Mechanical properties and dry-sliding tribological behavior of partially twinned Fe70Ni30 alloy

被引：10
作者：
Kang, Yonghai [1 ,2 ]
Yang, Jun [1 ]
Fu, Licai [1 ]
Bi, Qinling [1 ]
Liu, Weimin [1 ]
机构：
[1] Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China
[2] Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China
来源：
WEAR | 2012年 / 274卷
基金：
中国国家自然科学基金;
关键词：
Sliding wear; Sliding friction; Hardness; Wear testing; LENTICULAR MARTENSITE; MAXIMUM STRENGTH; WEAR BEHAVIOR; SURFACE-LAYER; DEFORMATION; NUCLEATION; BOUNDARIES; FRICTION; COPPER; BURST;
D O I：
10.1016/j.wear.2011.10.003
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The mechanical properties and wear behavior of an Fe70Ni30 alloy with twinned martensite structure obtained by deep cryogenic treatment at -196 degrees c (DCT) were evaluated in comparison with that of coarse-grained (CG) Fe70Ni30 alloy (single austenite phase). The results showed that after the introduction of martensite with nano-scale twins, the Vickers hardness of Fe70Ni30 increased from 145 to 248 Hv. The friction coefficient of both samples was almost the same, and it decreased with increasing applied load and increased with increasing sliding speed. The XPS results indicated that oxide protecting film was formed on the worn surface, which may dominate the friction coefficient. The wear rate for both samples increased with increasing applied load and decreased slightly with increasing sliding speed. The wear resistance of DCT-Fe70Ni30 alloy was obviously enhanced. The wear mechanisms were investigated by SEM accordingly. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：395 / 400
页数：6
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