Wear and friction behavior of Al6061 alloy reinforced with carbon nanotubes

被引：146

作者：

Al-Qutub, A. M. ^{[1
]}

Khalil, A. ^{[1
]}

Saheb, N. ^{[1
,2
]}

Hakeem, A. S. ^{[2
]}

机构：

[1] King Fahd Univ Petr & Minerals, Dept Mech Engn, Dhahran 31261, Saudi Arabia

[2] King Fahd Univ Petr & Minerals, Ctr Excellence Nanotechnol, Dhahran 31261, Saudi Arabia

来源：

WEAR | 2013年 / 297卷 / 1-2期

关键词：

Friction; Wear; Powder processing; Metal matrix composites; DRY SLIDING WEAR; ALUMINUM-ALLOY; ABRASIVE WEAR; COMPOSITES; MICROSTRUCTURE; COEFFICIENT; PARAMETERS; RESISTANCE; STRENGTH;

D O I：

10.1016/j.wear.2012.10.006

中图分类号：

TH [机械、仪表工业];

学科分类号：

120111 [工业工程];

摘要：

Friction and wear behavior of Al6061 monolithic alloy and 1 wt% CNTs reinforced Al6061 composite prepared through ball milling and spark plasma sintering was investigated. It was found that, under mild wear conditions, the composite displayed lower wear rate and friction coefficient compared to the monolithic alloy. However, for severe wear conditions, the composite displayed higher wear rate and friction coefficient compared to the monolithic alloy. Analysis of worn surfaces revealed that, at lower loads, abrasion was the dominant wear mechanism for both materials. At higher loads, adhesion was found to be dominant for the monolithic alloy while excessive sub-surface fracturing and delamination were mainly observed for the composite. Also, it was clarified that the friction and wear behavior of Al-CNT composites is largely influenced by the applied load and there exists a critical load beyond which CNTs could have a negative impact on the wear resistance of aluminum alloy. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：752 / 761

页数：10

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