粉末冶金制备AlNiCrFe_xMo_(0.2)CoCu高熵合金及组织和压缩性能的研究  

Microstructure and Mechanical Properties of AlNiCrFe_xMo_(0.2)CoCu High Entropy Alloys Prepared by Powder Metallurgy

作　　者：范玉虎[1] 张云鹏[1] 关红艳[1] 索会敏[1] 

机构地区：[1]西安理工大学材料科学与工程学院,陕西西安710048

出　　处：《热加工工艺》2012年第18期56-58,共3页Hot Working Technology

摘　　要：采用粉末冶金法制备了AlNiCrFexMo0.2CoCu(x=0.5、1.0、1.5、2.0)高熵合金,研究了Fe元素对该合金组织和性能的影响。对上述4种合金进行XRD分析,发现当x=0.5、1.0和1.5时,有BCC、FCC和σ相三相组成;当x=2.0时,合金只有BCC和FCC两相;该合金硬度随Fe含量的增加而降低。压缩试验表明,合金断裂强度均超过1100 MPa,且具有较好的塑性。AlNiCrFexMo0.2CoCu（x=0.5 to 2.0） high entropy alloy was prepared by powder metallurgy.The effects of Fe element on the microstructure,hardness and comprehensive mechanical properties were investigated.The XRD results show that,the constitutent phase changes from BCC＋FCC＋ σ at x=0.5 into BCC＋FCC at x=2.0,and the hardness of the four alloys decreases gradually.The fracture stength of the alloy is higher than 1100 MPa,and has a nice plasticity.

关 键 词：高熵合金 粉末冶金 组织 力学性能 

分 类 号：TG113[金属学及工艺—物理冶金]