| Second phase reinforced metal-matrix composites (MMCs) have attracted researchers across fields of materials and mechanics for long time. Volume fraction, shape, size of the second phase all contribute to their reinforcement effect. In this study, we focus on one special shape, namely, cylindrical, of SiC as the reinforced phase, and aluminum as the metal matrix. A widely-used cohesive zone model, as well as a perfectly connected interface, is adopted to account for the interfacial interaction between the reinforced phase and the matrix interface. With the same volume fraction of SiC, different dimension rations are studied numerically to obtain the stress-strain relation of the SiC reinforced aluminum matrix materials. The effect of the introduction of conventional theory of mechanism-based strain-gradient plasticity (CMSG) and quench hardening is considered. |
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