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The influence of Y content on the formability and friction wear of Fe-Cr-C-B-Ti cladding metals
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Shenyang University of Technology

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    Abstract:

    The failure of mechanical parts is mainly caused by three types of reasons: wear, corrosion, and fatigue. Among these three failure modes, wear and tear of mechanical components notably increase energy consumption and lead to substantial economic losses. Preparation of Fe-Cr-C-B-Ti-Y wear resistant cladding metals by plasma cladding method. The wear performance of cladding metals was analyzed using the MLS-23 rubber wheel wet sand wear tester. XRD, SEM, EBSD, and TEM were employed to examine the phase composition and microstructure of the cladding metals, followed by a discussion on the cladding metals strengthening and wear mechanisms. The results indicate that the microstructure of Fe-Cr-C-B-Ti-Y cladding metals is composed of austenite γ-Fe+M23(C,B)6 eutectic carbide+TiC hard phase. As the amount of Y2O3 added increases, the hardness and wear of the deposited metal show a trend of first increasing and then decreasing. When the Y2O3 content is 0.4%, the precipitation of TiC hard phase and M23(C,B)6 type eutectic carbides reaches its maximum, and the grain size in the microstructure is the smallest. The forming performance of the cladding metal is the best, and the wetting angle is the smallest, only 52.2 °. At this point, the rockwell hardness value of the cladding metal is 89.7 HRC, and the wear weight loss is 0.27g. The wear mechanism of cladding metals is mainly abrasive wear, and the material removal process involves micro cutting and plowing.

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[Jianbo Guo, Zhengjun Liu, suyunhai. The influence of Y content on the formability and friction wear of Fe-Cr-C-B-Ti cladding metals[J]. Rare Metal Materials and Engineering,,().]
DOI:10.12442/j. issn.1002-185X.20240458

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History
  • Received:July 25,2024
  • Revised:October 13,2024
  • Adopted:October 18,2024
  • Online: November 21,2024
  • Published: