Al/TiC composites produced by melt infiltration
Authors: Muscat, D.; Shanker, K.; Drew, R. A. L.
Source: Materials Science and Technology, Volume 8, Number 11, November 1992 , pp. 971-976(6)
Publisher: Maney Publishing
Abstract:An Al/TiC composite has been developed using a melt infiltration technique. Green preforms of TiC were partially sintered to densities ranging from 50 to 85%. They were then infiltrated with molten aluminium in argon at atmospheric pressure, at temperatures ranging from 950 to 1350°C. The variations in mechanical properties of this composite material with ceramic content and fabrication conditions are presented and the resulting microstructures are discussed. The composite exhibited excellent tensile strength values of ~475 MN m−2 and up to 5% elongation. Fracture behaviour mechanisms are also described in relation to the stress–strain curves. High infiltration temperatures were found to be detrimental to the mechanical properties since the TiC particle network, which formed during sintering, was broken down by the metallic phase.
Document Type: Research Article
Publication date: 1992-11-01
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