增材制造难熔高熵合金综述

Review on Additively Manufactured Refractory High-Entropy Alloys

摘要:

寻求可打印金属材料的研究至关重要。近年来，多种可打印性良好的材料已被发掘出来，如Ti-6Al-4V、FeMnCoCrNi、不锈钢及一些难熔高熵合金。尽管已经获得了诸多可喜结果，增材制造难熔高熵合金依然发展缓慢。由于难熔高熵合金的优越高温性能，复杂成形的需求也日渐高涨。本文主要介绍了增材制造难熔高熵合金的一些研究进展，综述了有关难熔高熵合金激光增材制造、电子束增材制造和丝材增材制造技术，并为后续研究工作提供参考。此外，本文也系统地讨论了有关增材制造难熔高熵合金面临的机遇和挑战。

Abstract:

Searching for printable metallic materials is of great importance. In recent years, several kinds of printable alloys have been researched, such as Ti-6Al-4V, FeMnCoCrNi, stainless steels, and some refractory high-entropy alloys (RHEAs). In spite of these delightful results, the development in additive manufacturing of RHEAs is proceeding slowly. Because of the excellent behavior of RHEAs at high temperatures, more requirements are proposed for the complex shape forming. This review primarily introduced the recent studies on additive manufacturing of RHEAs. The laser beam-based, electron beam-based, and wire-based additive manufacturing techniques for fabrication of RHEAs were summarized. In addition, the opportunities and challenges of the current development of RHEAs fabricated by additive manufacturing were discussed.