Effect of Si addition on the microstructure and tribological properties of FeCrNi medium entropy alloy

被引：7

作者：

Zhao, Wenzhen ^{[1
]}

Zhu, Yalong ^{[1
]}

He, Huan ^{[1
]}

Xie, Zhonghao ^{[2
]}

Wang, Fengyi ^{[3
]}

Fu, Ao ^{[2
,3
]}

机构：

[1] Yantai Univ, Sch Nucl Equipment & Nucl Engn, Yantai 264005, Peoples R China

[2] Cent South Univ, State Key Lab Powder Met, Changsha 410083, Peoples R China

[3] Hubei Univ, Sch Mat Sci & Engn, Wuhan 430062, Peoples R China

来源：

JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T | 2024年 / 30卷

基金：

中国国家自然科学基金;

关键词：

High entropy alloy; Precipitate; Tribological property; Wear resistance; Mechanical property; MECHANICAL-PROPERTIES; SIGMA-PHASE; BEHAVIOR; PRECIPITATION; TEMPERATURE; STABILITY;

D O I：

10.1016/j.jmrt.2024.03.162

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

FeCrNi medium-entropy alloys (MEAs) have attracted widespread attention due to the excellent toughness and corrosion resistance, but its relatively low hardness results in poor tribological properties. Herein, a series of FeCrNiSix x MEAs (x = 0, 0.1, 0.15, and 0.2) were prepared by arc melting and their tribological behavior was systematically investigated. The results showed that Si doping promoted the precipitation of fine 6 particles in the FCC matrix, which not only enhanced the hardness, but also reduced the scratching of the wear surface by the counterpart ball. The friction coefficient and specific wear rate of the Si 0.2 MEA decreased significantly (0.53 and 5.53 x 10-4-4 mm3/(Nm)), 3 /(Nm)), which were reduced by 24% and 28%, respectively, compared with the base alloy. This study provides effective guidance for improving the wear resistance of high-performance structural materials.

引用

页码：1450 / 1457

页数：8

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