激光熔覆高熵合金涂层研究进展

Research Progress on Laser-cladded High-Entropy Alloy Coatings

摘要:

高熵合金凭借其颠覆性的多主元设计理念展现出优异的综合性能，是实现结构-功能一体化的理想材料。激光熔覆高熵合金涂层结合高熵合金的性能优势与激光熔覆的技术优势，实现了表面性能、力学性能和功能性能之间的高质量平衡，展现出巨大工程应用潜力。本文从激光熔覆高熵合金涂层的“工艺-微观结构-性能”关系及其内在作用机理出发，总结了制备方法及工艺参数优化策略，归纳了微观结构特征和性能特点，揭示了在腐蚀、氧化、磨损等单一及耦合工况下的性能提升机制，讨论了潜在应用场景，并对当前应用中亟待解决的问题及未来发展方向进行了展望。

Abstract:

High-entropy alloys demonstrate outstanding comprehensive performance due to their revolutionary multi-component design concept, making them ideal materials for achieving structural-function integration. The laser cladded high-entropy alloy coatings combines the performance advantages of high-entropy alloys with the technical advantages of laser cladding, achieving a high-quality balance among surface performance, mechanical performance, and functional performance, and showing great potential for engineering applications. This paper starts from the "process-microstructure-performance" relationship and the intrinsic mechanism. The preparation methods and optimization strategies are summarized. The microstructure, performance and performance improvement mechanisms under single and coupled conditions are revealed. The potential application scenarios and the problems that need to be solved urgently in current applications and the future development direction are disccused.