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Laser processing of an aluminium AA6061 alloy involving injection of SiC particulate

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Abstract

In the present laser processing work, the powder injection technique was investigated as a method for producing a surface metal matrix composite (MMC) containing large SiC particulates (SiCp) (105–150 μm). This size is known to enhance the wear resistance of bulk aluminium-based composites. The effects of the laser-processing conditions, the powder feeding rate and the surface situations necessary to produce a well incorporated MMC on the surface were studied, and the microstructure examined. In previous work, laser processing involving the preplacement of SiCp was developed to create an AI-SiCp (≤45 μm) MMC layer on aluminium alloy surfaces. Some of these ideas were used in conjunction with the injection process in the present work to enhance the surface-wear resistance. The wear resistance of an MMC obtained by a single laser track with the injection technique was determined and compared with the base alloy and the MMC layer produced by the preplacement technique.

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Authors and Affiliations

  1. Department of Metallurgy and Engineering Materials, University of Strathclyde, G1 1XN, Glasgow, UK

    C. Hu, H. Xin & T. N. Baker

Authors
  1. C. Hu
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  2. H. Xin
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  3. T. N. Baker
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Hu, C., Xin, H. & Baker, T.N. Laser processing of an aluminium AA6061 alloy involving injection of SiC particulate. J Mater Sci 30, 5985–5990 (1995). https://doi.org/10.1007/BF01151516

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  • DOI: https://doi.org/10.1007/BF01151516

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