固体渗碳对CuCoCrNiFe高熵合金组织和硬度的影响  

The effect of solid carburization on microstructure and hardness of CuCoCrNiFe high entropy alloy

作　　者：李哲[1] 张伟强[1] 孙日伟[1] 付华萌[2] 

机构地区：[1]沈阳理工大学材料科学与工程学院,沈阳110159 [2]中国科学院沈阳金属研究所,沈阳110016

出　　处：《功能材料》2016年第6期190-193,共4页Journal of Functional Materials

基　　金：国家重点基础研究发展计划(973计划)资助项目(2011CB610405)

摘　　要：采用固体渗碳法,对CuCoCrNiFe高熵合金进行850℃/5h的渗碳处理。采用SEM、EDS、EPMA、XRD分析了渗碳后试样的显微组织和相组成,并测量了试样的显微硬度。结果表明,经过渗碳处理后,合金上析出了大量碳化物。在表面附近,碳化物细小,十分密集。距离表面距离增加,碳化物分布密度下降,尺寸增大。试样表层硬度达到240HV,与基体相比有明显增加。A high entropy alloy CuCoCrNiFe was treated at 850 ℃ for 5 h by solid carburization.SEM,EDS, EPMA and XRD were employed for microstructural characterization and phase indentification.The measure-ment of hardness of the carburized sample was performed.The results show that after carburization,a large number of carbides precipitate in the sample.Near the sample surface,the carbides are fine and aggregated.As the distance from sample surface increasing,the intensiveness of carbides gets lower,whereas the size increa-ses.The hardness of sample surface rises to 240 HV,which has been improved greatly compared to that of the substrate.

关 键 词：固体渗碳 高熵合金 碳化物 硬度 

分 类 号：TG146[一般工业技术—材料科学与工程] TG156.81[金属学及工艺—金属材料]