A modified preparation technique and characterization of directionally solidified Al2O3/Y3Al5O12 eutectic in situ composites

被引：44

作者：

Su, Haijun ^{[1
]}

Zhang, Jun ^{[1
]}

Deng, Yangfang ^{[1
]}

Liu, Lin ^{[1
]}

Fu, Hengzhi ^{[1
]}

机构：

[1] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Peoples R China

来源：

SCRIPTA MATERIALIA | 2009年 / 60卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Al2O3/Y3Al5O12; Eutectic in situ composite; Directional solidification; Electron beam floating zone melting; MECHANICAL-PROPERTIES; HIGH-STRENGTH; MICROSTRUCTURE; GROWTH; BEHAVIOR; MELT;

D O I：

10.1016/j.scriptamat.2008.11.010

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Generally, the electron beam floating zone melting (EBFZM) technique can only be used for preparing conductive materials but is not available for nonconductive ones. In this paper, a modified EBFZM technique has been developed to prepare directionally solidified Al2O3/Y3Al5O12 eutectic in situ composites (nonconductive materials). The eutectic obtained shows Ultra-fine interphase spacing with complex network structure and the irregular growth mechanism is investigated. Additionally, two new microstructures With regular growth morphology are observed and their formations are discussed. (c) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：362 / 365

页数：4

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