Novel approach based on in situ powder metallurgy (IPM) method for embedding of SiC nanoparticles in aluminium powders

Abstract In situ powder metallurgy (IPM) is a relatively new method which has been used successfully for the production of cost effective metal matrix composites (MMCs) containing micrometre sized ceramic particles. In the present investigation, for the first time, the applicability of the IPM method in the fabrication of aluminium powders containing nanosized SiC particles was investigated. Results of SEM and TEM studies together with microhardness measurements revealed that the commercially pure Al could not embed the as received SiC particles. However, these nanosized particles were distributed uniformly in the Al–1Mg powders. These composite powder particles can be used as a feedstock for processing the nano-MMCs via standard powder metallurgy routes.

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