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Equal channel angular pressing of metal matrix composites: effect on particle distribution and fracture toughness

Sabirov, Ilchat, Kolednik, O., Valiev, R. and Pippan, R. 2005, Equal channel angular pressing of metal matrix composites: effect on particle distribution and fracture toughness, Acta materialia, vol. 53, no. 18, pp. 4919-4930.

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Title Equal channel angular pressing of metal matrix composites: effect on particle distribution and fracture toughness
Author(s) Sabirov, Ilchat
Kolednik, O.
Valiev, R.
Pippan, R.
Journal name Acta materialia
Volume number 53
Issue number 18
Start page 4919
End page 4930
Publisher Elsevier Science
Place of publication Tarrytown, N.Y.
Publication date 2005-10
Keyword(s) metal matrix composites
powder metallurgy
equal channel angular pressing
particle distribution
fracture toughness
Summary An Al6061-20%Al2O3 powder metallurgy (PM) metal matrix composite (MMC) with a strongly clustered particle distribution is subjected to equal channel angular pressing (ECAP) at a temperature of 370 °C. The evolution of the homogeneity of the particle distribution in the material during ECAP is investigated by the quadrat method. The model proposed by Tan and Zhang [Mater Sci Eng 1998;244:80] for estimating the critical particle size which is required for a homogeneous particle distribution in PM MMCs is extended to the case of a combination of extrusion and ECAP. The applicability of the model to predict a homogeneity of the particle distribution after extrusion and ECAP is discussed. It is shown that ECAP leads to an increase of the  uniformity of the particle distribution and the fracture toughness.
Language eng
Field of Research 091202 Composite and Hybrid Materials
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2005, Acta Materialia Inc.
Persistent URL http://hdl.handle.net/10536/DRO/DU:30004411

Document type: Journal Article
Collection: Centre for Material and Fibre Innovation
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