Size-Dependent Strengthening of Particle-Reinforced Aluminum Matrix Composites

摘要

Finite-element-based microstructural modeling technique developed by Suhet al. (Suh, Y. S.; Joshi, S. P.; Ramesh, K. T. Acta. Mater. 2009, 57, 5848) was reviewed and used for studying the different responses betweenisotropic and anisotropic aluminum matrix with varying particle sizes. The results show that the overall response of the material was identicalwhen the matrix material was changed from isotropic-elastic/plastic aluminum to anisotropic-elastic/ isotropic-plastic aluminum, especially for the 5% volume fraction. However, the anisotropic-elastic/ isotropic-plastic aluminum exhibited a lower elasticmodulus than that of the isotropic-elastic/ plastic-aluminum. Also, the flow stresses were lower for anisotropic-elastic/ isotropicplastic aluminum for the 20% volume fraction.