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采用粉末冶金法制备AlNiCrFeCuMox(x=0～0.2)合金,研究Mo含量对合金微观组织以及力学性能的影响。随着Mo含量的增加,AlNiCrFeCuMox合金的微观组织均为典型的花瓣状枝晶,且由于高熵效应,使得体系的相组成十分简单,均为bcc和fcc;bcc最高峰的强度会逐渐降低,相应地fcc的强度有所增加,所以Mo元素促进了fcc结构的生成。同时,当x=0.1时,合金拥有较好的力学性能,硬度达到5160MPa,断裂强度为1161MPa,最大变形率为24.4%。AlNiCrFeCuMox合金的力学性能变化是元素性质与晶体结构综合作用的结果。
The AlNiCrFeCuMox (x = 0 ~ 0.2) alloy was prepared by powder metallurgy and the effect of Mo content on the microstructure and mechanical properties of the alloy was investigated. With the increase of Mo content, the microstructure of AlNiCrFeCuMox alloys are typical petaloid dendrites, and because of high entropy effect, the phase composition of the system is very simple, both bcc and fcc; the peak intensity of bcc will gradually decrease, Correspondingly, the strength of fcc increases, so the Mo element promotes the formation of fcc structure. At the same time, when x = 0.1, the alloy has better mechanical properties, hardness 5160MPa, breaking strength of 1161MPa, the maximum deformation rate of 24.4%. The change of mechanical properties of AlNiCrFeCuMox alloy is the result of the combination of elemental properties and crystal structure.