Paper Title:
Effects of Particle Size on Microstructure of the Matrix Alloy in Aluminum Matrix Composites
  Abstract

Aluminum matrix composites, reinforced by 0.15μm and 5μm Al2O3 particles with 40% volume fractions were fabricated by squeeze casting technique. The microstructure characterization near the interfaces of Al2O3p/1070Al composites was investigated by SADP and HREM techniques. Results showed that high-density dislocations were generated in the 5μm-Al2O3p/Al composite due to the thermal mismatch stress. In contrast, the matrix of the 0.15μm-Al2O3p/Al composite appeared to be nearly free dislocations and some “micro distortion areas” of 1-5nm were observed, which was attributed to the dispersion of fine sub-micron particles and uniform distribution of the stress near the interfaces.

  Info
Periodical
Materials Science Forum (Volumes 546-549)
Edited by
Yafang Han et al.
Pages
1655-1659
DOI
10.4028/www.scientific.net/MSF.546-549.1655
Citation
L. T. Jiang, G. H. Wu, M. Zhao, Q. Zhang, N. Kouno, H. Saito, "Effects of Particle Size on Microstructure of the Matrix Alloy in Aluminum Matrix Composites", Materials Science Forum, Vols. 546-549, pp. 1655-1659, 2007
Online since
May 2007
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$32.00
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