Matrix grain refinement in Al-TiAl composites by severe plastic deformation: Influence of particle size and processing route

被引：31

作者：

Munoz-Morris, M. A. ^{[1
]}

Calderon, N. ^{[1
]}

Gutierrez-Urrutia, I. ^{[1
]}

Morris, D. G. ^{[1
]}

机构：

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

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2006年 / 425卷 / 1-2期

关键词：

equal channel angular pressing; grain refinement; metal-intermetallic composites; mechanical strength;

D O I：

10.1016/j.msea.2006.03.027

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The microstructure and mechanical behaviour of Al-based composites reinforced with TiAl intermetallic particles has been examined in the as-extruded state and after processing by equal channel angular pressing (ECAP). The latter produces a grain size reduction in the aluminium matrix to values of 500 nm, using route A, and 750 nm, using route C. The ECAP produces up to a 75% increase in the yield stress of the composites, being more rapid when route A is used. The strengthening effect by ECAP is much larger than that obtained by increasing the volume fraction of reinforcement particles from 25 to 50% in these composites. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：131 / 137

页数：7

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