FeCoNiAl 系高熵合金在面心立方的 FeCoNi 基体中引入体心立方相稳定元素 Al 及其他合金化元素，因此 表现出独特的显微组织、力学性能和功能性，具有广阔的工业应用前景。 近年来，增材制造技术为制造超细晶粒和几何复杂的高熵合金零件提供了技术支持，引起研究人员的广泛关注。 本文从打印工艺、显微结构、性能、缺陷和后处理等方面综述了增材制造 FeCoNiAl 系高熵合金的新进展。 系统总结了几种典型增材制造技术，并讨论不同工艺下 FeCoNiAl系高熵合金的晶体结构、显微组织及其相应的性能，阐述增材制造过程中与快速凝固和复杂热循环有关的缺陷形成机制。此外，介绍并总结了几种旨在进一步提高 FeCoNiAl 系高熵合金性能的后处理方法。最后，展望了增材制造高熵合金未来的研究方向，以解决面临的挑战，加快其在工业领域的应用。

FeCoNiAl-based high-entropy alloys (HEAs) are designed by introducing the BCC phase stabilizing element Al as well as other alloying elements into the FCC-FeCoNi matrix, thus exhibiting unique microstructures, mechanical properties, and functional performances, making them promising for a wide range of industrial applications. In recent years, additive manufacturing technology has provided technical support for manufacturing complex HEAs components with ultrafine grains, which has attracted extensive attention. This paper reviews the latest progress in additive manufacturing of FeCoNiAl-based HEAs from the aspects of printing processes, microstructures, performance, defects, and post-processing. Various typical additive manufacturing techniques are systematically summarized, the crystal structures, microstructures and corresponding properties of FeCoNiAl-based HEAs under different processes are discussed, and the mechanisms of defect formation related to rapid solidification and thermal cycles during the additive manufacturing process are elucidated. Additionally, several post-processing methods for improving the performance of FeCoNiAl-based HEAs have been introduced. Finally, future research directions in additive manufacturing of high-entropy alloys are outlined to address the current challenges and accelerate their industrial application.