Microstructure and Mechanical Properties of CrxCuFe2Mo0.5Nb0.5Ni2 High Entropy Alloys

Ren Bo; Guo Peng; Zhao Ruifeng; Teng Yingyao; Guan Shaokang; Zhang Hongsong

doi:10.15980/j.tzzz.2014.06.003

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Microstructure and Mechanical Properties of Cr_xCuFe₂Mo_0.5Nb_0.5Ni₂ High Entropy Alloys
Vol. 34, Issue 6, Pages: 565-569(2014)
Published： 2014 ，
DOI： 10.15980/j.tzzz.2014.06.003

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[1]任波,郭鹏,赵瑞锋,滕瑛瑶,关绍康,张红松.Cr_xCuFe_2Mo_(0.5)Nb_(0.5)Ni_2高熵合金的微观组织与力学性能[J].特种铸造及有色合金,2014,34(06):565-569.

Ren Bo, Guo Peng, Zhao Ruifeng, et al. Microstructure and Mechanical Properties of Cr_xCuFe₂Mo_0.5Nb_0.5Ni₂ High Entropy Alloys. [J]. Special Casting & Nonferrous Alloys 34(6):565-569(2014)
[1]任波,郭鹏,赵瑞锋,滕瑛瑶,关绍康,张红松.Cr_xCuFe_2Mo_(0.5)Nb_(0.5)Ni_2高熵合金的微观组织与力学性能[J].特种铸造及有色合金,2014,34(06):565-569. DOI： 10.15980/j.tzzz.2014.06.003.

Ren Bo, Guo Peng, Zhao Ruifeng, et al. Microstructure and Mechanical Properties of Cr_xCuFe₂Mo_0.5Nb_0.5Ni₂ High Entropy Alloys. [J]. Special Casting & Nonferrous Alloys 34(6):565-569(2014) DOI： 10.15980/j.tzzz.2014.06.003.

摘要

采用电弧熔炼工艺制备了CrxCuFe2Mo0.5Nb0.5Ni2（x=0

0.5

1.0

2.0

摩尔比）高熵合金

采用X射线衍射分析（XRD）、扫描电镜（SEM）和显微硬度计对合金的物相结构、微观组织形貌、元素分布和硬度进行了分析。结果表明

合金物相主要由面心立方固溶体相（FCC）、体心立方固溶体相（BCC）和密排六方固溶体相（HCP）组成。Cr含量的增加

有利于BCC相的形成。合金组织主要呈树枝晶和枝晶间结构组成。合金中Nb、Mo和Cu元素分别偏聚于枝晶和枝晶间区域

Fe、Cr和Ni元素的分布相对均匀。合金硬度随Cr含量的增加而逐渐增加

但增幅较小。

Abstract

The CrxCuFe2Mo0.5Nb0.5Ni2（x=0

0.5

1.0

2.0

mol）high entropy alloys were prepared by arc melting process.The phase

microstructure

element distribution and hardness of the alloys were characterized by X-ray diffraction（XRD）

scanning electron microscopy（SEM）and digital display Vickers hardness tester.The results show that the alloys are composed of a mixed structure of FCC

BCC and HCP solid solutions.The increase of Cr content is beneficial for the formation of BCC phase.The microstructure of the alloys is mainly characterized by a dendrite and interdendrite structure.The Nb

Mo and Cu are mostly segregated in dendrite and interdendrite regions

respectively

while the Fe

and Ni are homogeneously distributed in the alloys.The hardness has a slight increase with the increase of Cr content.