增材制造CoCrFeNi系高熵合金微观组织与性能研究进展  

Research Progress on the Microstructure and Properties of CoCrFeNi High-Entropy Alloys in Additive Manufacturing

作　　者：周佳敏 陈玉梅 刘奕 肖宁 胡瑶 薛江 彭涛[1] 李时春[1] 

机构地区：[1]湖南科技大学机电工程学院,湖南 湘潭

出　　处：《材料科学》2024年第8期1203-1215,共13页Material Sciences

摘　　要：高熵合金(HEAs)因其独特的微观结构与卓越性能,在国防、航空航天及海洋装备等领域备受瞩目。但传统制备工艺在获得复杂几何形状、优异综合性能的高熵合金仍存在限制。增材制造过程具有的大温度梯度和快速凝固速率等工艺特征,为高性能微观组织的高熵合金的制备提供了一种先进技术方法。本文总结了以CoCrFeNi为代表的系列高熵合金在增材制造过程中的微观组织与性能的特征及改善途径,为CoCrFeNi系高熵合金的应用提供参考。High-Entropy Alloys (HEAs) have attracted much attention in the fields of defense, aerospace and marine equipment due to their unique microstructure and excellent properties. However, there are still limitations in the traditional preparation process to obtain high-entropy alloys with complex geometries and excellent comprehensive properties. The process characteristics of additive manufacturing process, such as large temperature gradient and fast solidification rate, provide an advanced technical method for the preparation of high-entropy alloys with high-performance microstructures. In this paper, the characteristics and improvement methods of the microstructure and properties of a series of high-entropy alloys represented by CoCrFeNi in the additive manufacturing process are summarized, so as to provide a reference for the application of CoCrFeNi high-entropy alloys.

关 键 词：增材制造 高熵合金 微观组织 性能 

分 类 号：TG1[金属学及工艺—金属学]