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Effects of beta-Si3N4 whiskers addition on mechanical properties and tribological behaviors of Al matrix composites
Zhang, Chenxu; Yao, Dongxu; Yin, Jinwei; Zuo, Kaihui; Xia, Yongfeng; Liang, Hanqin; Zeng, Yu-Ping
2019-07-15
Source PublicationWEAR
ISSN0043-1648
Volume430Pages:145
SubtypeArticle
Abstractbeta-Si3N4 whiskers reinforced Al matrix composites were prepared by hot pressing. The effect of beta-Si3N4 whiskers addition on the microstructure, mechanical properties and tribological behaviors of composites were investigated. The dry sliding wear test was conducted with a sliding speed of 0.5 m/s, at different applied load of 10, 20 and 40 N, respectively. The Vickers hardness, ultimate compression strength (UCS) and the wear resistance of Al matrix were enhanced significantly with the addition of whiskers. As the increase in whisker content, there was a clear transfer of wear mechanism from the combination of serious delamination wear and abrasive wear to the mild abrasive wear at the 20 N applied load condition. The composites reinforced with 15 vol% whiskers exhibited the best wear resistance under higher applied load. The mechanically mixed layer (MML) formed during sliding had a protective effect on the worn surface. Higher mechanical properties of composites and lower applied load helped to keep the MML stable. The slighter the wear degree of composites is, the lower the coefficient of friction is.
KeywordMetal matrix composites beta-Si3N4 whiskers Tribological behaviors Wear mechanism Mechanically mixed layer
DOI10.1016/j.wear.2019.05.003
Language英语
WOS Research AreaEngineering ; Materials Science
PublisherELSEVIER SCIENCE SA
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/26976
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Zhang, Chenxu,Yao, Dongxu,Yin, Jinwei,et al. Effects of beta-Si3N4 whiskers addition on mechanical properties and tribological behaviors of Al matrix composites[J]. WEAR,2019,430:145.
APA Zhang, Chenxu.,Yao, Dongxu.,Yin, Jinwei.,Zuo, Kaihui.,Xia, Yongfeng.,...&Zeng, Yu-Ping.(2019).Effects of beta-Si3N4 whiskers addition on mechanical properties and tribological behaviors of Al matrix composites.WEAR,430,145.
MLA Zhang, Chenxu,et al."Effects of beta-Si3N4 whiskers addition on mechanical properties and tribological behaviors of Al matrix composites".WEAR 430(2019):145.
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