• Chinese Journal of Lasers
  • Vol. 34, Issue 4, 559 (2007)
[in Chinese]* and [in Chinese]
Author Affiliations
  • [in Chinese]
  • show less
    DOI: Cite this Article Set citation alerts
    [in Chinese], [in Chinese]. Microstructure and Wear Resistance of a Laser Melting-Deposited γ/NiMo Near-Eutectic Alloy[J]. Chinese Journal of Lasers, 2007, 34(4): 559 Copy Citation Text show less

    Abstract

    A γ/NiMo near-eutectic alloy mainly consisting of NiMo intermetallic compound and Ni-based solid solution γ was fabricated by laser melting deposition process using Ni-Mo elemental powder blends. Microstructure and room temperature dry sliding wear resistance of the alloy at different sliding speeds and test loads were studied. The alloy has a homogeneous microstructure and better wear resistance even at higher sliding speed and test load. Wear volume loss of the alloy is extremely insensitive to increasing wear test load at each sliding speed while coefficient of friction drastically decreases with the increase of both sliding speed and test load, what′s more, higher sliding speed brings lower wear volume loss and lower coefficient of friction, which is dominantly due to the combination of high hardness of the NiMo intermetallic compound and good toughness of the Ni-based solid solution γ. Wear volume loss of the alloy is only ten percent of that of hardened 0.45% C steel under the same testing condition of 0.93 m/s sliding speed and 196 N test load.
    [in Chinese], [in Chinese]. Microstructure and Wear Resistance of a Laser Melting-Deposited γ/NiMo Near-Eutectic Alloy[J]. Chinese Journal of Lasers, 2007, 34(4): 559
    Download Citation