Metal Matrix Composites: Discontinuously Reinforced, Microstructure and Mechanical Property Correlations

摘要: In discontinuously reinforced metal matrix composites, pure or alloy matrices are typically by means of particles, whiskers, and short fibers, although the use other reinforcement geometries is possible. The microstructural features characterizing a composite (DRC) have been grouped discussed as matrix, reinforcement, interface in this article. correlations between them mechanical properties composites addressed dealing with specific materials micromechanical models examples. Among material properties, focus mainly on ones. With help an example, it was shown that, since elastic modulus DRC related to well geometry, can be relatively easily predicted controlled during fabrication processing. On hand, yield strength additionally features, for grain size, thus severely affected considerably improved optimized processing steps, but cannot without taking process parameters into account. Lastly, number correlated local general rupture, such UTS, fatigue creep rupture times, onset evolution damage, damage alters load transfer conditions. Therefore, part article focuses mechanisms interesting proposed literature link features. Keywords: discontinuously composites; elastic moduli; tensile; creep; fatigue; microstructural damage; reinforcement