Effect of coating Al2O3 reinforcing particles on the interface and mechanical properties of 6061 alloy aluminium matrix composites

被引：30
|
作者：
Yu, ZQ [1 ]
Wu, GH [1 ]
Jiang, LT [1 ]
Sun, DL [1 ]
机构：
[1] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China
来源：
MATERIALS LETTERS | 2005年 / 59卷 / 18期
基金：
中国国家自然科学基金;
关键词：
rare-earth oxide coating; alumina powders; interface; mechanical property; aluminum matrix composite;
D O I：
10.1016/j.matlet.2004.06.080
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A Y2O3 coating on alpha-Al2O3 powder produced by liquid-phase coating method was used to modify the interfacial properties of squeeze-casting Al2O3 powder reinforced 6061Al composites. Interface observations and analysis indicated that Y2Al was generated on the interfaces by interfacial reaction. The interface produced was clear and bonded well. The mechanical properties of the coated Al2O3p/6061Al composites were better than those produced with uncoated particles. In the composite with 30% volume fraction, the yield strength and ultimate tensile strength increased by 33% and 27%, respectively, while the elongation increased by 12.2%. The fracture surface presents ductile fracture features. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：2281 / 2284
页数：4
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