激光熔覆镍基合金摩擦磨损性能的研究进展

Research progress on friction and wear properties of laser cladding nickel based alloys

  • 摘要: 金属零部件表面因摩擦磨损导致金属零部件失效,激光熔覆是有效的表面改性技术,可提高金属零部件表面的摩擦磨损性能,从而延长金属零部件的使用寿命。镍基合金粉末由于其与金属基体具有良好的湿润性、优异的性能提升、适宜的价格等优势,成为激光熔覆材料中的研究重点。熔覆层成分调控是影响镍基合金熔覆层性能的根本原因,通过利用不同物质的特殊性能细化晶粒调控涂层组织等,从而提升涂层的耐磨性。通过对激光熔覆镍基合金熔覆层中不同的元素添加、自润滑相添加、陶瓷相添加、稀土添加产生的固溶强化、细晶强化和第二相强化等来调控熔覆层微观组织并减少内部缺陷,优化熔覆层摩擦磨损性能的影响研究现状进行介绍,并对未来镍基合金熔覆层发展方向进行总结与展望,加深对镍基合金熔覆层摩擦磨损发展现状的了解。

     

    Abstract: The failure of metal components often results from surface wear caused by friction. Laser cladding is an effective surface modification technology that can enhance the friction and wear resistance of metal component surfaces, thereby extending the service life of metal parts. Nickel-based alloy powder has become a focal point of research in laser cladding materials due to its good wettability with metal substrates, excellent performance enhancement capabilities, and reasonable cost. Composition regulation of the cladding layer is a fundamental factor affecting the properties of nickel-based alloy cladding. By utilizing the unique properties of different substances to refine grain structure and control the coating’s microstructure, the wear resistance of the coating can be improved.Therefore, this paper reviews the current research on the effects of adding various elements, self-lubricating phases,ceramic phases, and rare earth elements to the nickel-based alloy cladding layer in laser cladding. These additions contribute to solution strengthening, fine grain strengthening, and second phase strengthening, thus refining the microstructure and reducing internal defects of the cladding layer to optimize its friction and wear performance.The paper also provides a summary and outlook on the future development direction of nickel-based alloy cladding layers, serving as a reference for understanding the current state of research on the friction and wear properties of nickel-based alloy cladding layers.

     

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