TWA 15

Metal Matrix Composites

Existing experimental testing procedures for metal matrix composites (MMCs) were not well developed or documented. There was a lack of analytical material models to describe mechanical behaviour which was necessary for component design. During the formation of this TWA in 1992, a survey of interested participants revealed a strong consensus that the activities should address testing of discontinuously reinforced aluminum matrix composites (DRA) because of availability of material and worldwide efforts to commercialise the material. The materials selected for the initial phase were whisker reinforced DRA and particulate reinforced DRA.

Ambient and elevated temperature tensile and fatigue tests were carried out on both whisker material and the particulate reinforced material.

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