Tribological Behavior of Annealed Ni-xFe-yCo Alloys: Effect of Co and Fe Additions

被引：0
|
作者：
Ntholeng, Nthabiseng [1 ]
Mphasha, Nthape Percyval [2 ,3 ]
Bopape, Itshepeng Mogaleadi Christinah [1 ]
Ogunmuyiwa, Enoch Nifise [4 ]
Shongwe, Mxolisi Brendon [1 ]
机构：
[1] Tshwane Univ Technol, Dept Chem, Met & Mat Engn, ZA-0001 Pretoria, South Africa
[2] Univ Witwatersrand, Sch Chem & Met Engn, ZA-2025 Johannesburg, South Africa
[3] Univ Witwatersrand, Acad Dev Unit, ZA-2025 Johannesbug, South Africa
[4] Botswana Int Univ Sci & Technol, Dept Chem Mat & Met Engn, Palapye, Botswana
来源：
JOURNAL OF TRIBOLOGY-TRANSACTIONS OF THE ASME | 2023年 / 145卷 / 02期
基金：
新加坡国家研究基金会;
关键词：
Ni-based alloys; annealing; microstructure; mechanical properties; wear behavior; friction; sliding; surface properties and characterization; wear mechanisms; HIGH-ENTROPY ALLOYS; DRY SLIDING WEAR; MICROSTRUCTURAL EVOLUTION; MATRIX COMPOSITES; HEAT-TREATMENT; NICKEL; GRAPHITE; FRICTION; IRON;
D O I：
10.1115/1.4055997
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The influence of annealing on the microstructure, mechanical and sliding wear characteristics of Ni-based alloys produced by spark plasma sintering (SPS) was investigated. As-sintered alloys had a lamellar-like microstructure consisting of (gamma')-FeNi3 and gamma-(NiFe) phases blended together. Lower Co contents (i.e., 30, 35 wt%) led to the formation of poorly bonded coarse gamma precipitate islands. Annealed Ni-5Fe-45Co alloy exhibited the most excellent wear performance with the lowest coefficients of friction (0.142 & PLUSMN; 0.05) and wear-rate (0.3 +/- 0.02 x 10(-4) mm(3)/Nm). Annealing resulted in alloys with good strength-ductility combinations due to appreciable gamma & PRIME; precipitation enhancement.
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页数：11
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