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High-Temperature Friction And Wear Behavior Of A Ni-Based Valve Alloy

Author

Listed:
  • ZHI-YUAN ZHU

    (School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, P. R. China)

  • JIA-HUAN CHEN

    (School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, P. R. China)

  • YUAN-FEI CAI

    (School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, P. R. China)

  • JIAN-QIANG LI

    (School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, P. R. China)

Abstract

This study explored the friction and wear behavior of a Ni-based exhaust valve at high temperatures. Nickel-based superalloy was used with two types of processing states: the original forged sample and the sample under the standard T1 heat treatment. At room temperature and a loading force of 10N, the average friction coefficient of the T1 heat-treated specimen is 0.61, which was lower than that of the forged sample (0.78). The wear rate of this specimen was also lower than that of the forged sample at the same temperature and loading force. Thus, T1 heat treatment can significantly improve the wear resistance of the alloy because of γ′ phase and carbides. The wear rate was the minimum at 550∘C and increased again at 750∘C dominated by the formation and flake-off of the oxide film.

Suggested Citation

  • Zhi-Yuan Zhu & Jia-Huan Chen & Yuan-Fei Cai & Jian-Qiang Li, 2019. "High-Temperature Friction And Wear Behavior Of A Ni-Based Valve Alloy," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 26(10), pages 1-7, December.
    • Handle: RePEc:wsi:srlxxx:v:26:y:2019:i:10:n:s0218625x19500744
    DOI: 10.1142/S0218625X19500744
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