Laser Surface Treatment and Modification of Aluminum Alloy Matrix Composites

被引：10

作者：

Abbass M.K. ^{[1
]}

机构：

[1] Department of Production Engineering and Metallurgy, University of Technology, Baghdad

来源：

Lasers in Manufacturing and Materials Processing | 2018年 / 5卷 / 2期

关键词：

Al-matrix composites; Laser surface treatment; Microstructure; Wear resistance;

D O I：

10.1007/s40516-018-0054-6

中图分类号：

学科分类号：

摘要：

The present work aimed to study the laser surface treatment and modification of Al-4.0%Cu-1.0%Mg alloy matrix composite reinforced with 10%SiC particles produced by stir casting. The specimens of the base alloy and composite were irradiated with an Nd:YAG laser of 1000 mJ, 1064 nm and 3 Hz. Dry wear test using the pin-on –disc technique at different sliding times (5–30 min) at a constant applied load and sliding speed were performed before and after laser treatment. Micro hardness and wear resistance were increased for all samples after laser hardening treatment. The improvement of these properties is explained by microstructural homogenization and grain refinement of the laser treated surface. Modification and refinement of SiC particles and grain refinement in the microstructure of the aluminum alloy matrix (α-Al) were observed by optical and SEM micrographs. The highest increase in hardness was 21.4% and 26.2% for the base alloy and composite sample respectively. © 2018, Springer Science+Business Media, LLC, part of Springer Nature.

引用

页码：81 / 94

页数：13

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