Since the advent in 2004, high-entropy alloys (HEAs) have become an attraction for the world and applied in the extensive engineering fields due to their outstanding properties. These materials are exhibiting their potentiality for challenging conditions where coatings are applied through laser deposition technology. Laser deposition also known as laser cladding (LC) is a modern technology that can be applied for surface modification through HEAs. Nobler properties of the LC-HEA depositions over the conventional alloys have further explored this field in the last few years. Here, this paper provides a comprehensive state-of-the-art review for LC-HEA-based coatings, focusing on the use of laser deposition technique for HEAs, the effect of laser process parameters on mechanical properties, and microstructural evolution. The mechanical characteristics include but are not limited to hardness, wear, corrosion, and erosion resistance are discussed, with regard to their microstructure and phase composition. Besides, the existing problems, possible future developments regarding the LC-HEA depositions are predicted. Due to excellent mechanical properties and functional potential as well as a variety of element constitutions for HEA designing, laser-assisted depositions containing blended HEAs as feedstock material will have promising applications prospects in the field of material science and engineering.

自2004年问世以来，高熵合金（HEAs）以其优异的性能成为世界瞩目的焦点，并在广泛的工程领域得到广泛应用。这些材料在通过激光沉积技术应用涂层的挑战性条件下表现出其潜力。激光沉积也称为激光熔覆 (LC)，是一种现代技术，可用于通过 HEA 进行表面改性。在过去几年中，LC-HEA 沉积物比传统合金具有更高的特性，进一步探索了该领域。在此，本文对基于 LC-HEA 的涂层进行了全面的最新技术评论，重点介绍了 HEA 激光沉积技术的使用、激光工艺参数对机械性能的影响以及微观结构演变。机械特性包括但不限于硬度、磨损、腐蚀和抗侵蚀性，讨论了它们的微观结构和相组成。此外，还预测了 LC-HEA 沉积存在的问题和未来可能的发展。由于优异的机械性能和功能潜力以及用于HEA设计的多种元素组成，含有混合HEA作为原料的激光辅助沉积将在材料科学和工程领域具有广阔的应用前景。