CoCrFeNiNb_x高熵合金的研究进展

High entropy alloys, a new type of hot-research alloy, have received extensive attention in the material industry. Taking equal atomic ratio CoCrFeNiMn as the prototype, numerous fcc-structure high-entropy alloys with excellent mechanical properties have been reported. Recently eutectic high-entropy alloys have attracted more and more attention of scientific researchers due to their excellent casting properties and comprehensive mechanical properties. In this paper, we selected the CoCrFeNiNb_x alloy system, focused on precipitation-strengthened high-entropy alloys and eutectic high-entropy alloys, and summarized the current research progress from the aspects of composition design, microstructure evolution, mechanical properties and strengthening and toughening mechanism. Finally, we analyzed the shortcomings of current research and pointed out the direction of future research.