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Laser Cladding Of Magnesium Alloy Az91d With Silicon Carbide

Author

Listed:
  • L. F. CAI

    (Precision Engineering and Nanotechnology Center, School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore)

  • C. K. MARK

    (Precision Engineering and Nanotechnology Center, School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore)

  • WEI ZHOU

    (Precision Engineering and Nanotechnology Center, School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore)

Abstract

Mgalloys are ultralight but their structural applications are often limited by their poor wear and corrosion resistance. The research aimed to address the problem by laser-cladding. Cladding withSiCpowder onto surface of AZ91D was carried out usingNd:YAG laser. The laser-clad surface was analyzed using the optical microscope, SEM equipped with EDS, and XRD and found to containSiCand otherSicompounds such asMg2SiandAl3.21Si0.47as well as much refined α-Mggrains and β-Mg17Al12intermetallics. The laser-clad surface possesses considerably higher hardness but its corrosion resistance is not improved, indicating that the laser-cladding technique can only be adopted for applications in noncorrosive environments where wear is the predominant problem.

Suggested Citation

  • L. F. Cai & C. K. Mark & Wei Zhou, 2009. "Laser Cladding Of Magnesium Alloy Az91d With Silicon Carbide," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 16(02), pages 215-221.
    • Handle: RePEc:wsi:srlxxx:v:16:y:2009:i:02:n:s0218625x09012512
    DOI: 10.1142/S0218625X09012512
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