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A STUDY ON MICROSTRUCTURE CHARACTERISTICS OFIN SITUFORMEDTiCREINFORCED COMPOSITE COATINGS

Author

Listed:
  • PENG LIU

    (School of Materials Science and Engineering, Shandong Jianzhu University, Jinan 250101, P. R. China)

  • WEI GUO

    (School of Mechanical Engineering and Automation, Beijing University of Aeronautics and Astronautics, Beijing 100191, P. R. China)

  • HUI LUO

    (School of Materials Science and Engineering, Shandong Jianzhu University, Jinan 250101, P. R. China)

Abstract

In situsynthesizedTiCreinforced composite coating was fabricated by laser cladding ofAl-Ni-Cr-Cpowders on titanium alloys, which can greatly improve the surface performance of the substrate. In this study, theAl-Ni-Cr-Claser-cladded composite coatings have been researched by means of X-ray diffraction, scanning electron microscope (SEM) and electron probe micro-analyzer (EPMA). There was a metallurgical combination between theAl-Ni-Cr-Claser-cladded coating and theTi-6Al-4Vsubstrate, and the micro-hardness of theAl-Ni-Cr-Claser-cladded coating was in the range of ~1200–1450 HV0.2, which was ~3–4 times higher than that ofTi-6Al-4Vsubstrate. Furthermore,the reinforcement of theAl-Ni-Cr-Claser-cladded coating were mainly contributed to the action of theTiC,Ti3Al,Cr7C3,Al8Cr5phases and the solution strengthening.

Suggested Citation

  • Peng Liu & Wei Guo & Hui Luo, 2012. "A STUDY ON MICROSTRUCTURE CHARACTERISTICS OFIN SITUFORMEDTiCREINFORCED COMPOSITE COATINGS," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 19(02), pages 1-7.
    • Handle: RePEc:wsi:srlxxx:v:19:y:2012:i:02:n:s0218625x12500163
    DOI: 10.1142/S0218625X12500163
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