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Proceedings Paper

Microstructure of a laser-surface-melted SiC-particle-reinforced aluminum metal matrix composite
Author(s): A. Shaban; Wen Q. Hong; L. G. Yu; Hua Ming Wang
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Paper Abstract

A SiC particle reinforced aluminum matrix composite (SiCp/Al composite) is melted by a high power continuous wave CO2 laser. Microstructure of the laser melted SiCp/Al MMC is studied as functions of laser processing parameters. The silicon carbide particles are completely dissolved during laser surface melting and aluminum silicon carbide Al4SiC4, aluminum carbide Al4C3, and primary silicon particles are produced in the laser melted surface. The size and volume fraction of the newly formed phases depend on the processing conditions. The relative volume fraction of Al4SiC4 to Al4C3 is strongly dependent on the laser linear energy density, a higher linear energy density leading to more Al4SiC4 formation. Result of anodic polarization corrosion test indicates that the corrosion resistance of the SiCp/Al MMC is not improved after laser surface melting.

Paper Details

Date Published: 8 September 1999
PDF: 5 pages
Proc. SPIE 3862, 1999 International Conference on Industrial Lasers, (8 September 1999); doi: 10.1117/12.361123
Show Author Affiliations
A. Shaban, Beijing Univ. of Aeronautics and Astronautics (China)
Wen Q. Hong, Beijing Univ. of Aeronautics and Astronautics (China)
L. G. Yu, Beijing Univ. of Aeronautics and Astronautics (China)
Hua Ming Wang, Beijing Univ. of Aeronautics and Astronautics (China)

Published in SPIE Proceedings Vol. 3862:
1999 International Conference on Industrial Lasers
Fuxi Gan; Horst Weber; Zaiguang Li; Qingming Chen, Editor(s)

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