Characterization of iron aluminides formed in situ in an aluminium matrix composite

被引：6

作者：

Olszowka-Myalska, Anita ^{[1
]}

Szala, Janusz ^{[1
]}

Cwajna, Jan ^{[1
]}

机构：

[1] Silesian Tech Univ, PL-40019 Katowice, Poland

来源：

MATERIALS CHARACTERIZATION | 2006年 / 56卷 / 4-5期

关键词：

aluminium matrix composites; iron aluminides; quantitative metallography;

D O I：

10.1016/j.matchar.2005.12.014

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The application of quantitative metallography to the description of in Situ formation of reinforcement in composites is presented. The dispersion of iron aluminides, formed from iron powder in all aluminium matrix during hot pressing in vacuum, was analyzed on images from a scanning electron microscope. It was found that the dispersion of a new phase formed at a temperature of 630 degrees C depended on the initial composition mixture of metal powders and time of pressing. Iron aluminides were formed by two mechanisms: by a regular diffusional growth and by self-propagating high-temperature synthesis (SHS). In the case of the formation of particles by the SHS mechanism, two types of very fine iron alunimides were noticed. They differed in size and shape. (c) 2006 Elsevier Inc. All rights reserved.

引用

页码：379 / 383

页数：5

共 8 条

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