Garcia Filho Fabio C, Monteiro Sergio N
Department of Materials Science, Military Institute of Engineering-IME, Praça General Tibúrcio 80, 22290-270 Rio de Janeiro/RJ, Brazil.
Materials (Basel). 2020 Mar 20;13(6):1411. doi: 10.3390/ma13061411.
High entropy alloys (HEAs) emerged in the beginning of XXI century as novel materials to "keep-an-eye-on". In fact, nowadays, 16 years after they were first mentioned, a lot of research has been done regarding the properties, microstructure, and production techniques for the HEAs. Moreover, outstanding properties and possibilities have been reported for such alloys. However, a way of jointing these materials should be considered in order to make such materials suitable for engineering applications. Welding is one of the most common ways of jointing materials for engineering applications. Nevertheless, few studies concerns on efforts of welding HEAs. Therefore, it is mandatory to increase the investigation regarding the weldability of HEAs. This work aims to present a short review about what have been done in recent years, and what are the most common welding techniques that are used for HEAs. It also explores what are the measured properties of welded HEAs as well as what are the main challenges that researchers have been facing. Finally, it gives a future perspective for this research field.
高熵合金（HEAs）在21世纪初作为一种值得“关注”的新型材料出现。事实上，如今，在它们首次被提及16年后，关于高熵合金的性能、微观结构和生产技术已经开展了大量研究。此外，这类合金还展现出了出色的性能和潜力。然而，为了使这些材料适用于工程应用，需要考虑连接这些材料的方法。焊接是工程应用中连接材料最常用的方法之一。尽管如此，关于焊接高熵合金的研究却很少。因此，必须加强对高熵合金可焊性的研究。这项工作旨在简要回顾近年来所做的工作，以及用于高熵合金的最常见焊接技术。它还探讨了焊接高熵合金的测量性能以及研究人员一直面临的主要挑战。最后，给出了该研究领域的未来展望。
