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Influence Of Tempering On The Microstructure Performance Of The Laser-Treated Coatings On 45 Steel

Author

Listed:
  • Xiaodong Hu

    (Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, Jinan 250061, P. R. China;
    College of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao 266590, P. R. China)

  • Yajiang Li

    (Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, Jinan 250061, P. R. China)

Abstract

Effect of the tempering on the microstructures and tribological properties of the laser alloying coatings is investigated. Laser alloying of theT-Co50/TiCmixed powders on a 45 steel substrate can form a hard composite coating, which increased the micro-hardness and wear resistance of the substrate greatly. Such laser alloying coating was investigated by means of a scanning electron microscope (SEM) and a transmission electron microscope (TEM). Experimental results indicate that the tempering is able to remove the accumulation of the residual stress in a certain extent, improving the plastic and toughness properties of such coating; moreover, tempering also improves greatly the formation mechanism, making the coating have enough ability of the intensity transfer, which is beneficial in preventing the crack propagation of the interface in such coating, leading to an improvement of the wear resistance.

Suggested Citation

  • Xiaodong Hu & Yajiang Li, 2013. "Influence Of Tempering On The Microstructure Performance Of The Laser-Treated Coatings On 45 Steel," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 20(05), pages 1-5.
    • Handle: RePEc:wsi:srlxxx:v:20:y:2013:i:05:n:s0218625x13500480
    DOI: 10.1142/S0218625X13500480
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