Volume 13, Issue 1, 2004
MECHANICAL AND TRIBOLOGICAL PROPERTIES
OF Ti 3Al
REINFORCED ALUMINIUM MATRIX COMPOSITES*
D.
Busquets-Mataix, N. Martinez, M.D. Salvador and V. Amigo
Departamento de
Ingenieria Mecanica y de Materiales. Universidad Politecnica de Valencia
Camino de Vera s/n,
46022-Valencia, Spain
(Received 7/03;
accepted 12/03)
ABSTRACT
Mechanical
properties and tribological behaviour of AA6061 and AA7015 aluminium matrix
composites reinforced with Ti 3Al
intermetallics have been studied. Processing of the composites consisted of a
combination of powder metallurgy and extrusion techniques. High tensile
strength was attained on both alloys, although composites did not improve
these properties. Also ductility was impaired on composites, but values above
10% were obtained in every case. Regarding friction coefficient, all
composites showed a lower value with respect to base alloys, being lower as
the amount of reinforcement increased. Wear behaviour of composites was
improved.
Keywords :
aluminium matrix composites, intermetallic reinforcement, mechanical
properties, tribology.
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