AlCoCrCuFeNi-x高熵合金微观组织及硬度的研究  

Study on Microstructure and Hardness of AlCoCrCuFeNi-x High-entropy Alloy

作　　者：王春伟[1] 唐健江[1] 欧子义[1] 苏广才[1] 欧德群[1] 夏薇[1] 

机构地区：[1]广西大学有色金属及材料加工新技术教育部重点实验室,广西南宁530004

出　　处：《铸造技术》2010年第12期1584-1587,共4页Foundry Technology

基　　金：广西大学有色金属及材料加工新技术教育部重点实验室开放基金(合同编号:GXKFJ09-05)

摘　　要：利用SEM、EDS、XRD等方法研究了AlCoCrCuFeNi-x高熵合金的铸态微观组织和相结构,并测试了合金的硬度。结果表明,该组合金系都形成了简单的BCC、FCC及BCC＋FCC结构固溶体,在AlCoCrCuFeNi0.5、AlCoCrCuFeNi0.8、AlCoCr-CuFeNi和AlCoCrCuFeNi1.2四组合金中都存在少量的金属间化合物,而在AlCoCrCuFeNi1.5和AlCoCrCuFeNi1.8这两组合金中化合物都以纳米晶弥散化分布。六组高熵合金的维氏硬度在355~491 HV之间。Based on the study of microstructures and phase structures of high-entropy alloys using SEM,EDS,XRD,then the hardness of the alloys were tested.The results of investigation showed that： all the 6 series of alloys eventually formed simple BCC,FCC and BCC ＋ FCC structure solid solutions.There were amount of intermetallic compounds in AlCoCrCuFeNi0.5,AlCoCrCuFeNi0.8,AlCoCrCuFeNi and AlCoCrCuFeNi1.2,and there were scattered distribution of nanocrystals in AlCoCrCuFeNi1.5 and AlCoCrCuFeNi1.8.The Vickers hardness values of the six groups of alloys were between 355 HV to 491 HV.

关 键 词：高熵合金 微观组织 晶体结构 硬度 

分 类 号：TG113.12[金属学及工艺—物理冶金] TG113.25[金属学及工艺—金属学]