Microstructure and mechanical performance of new Al0.5CrFe1.5MnNi0.5 high-entropy alloys improved by plasma nitriding

被引：49
作者：
Tang, Wei-Yeh [1 ]
Chuang, Ming-Hao [1 ]
Chen, Hsuan-You [1 ]
Yeh, Jien-Wei [1 ]
机构：
[1] Natl Tsing Hua Univ, Dept Mat Sci & Engn, Hsinchu 300, Taiwan
来源：
SURFACE & COATINGS TECHNOLOGY | 2010年 / 204卷 / 20期
关键词：
High-entropy alloys; Plasma nitriding; rho Phase; Sliding wear; WEAR-RESISTANCE; SYSTEM; FCC;
D O I：
10.1016/j.surfcoat.2010.02.045
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Effects of plasma nitriding at 525 degrees C on microstructure and mechanical performance of a brand-new Al0.5CrFe1.5MnNi0.5 high-entropy alloy (HEA) were investigated. This alloy exhibits a large age hardening effect at temperatures from 600 to 800 degrees C and can be well-nitrided in the as-cast condition or the homogenized and furnace-cooled state. The nitrided layer has a thickness around 75 mu m and a peak hardness level of Hv 1250 near the surface. The nitrided Al0.5CrFe1.5MnNi0.5 alloys exhibit superior adhesive wear resistance to conventional nitrided steels by 25-54 times due to their much thicker highly-hardened layer and higher peak hardness than that of conventional steels. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：3118 / 3124
页数：7
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