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.
| Original language | English |
|---|---|
| Pages (from-to) | 453-457 |
| Number of pages | 5 |
| Journal | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 3862 |
| DOIs | |
| State | Published - 1999 |
| Event | Proceedings of the 1999 International Conference on Industrial Lasers (IL '99) - Wuhan, China Duration: 22 Oct 1999 → 27 Oct 1999 |
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