难熔金属增材制造研究进展

难熔金属具有熔点高、高温性能良好的特点,是发动机、燃气轮机、火箭、导弹等高温服役工况条件下不可或缺的材料,在军事装备领域和国民经济生活中都发挥着十分重要的作用。然而也正是因为高的熔点和导热系数,导致其加工制备十分困难。增材制造技术是近年来发展起来的一项先进制造技术,具有很多独特的优点,为难熔金属的加工提供了一种可选途径。本文概述了钨及钨合金、多孔钽、铌合金、钼合金、难熔高熵合金等难熔金属增材制造方面的研究现状及最新进展,以期为相关领域的研究提供参考。

Research Progress on Additively Manufactured Refractory Metals

Owning to high melting temperature, refractory metals possess excellent properties under high temperature, hence they are crucial materials in parts bearing extreme thermal conditions such as engine, gas turbine, rocket, missile, etc. So refractory metal parts are very important in military equipment and civil life. However, it is very difficult to fabricate due to the high melting temperature and good thermal conductivity. Additive manufacturing is a new technique developed in recent years, it possess unique advantages thus providing a possible fabrication route for refractory metals. In this paper, research progress on additive manufacturing of tungsten and tungsten alloy, porous tantalum, niobium alloy, molybdenum alloy and refractory high entropy alloys were summarized. It may be helpful for researchers dedicated in related field.