Hybrid composites - Metallic and ceramic reinforcements influence on mechanical and wear behavior

被引：38

作者：

Miranda, G. ^{[1
]}

Buciumeanu, M. ^{[2
]}

Madeira, S. ^{[1
]}

Carvalho, O. ^{[1
]}

Soares, D. ^{[1
]}

Silva, F. S. ^{[1
]}

机构：

[1] Univ Minho, Ctr Mech & Mat Technol CT2M, P-4800058 Azurem, Guimaraes, Portugal

[2] Univ Galatzi, Cross Border Fac Humanities Econ & Engn, Galati 800008, Romania

来源：

COMPOSITES PART B-ENGINEERING | 2015年 / 74卷

关键词：

Hybrid; Mechanical properties; Wear; Sintering; DRY SLIDING WEAR; ALUMINUM-MATRIX COMPOSITES; MICROSTRUCTURE; AL; TI; ALLOY; MAGNESIUM; ADDITIONS; B4C;

D O I：

10.1016/j.compositesb.2015.01.007

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This experimental study is concerned with the influence of metallic (Ti) and ceramic (SiC) reinforcements in an aluminumfsilicon (AlSi) alloy, when regarding tensile properties and wear behavior. Several micron sized particulate reinforced composites were produced by hot-pressing technique: AlSi-SiC and AlSi-Ti composites and AlSi-(Ti-SiC) hybrid composites. Regarding tensile properties, all composites presented higher ultimate tensile strength (UTS) than the AlSi matrix, with the highest UTS being attained by a hybrid composite (AlSi-11.25%Ti-5%SiC). Regarding wear behavior, reciprocating pin-on-plate wear tests were performed for unreinforced AlSi; AlSi-Ti composites and AlSi-(Ti SiC) hybrid composite against a gray cast iron (GO) counterface. The wear mechanisms for all the tested tribopairs are presented and discussed. It was observed that the wear behavior of the AlSi-Ti/GCI and also AlSi-(Ti-SiC)/GCI tribopairs are improved when compared with the AlSi/GCI system. AlSi-11.25%Ti-5%SiC hybrid composite exhibited the highest improvement in wear rate. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：153 / 165

页数：13

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