Title
Matrix grain refinement in Al-TiAl composites by severe plastic deformation: Influence of particle size and processing route
Date Issued
15 June 2006
Access level
open access
Resource Type
journal article
Author(s)
Muñoz-Morris M.A.
Calderón N.
Gutierrez-Urrutia I.
Morris D.G.
Publisher(s)
Elsevier BV
Abstract
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. © 2006 Elsevier B.V. All rights reserved.
Start page
131
End page
137
Volume
425
Issue
February 1
Language
English
OCDE Knowledge area
Ingeniería de materiales
Compuestos
Subjects
Scopus EID
2-s2.0-33744533598
Source
Materials Science and Engineering A
ISSN of the container
09215093
Sponsor(s)
The authors would like to thank Dr. Lieblich for her assistance with the extrusion of powders. Thanks are also due to the Spanish Ministry of Education and Science for financing this study under project number MAT2003-01540.
Sources of information:
Directorio de Producción Científica
Scopus