The microstructure and mechanical properties of an Al-CuO in-situ composite produced using friction stir processing

被引：52

作者：

You, G. L. ^{[1
]}

Ho, N. J. ^{[1
]}

Kao, P. W. ^{[1
]}

机构：

[1] Natl Sun Yat Sen Univ, Ctr Nanosci & Nanotechnol, Dept Mat & Optoelect Sci, Kaohsiung 804, Taiwan

来源：

MATERIALS LETTERS | 2013年 / 90卷

关键词：

Metallic composites; Electron microscopy; Friction stir processing;

D O I：

10.1016/j.matlet.2012.09.028

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Friction stir processing (FSP) was applied to produce aluminum based in situ composite from powder mixtures of Al-CuO. Fabricating the in-situ composite required combining the hot working nature of FSP and the exothermic reaction that occurs between aluminum and CuO. The reinforcements in the composite include nanometer-sized Al2O3 and Al2Cu particles. These Al2O3 nanoparticles were present in the form of clusters, which were identified as amorphous in the FSPed specimen. The average Al grain size in the FSPed composite was approximately 1 mu m. The composite exhibited superior strength and ductility. The major contributions to the high strength of the composite are the ultrafine grained structure of aluminum matrix and the fine dispersion of nanometer-size reinforcing particles inside aluminum grains. (c) 2012 Elsevier B.V. All rights reserved.

引用

页码：26 / 29

页数：4

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