An analysis of strengthening mechanisms in a mechanically alloyed, oxide dispersion strengthened iron aluminide intermetallic

被引：128

作者：

Muñoz-Morris, MA ^{[1
]}

Oca, CG ^{[1
]}

Morris, DG ^{[1
]}

机构：

[1] CSIC, CENIM, Dept Met Phys, E-28040 Madrid, Spain

来源：

ACTA MATERIALIA | 2002年 / 50卷 / 11期

关键词：

intermetallic compounds; mechanical properties; dislocations; annealing;

D O I：

10.1016/S1359-6454(02)00101-5

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

An iron aluminide alloy of base composition Fe-40Al has been prepared by mechanical alloying and processed using a variety of powder consolidation methods and heat treatments to produce a range of grain sizes and oxide dispersoid sizes. The strengths of these materials have been determined at room temperature and related to the various aspects of microstructure. Fine dispersoid particles may pin grain boundaries and help determine the fine grain size and contribute very significantly to the material strength. Grain size strengthening is shown to be a rather small component of the material strength, with the matrix strength being rather high for this intermetallic. The influence of other factors such as texture and the direction of application of stress (tension or compression) are also briefly discussed. (C) 2002 Acta Materialia Inc. Published by Elsevier Science Ltd. All rights reserved.

引用

页码：2825 / 2836

页数：12

共 39 条

[1] Microstructural size effects in high-strength high-conductivity Cu-Cr-Nb alloys [J].