Prediction of Flow Behavior in the Heterogeneously Dispersed Al-10 vol%SiC Composites

Abstract

A newly developed model was proposed to predict the flow and strain-hardening behavior of the heterogeneously dispersed Al-10 vol%SiC composites with particle damage in tensile deformation. The frequency of local number of particles was decomposed into several Poisson distributions and the frequency of local number of damaged particles was approximated by one Poisson distribution. Then, the flow stress was obtained by summation of strain-hardening rate for each decomposed distribution and/or relieved stress for the distribution of damaged particles. This model gave a good agreement with the experimental results.

Image Processing Characterization of Microstructures of Al-Si Casting Alloy

“…Therefore, it is reasonable to consider mechanical properties based on mean free path of dislocation motion. We have been employed statistical approach to evaluate microstructures of metals and metal matrix composites quantitatively [7][8][9][10]. In this study, we proposed a new method to evaluate mean free path of dislocation motion by using image processing and statistical approach, and investigated relation between the mean free path and mechanical properties of Al-Si casting alloys.…”

Effect of the Interfacial Thermal Resistance on the Effective Thermal Conductivity of Aluminum Matrix Composites

“…Nowadays, high-thermal-conductivity heat-sink for the power semiconductor is demanded. Silicon-carbide particle is one of candidates as a reinforcing material because it exhibits high elastic modulus and hardness, high melting point and good thermal stability [1][2][3] . The interfacial thermal resistance between the matrix and the reinforcement is thought to have a considerable effect on the effective thermal conductivity of composites.…”