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MICROSTRUCTURE AND MECHANICAL PROPERTIES OF Mo-MODIFIED Ti6Al4V SPUR GEAR

Author

Listed:
  • YONG MA

    (Research Institute of Surface Engineering, Taiyuan University of Technology, Taiyuan, Shanxi 030024, P. R. China)

  • XIAOYAN NIU

    (#x2020;College of Civil Engineering, Hebei University, Baoding, Hebei 071002, P. R. China)

  • LIN QIN

    (Research Institute of Surface Engineering, Taiyuan University of Technology, Taiyuan, Shanxi 030024, P. R. China)

  • NAIMING LIN

    (Research Institute of Surface Engineering, Taiyuan University of Technology, Taiyuan, Shanxi 030024, P. R. China)

  • XIANGYU ZHANG

    (Research Institute of Surface Engineering, Taiyuan University of Technology, Taiyuan, Shanxi 030024, P. R. China)

  • BIN TANG

    (Research Institute of Surface Engineering, Taiyuan University of Technology, Taiyuan, Shanxi 030024, P. R. China)

Abstract

In order to improve the performance of the Ti6Al4V (TC4) spur gear, a Mo surface modified layer is prepared by the plasma surface metallurgy technique. The element concentration, microstructure and elastoplastic properties are investigated with glow-discharge optical emission spectroscope (GDOES), scanning electron microscope, optical microscope (OM) and nanoindenter. Engaging with 41Cr4 steel gears, the wear resistances of the treated and untreated TC4 spur gears are evaluated through running-in and operation tests performed by a friction and wear tester under lubricated conditions. By finite element analysis, contact stress distributions in the TC4 and 41Cr4 spur gears pair are quantitatively determined. The results indicate that, being compact and uniform, the Mo-modified layer has higher hardness and retains relatively fine plasticity. The wear resistance of the treated TC4 spur gear is improved significantly.

Suggested Citation

  • Yong Ma & Xiaoyan Niu & Lin Qin & Naiming Lin & Xiangyu Zhang & Bin Tang, 2017. "MICROSTRUCTURE AND MECHANICAL PROPERTIES OF Mo-MODIFIED Ti6Al4V SPUR GEAR," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 24(03), pages 1-10, April.
    • Handle: RePEc:wsi:srlxxx:v:24:y:2017:i:03:n:s0218625x17500305
    DOI: 10.1142/S0218625X17500305
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