Effects of Si on Microstructure and Mechanical Properties of FeMoCrVTiSi<sub>x</sub> High Entropy Alloy

Xue Yanjun; Yu Wenchao; Wang Maoqiu; Shi Jie

doi:10.15980/j.tzzz.2020.01.027

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Effects of Si on Microstructure and Mechanical Properties of FeMoCrVTiSi_x High Entropy Alloy
Vol. 40, Issue 1, Pages: 112-116(2020)
Published： 2020 ，
DOI： 10.15980/j.tzzz.2020.01.027

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[1]薛彦均,尉文超,王毛球,时捷.Si对FeMoCrVTiSi_x高熵合金组织和力学性能的影响[J].特种铸造及有色合金,2020,40(01):112-116.

Xue Yanjun, Yu Wenchao, Wang Maoqiu, et al. Effects of Si on Microstructure and Mechanical Properties of FeMoCrVTiSi_x High Entropy Alloy. [J]. Special Casting & Nonferrous Alloys 40(1):112-116(2020)
[1]薛彦均,尉文超,王毛球,时捷.Si对FeMoCrVTiSi_x高熵合金组织和力学性能的影响[J].特种铸造及有色合金,2020,40(01):112-116. DOI： 10.15980/j.tzzz.2020.01.027.

Xue Yanjun, Yu Wenchao, Wang Maoqiu, et al. Effects of Si on Microstructure and Mechanical Properties of FeMoCrVTiSi_x High Entropy Alloy. [J]. Special Casting & Nonferrous Alloys 40(1):112-116(2020) DOI： 10.15980/j.tzzz.2020.01.027.

摘要

采用真空电弧熔炼工艺制备了FeMoCrVTiSi

（x=0、0.3、0.5、1）高熵合金

利用X射线衍射仪、扫描电镜、显微硬度计、万能试验机等设备研究了合金的组织和力学性能。结果表明

x=0时

合金由单一BCC固溶结构组成

随着Si含量增加

合金中逐渐析出（MoCrV）

Si相和（FeCrVSi）

（MoTi）的Laves相

x=1时

Laves相成为主相。随着Si含量增加

合金脆性随之增加

硬度（HV）也呈上升趋势

在x=1时达到最大值1 113。

Abstract

High-entropy alloy FeMoCrVTiSi

（x=0

0.3

0.5

1）was prepared by vacuum arc melting process.The microstructure and mechanical properties of the alloy prepared were investigated by X-ray diffraction（XRD）

scanning electron microscope（SEM）

microhardness tester and universal testing machine.The results reveal that the alloy consists of a single BCC solid solution structure with x=0.With the increase of Si

the（MoCrV）

Si phase and the（FeCrVSi）

（MoTi）Laves phase can be precipitated gradually in the alloy

and Laves phase is dominated in the alloy with x=1.With the increase of Si

the brittleness of the alloy is enhanced

and the hardness is increased

reaching a maximum value of 1 113 HV when x=1.