摘要
采用粉末冶金方法制备AlNiCrFexMo0.2CoCu(x=0.5,1.0,1.5,2.0)高熵合金,研究Fe元素对合金组织和性能的影响。对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相组成,当x=2.0时,合金只有bcc和fcc两相。4种合金硬度随着Fe含量的增加而降低,当x=0.5时,布氏硬度为3170MPa,x=2.0时,布氏硬度为2290MPa。对合金进行压缩实验发现,断裂强度均超过1100MPa,且具有较好的塑性。
AlNiCrFexMo0.2CoCu （x=0.5, 1.0, 1.5 2.0） high entropy alloys were prepared by the method of powder metallurgy. Effects of Fe content on microstructure, hardness and comprehensive mechanical properties were investigated. The XRD results show that constituent phases change from bcc＋fcc＋ σ at x=0.5 to bcc＋fcc at x=2.0. The hardness of the alloys varies from HBW3170 MPa at x=0.5 to HBW2290 MPa at x=2.0. The fracture strengths of all the AlNiCrFe x Mo 0.2 CoCu alloys are higher than 1100 MPa, and have a good plasticity.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2013年第6期1127-1129,共3页
Rare Metal Materials and Engineering
关键词
高熵合金
粉末冶金
密度
硬度
压缩性能
high entropy alloy
powder metallurgy
density
hardness
compression mechanical properties
