Microstructure Evolution and Wear Resistance of AlCoCrFeNiTi<sub>x</sub> High Entropy Alloys

Huang Lei; Wang Xuejie; Wang Changzheng; Yang Yuansheng

doi:10.15980/j.tzzz.2020.05.023

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Microstructure Evolution and Wear Resistance of AlCoCrFeNiTi_x High Entropy Alloys
Vol. 40, Issue 5, Pages: 562-566(2020)
Published： 2020 ，
DOI： 10.15980/j.tzzz.2020.05.023

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[1]黄蕾,王雪洁,王长征,杨院生.Ti对AlCoCrFeNiTi_x高熵合金微观组织和摩擦性能的影响[J].特种铸造及有色合金,2020,40(05):562-566.

Huang Lei, Wang Xuejie, Wang Changzheng, et al. Microstructure Evolution and Wear Resistance of AlCoCrFeNiTi_x High Entropy Alloys. [J]. Special Casting & Nonferrous Alloys 40(5):562-566(2020)
[1]黄蕾,王雪洁,王长征,杨院生.Ti对AlCoCrFeNiTi_x高熵合金微观组织和摩擦性能的影响[J].特种铸造及有色合金,2020,40(05):562-566. DOI： 10.15980/j.tzzz.2020.05.023.

Huang Lei, Wang Xuejie, Wang Changzheng, et al. Microstructure Evolution and Wear Resistance of AlCoCrFeNiTi_x High Entropy Alloys. [J]. Special Casting & Nonferrous Alloys 40(5):562-566(2020) DOI： 10.15980/j.tzzz.2020.05.023.

摘要

为揭示Ti对高熵合金微观组织演变和磨损性能的影响机理

采用非自耗真空电弧熔炼炉制备了AlCoCrFeNiTi

系高熵合金

探究其微观组织和摩擦性能。结果发现

随Ti含量增加

AlCoCrFeNiTi

系高熵合金由单一的体心立方结构（BCC）转变为两种BCC结构

合金组织形貌由树枝晶转变为花瓣状等轴晶

Al、Ni、Ti主要分布于枝晶内

而Fe、Cr主要富集于枝晶间。AlCoCrFeNiTi

0.8

合金硬度（HV）为525.2

体积磨损量为6×10

-4

具有最佳的耐磨性能。

Abstract

AlCoCrFeNiTi

（x=0

0.4

0.8

1.0） high entropy alloys（HEAs） were prepared by non-consumable vacuum arc melting furnace. The microstructure and wear resistance of the AlCoCrFeNiTi

were investigated. The experimental results reveal that high entropy alloys AlCoCrFeNiTi

are transformed from a single body-centered cubic structure（BCC） into two kinds of body-centered cubic structures with the increase of Ti content

and the morphology of alloy is transformed from dendrites into the petal-like equiaxed crystals. Meanwhile

there exists the enrichment of alloying element that Al-Ni-Ti elements are mainly distributed in dendrites

while Fe-Cr elements are mainly concentrated between dendrites. In addition

the hardness and the volume of wear resistance of the AlCoCrFeNiTi

0.8

HEAs reach 525.2 HV and 6×10

-4

indicating that AlCoCrFeNiTi

0.8

HEAs have the desirable wear resistance.

关键词

高熵合金非自耗真空电弧熔炼炉微观组织磨损性能

Keywords

High Entropy AlloysNon-consumable Vacuum Arc Melting FurnaceMicrostructureWear Resistance

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Microstructure Evolution and Wear Resistance of AlCoCrFeNiTix High Entropy Alloys

DOI： 10.15980/j.tzzz.2020.05.023

摘要

Abstract

关键词

Keywords

references

Microstructure Evolution and Wear Resistance of AlCoCrFeNiTi_x High Entropy Alloys