Crack and wear behavior of SiC particulate reinforced aluminium based metal matrix composite fabricated by direct metal laser sintering process

被引：148

作者：

Ghosh, Subrata Kumar ^{[1
]}

Saha, Partha ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Mech Engn, Kharagpur 721302, W Bengal, India

来源：

MATERIALS & DESIGN | 2011年 / 32卷 / 01期

关键词：

Al-based metal matrix composite; Direct metal laser sintering; Wear; DRY SLIDING WEAR; GRAPHITE POWDER MIXTURE; ABRASIVE WEAR; ELEVATED-TEMPERATURES; ALLOY; MECHANISM; COATINGS; MODEL; MMCS;

D O I：

10.1016/j.matdes.2010.06.020

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this investigation, crack density and wear performance of SiC particulate (SiCp) reinforced Al-based metal matrix composite (Al-MMC) fabricated by direct metal laser sintering (DMLS) process have been studied. Mainly, size and volume fraction of SiCp have been varied to analyze the crack and wear behavior of the composite. The study has suggested that crack density increases significantly after 15 volume percentage (vol.%) of SiCp. The paper has also suggested that when size (mesh) of reinforcement increases, wear resistance of the composite drops. Three hundred mesh of SiCp offers better wear resistance: above 300 mesh the specific wear rate increases significantly. Similarly, there has been no improvement of wear resistance after 20 vol.% of reinforcement. The scanning electron micrographs of the worn surfaces have revealed that during the wear test SiCp fragments into small pieces which act as abrasives to result in abrasive wear in the specimen. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：139 / 145

页数：7

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