Title: Temperature Effect Research on Meso-Damage for Particle Reinforced Aluminum Matrix Composites
Abstract: Macro-mechanical properties were closely related with the meso-damage mechanism of SiC particle reinforced aluminum matrix composites(SiCp/A356).As the temperature increased,the mechanical properties of the composites decreased significantly,and the meso-damage mechanism of the composites became different at various temperatures.The temperature effect on meso-damage for 20vol% SiCp/A356 was studied,and SiCp/A356 was fabricated by means of the double stir casting method under vacuum in this paper.The diverse crack initiation and propagation behaviors were observed by using an S-250MK3 scanning electron microscope (SEM) on the fractured surfaces.According to the different failure mechanism at various temperatures,the relation curve between meso-demage behavior and temperature was presented.It can be concluded that the crack initiation mechanism of the composites at room temperature was mainly tear of the matrix and fracture of SiC particles,while the mechanism of the composites at high temperatures was SiC particle debonding from the matrix and tear of the matrix.
Publication Year: 2010
Publication Date: 2010-01-01
Language: en
Type: article
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