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<p>Laser cladding technology has garnered significant attention in surface engineering owing to its high energy density, minimal heat input, and superior metallurgical bonding capability. However, issues such as grain coarsening, porosity, and crack sensitivity induced by rapid solidification restrict its application under extreme working conditions. Recently, the incorporation of in situ external fields (e.g., electromagnetic fields and ultrasonic fields) has offered a novel approach to modulate the dynamics of the melt pool. This review systematically reviews the influence mechanisms of various external fields on coatings and the transformation mechanisms of coating microstructures and properties. Finally, it discusses the challenges, countermeasures, and future opportunities associated with the application of external fields.</p>

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Review of Research Progress on the Control Role of External Field Assistance in Laser Cladding

  • 期刊论文

  • 发表日期：

    2026年7月4日

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  • Mingqi Tang,
  • Yingkun Tian,
  • Zaiqiang Feng,
  • Yatong Xin,
  • Ningning Li,
  • Gang Li,
  • Wen Wang,
  • Zhenwei Yan

摘要

Laser cladding technology has garnered significant attention in surface engineering owing to its high energy density, minimal heat input, and superior metallurgical bonding capability. However, issues such as grain coarsening, porosity, and crack sensitivity induced by rapid solidification restrict its application under extreme working conditions. Recently, the incorporation of in situ external fields (e.g., electromagnetic fields and ultrasonic fields) has offered a novel approach to modulate the dynamics of the melt pool. This review systematically reviews the influence mechanisms of various external fields on coatings and the transformation mechanisms of coating microstructures and properties. Finally, it discusses the challenges, countermeasures, and future opportunities associated with the application of external fields.