Elsevier

Scripta Materialia

Volume 59, Issue 2, July 2008, Pages 199-202
Scripta Materialia

Effect of SiC particles on the laser sintering of Al–7Si–0.3Mg alloy

https://doi.org/10.1016/j.scriptamat.2008.03.007Get rights and content

The direct laser sintering of Al–7Si–0.3Mg/SiC composites was studied. It is shown that the densification rate obeys first-order kinetics. The rate constant is found to increase at low SiC fractions but abruptly decreases at >∼5 vol.%. In the presence of ceramic particles, the melt track becomes more stable and a more continuous sintered surface is obtained. Meanwhile, significant reaction occurs between the aluminum melt and the reinforcement particles, leading to formation of Al4SiC4 and silicon particles. The solidification microstructure is also altered.

References (25)

  • D.M. Liu et al.

    Scripta Mater.

    (2007)
  • D. Gu et al.

    Mater. Sci. Eng. A

    (2006)
  • A. Gåård et al.

    J. Alloy Comp.

    (2006)
  • C.C. Leong et al.

    Mater. Sci. Eng. A

    (2002)
  • K.H. Tan et al.

    Biomaterials

    (2003)
  • I. Shishkovsky et al.

    Appl. Surface Sci.

    (2007)
  • T. Fan et al.

    Mater. Sci. Eng. A

    (2005)
  • A. Simchi

    Mater. Sci. Eng. A

    (2006)
  • R. Anandkumar et al.

    Surface Coat. Technol.

    (2007)
  • H.J. Niu et al.

    Scripta Mater.

    (1999)
  • M. Grujicic et al.

    Appl. Surface Sci.

    (2001)
  • A. Grabowski et al.

    Opt. Lasers Eng.

    (2005)
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