论文信息 - Effects of Particle Size on the Thermal Physical Properties of SiCp/Al Composites

Effects of Particle Size on the Thermal Physical Properties of SiCp/Al Composites

The coefficients of thermal expansion (CTEs) of the 20 vol% SiCp/Al composites fabricated by powder metallurgy process were measured and examined from room temperature to 450°C The SiC particles are in three nominal sizes 5μm, 20μm and 56μm. The CTEs of the SiCp/Al composites were shown to be apparently dependent on the particle size. That the larger particle size, the higher CTEs of the composites, is thought to be due to the difference in original thermal residual stresses and matrix plasticity during thermal loading. The thermal conductivity of the composites also increases with particle size increasing.

L. Geng | Yiwu Yan

[1] C. Garcia-cordovilla,et al. Thermal expansion behaviour of aluminium/SiC composites with bimodal particle distributions , 2003 .

[2] Byung Gon Kim,et al. Effects of thermal processing on thermal expansion coefficient of a 50 vol.% SiCp/Al composite , 2001 .

[3] A. Mortensen,et al. Thermal expansion responses of pressure infiltrated SiC/Al metal-matrix composites , 1997 .

[4] A. Giannakopoulos,et al. Elastoplastic analysis of thermal cycling: Ceramic particles in a metallic matrix , 1995 .

[5] K. Chawla,et al. Effect of particle size on the thermal expansion of XD™ composites , 1994 .

[6] A. Needleman,et al. Coefficients of thermal expansion of metal-matrix composites for electronic packaging , 1994 .

[7] D. Hasselman,et al. Effect of Reinforcement Particle Size on the Thermal Conductivity of a Particulate‐Silicon Carbide‐Reinforced Aluminum Matrix Composite , 1992 .

[8] A. Mortensen,et al. Structure and room-temperature deformation of alumina fiber-reinforced aluminum , 1992 .

[9] R. Arsenault,et al. Dislocation generation due to differences between the coefficients of thermal expansion , 1986 .

[10] M. Flemings,et al. Thermal expansion behavior of silver matrix composites , 2000 .