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Tensile Properties of Paniculate-Reinforced Metal Matrix Composites using the Homogenization Method

Quasi-static tensile tests are performed at room temperature to investigate the mechanical properties of TP-650 titanium matrix composites produced by the pre-treatment melt process (PTMP). By adopting the homogenization method for periodic microstructures, the macroscopic material parameters are identified by solving the microscopic equations. A new iteration method is presented to identify multi-particle unit cells' boundary conditions. The displacement constraint conditions are applied to the unit cell with this method. Finite element (FE) models are established and mechanical properties and fracture behaviors of the composites under tensile loading are studied numerically. A good agreement is achieved between the experimental results and the numerical predictions, revealing the reliability and effectiveness of the present theory.