CHANGEMENTS DE PHASES ET MICROSTRUCTURES
J. Phys. IV France 04 (1994) C3-251-C3-256
Etude structurale du système ternaire Al/Si/C par mécanosynthèseA. MALCHÈRE and E. GAFFET
I.S.I.T.E.M. - C.N.R.S., Groupe Elaboration et Transitions de Phases loin de 1'Equilibre La Chantrerie, Rue C. Pauc, CP. 3023, 44087 Nantes cedex 03, France
Solid phase method is preferred to elaborate metal matrix composite rather than liquid one, in order to avoid problems like an heterogeneous distribution of reinforcements, a bad wetting of the latter. This study states about the experimental conditions to obtain an Al/SiCp composite with a Mechanical Alloying process, starting from the pure elements Al, Si, C. The Al/SiCp powder composite could not be created from a single energetic milling of the elements Al, Si, C, which would have reduced the number of preparation stages. Nevertheless, by an other way, consisting of a two stages mechanical alloying, a composite constituted with the aluminium matrix, a [MATH] phase, and an amorphous phase has been formed.
© EDP Sciences 1994