Microstructure and strength of ZA-27-based composites reinforced with Al2O3 particles

被引：25

作者：

Bobic, I

Jovanovic, MT

Ilic, N

机构：

[1] Inst Nucl Sci Vinca, Dept Mat Sci, YU-11001 Belgrade, Serbia

[2] Univ Saarland, D-6600 Saarbrucken, Germany

来源：

MATERIALS LETTERS | 2003年 / 57卷 / 11期

关键词：

compocasting; semi-solid melt; Al2O3; strengthener; particle size; compression strength;

D O I：

10.1016/S0167-577X(02)01052-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Two Zn-27Al-3Cu-3Al(2)O(3) (wt.%) composites with different particle size (approximately 12 and 250 mum) of Al2O3 powder were produced by a compocasting process, i.e. Al2O3 particles were continuously added to a semi-solid melt which was vigorously stirred. Comparative investigations of microstructure [scanning electron microscope (SEM), energy dispersive spectrometry (EDS)] and compression strength (from room temperature to 170 degreesC) of as-cast alloy and composites were carried out. Composites exhibit higher strength than the as-cast alloy. The strengthening effect of smaller Al2O3 particles is more pronounced than the effect of much larger particles. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：1683 / 1688

页数：6