 冷作模具 

分 类 号：TB34[一般工业技术—材料科学与工程]