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Hot isostatic pressing synthesis and mechanical properties of Al/Al–Cu–Fe composite materials

Published online by Cambridge University Press:  31 January 2011

T. El Kabir ,
A. Joulain ,
V. Gauthier ,
S. Dubois ,
J. Bonneville  and
D. Bertheau
T. El Kabir
Affiliation:
Université de Poitiers, Laboratoire de Métallurgie Physique, Centre National de la Recherche Scientifique (CNRS)-UMR 6630, SP2MI, 86962 Fururoscope Chasseneuil, France
A. Joulain
Affiliation:
Université de Poitiers, Laboratoire de Métallurgie Physique, Centre National de la Recherche Scientifique (CNRS)-UMR 6630, SP2MI, 86962 Fururoscope Chasseneuil, France
V. Gauthier
Affiliation:
Université de Poitiers, Laboratoire de Métallurgie Physique, Centre National de la Recherche Scientifique (CNRS)-UMR 6630, SP2MI, 86962 Fururoscope Chasseneuil, France
S. Dubois
Affiliation:
Université de Poitiers, Laboratoire de Métallurgie Physique, Centre National de la Recherche Scientifique (CNRS)-UMR 6630, SP2MI, 86962 Fururoscope Chasseneuil, France
J. Bonneville*
Affiliation:
Université de Poitiers, Laboratoire de Métallurgie Physique, Centre National de la Recherche Scientifique (CNRS)-UMR 6630, SP2MI, 86962 Fururoscope Chasseneuil, France
D. Bertheau
Affiliation:
Ecole Nationale Supérieure de Mécanique et d’Aérotechnique (ENSMA), Laboratoire de Mécanique et Physique des de Matériaux, Centre National de la Recherche Scientifique (CNRS)-UMR 6617, 86961 Fururoscope Chasseneuil, France
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

Metal-matrix composites are produced from Al powder and 30 vol% of icosahedral Al–Cu–Fe quasi-crystalline particles using a hot isostatic pressing technique. It is demonstrated that the initial icosahedral phase is transformed into the ω-Al70Cu20Fe10 tetragonal phase during the hot isostatic pressing (HIP) process. The mechanical properties of the composite were evaluated over the temperature range 293 to 773 K by performing compression tests at constant strain rate. The temperature dependence of the yield stress gives evidence of two temperature regimes with a transition temperature at approximately 423 K. Strain-rate sensitivity measurements support the change in rate-controlling deformation mechanisms at this temperature. It is proposed that cross-slip and/or climb mechanism control plastic flow. Finally, it is suggested that the phase transformation of the particle contributes positively to the improvement of the mechanical properties.

Keywords

CompositeQuasi-crystalSintering
Type
Articles
Information
Journal of Materials Research , Volume 23 , Issue 4 , April 2008 , pp. 904 - 910
Copyright
Copyright © Materials Research Society 2008

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