CAJ | 학술논문

利用真空电弧炉熔铸等摩尔比的AlCuCrFeNiMn多主元高熵合金.扫描电镜及能谱分析表明,合金的铸态组织是典型的树枝晶,铜偏聚于枝晶.晶间分布着大量微小颗粒,有的颗粒尺寸甚至达到纳米级.AlCuCrFeNiMn高熵合金具有高硬度与耐回火软化特性,铸态硬度为380 HBW,600℃退火2 h后硬度为376 HBW.
이용진공전호로용주등마이비적AlCuCrFeNiMn다주원고적합금.소묘전경급능보분석표명,합금적주태조직시전형적수지정,동편취우지정.정간분포착대량미소과립,유적과립척촌심지체도납미급.AlCuCrFeNiMn고적합금구유고경도여내회화연화특성,주태경도위380 HBW,600℃퇴화2 h후경도위376 HBW.
The euqui-molar AICuCrFeNiMn high-entropy alloy (HEA) was synthesized with vacuum are furnace. The microstructure and elements distribution were investigated by scanning electron microscopy. The results show that the as-east microstructure of HEA is typical dendrite. The copper segregates to inter-dendrite. A lot of fine particles exist in the interdendrite of HEA, some are even as fine as nano-meter scale. The HEA has high hardness and good thermal stability. The hardness values of the alloy as-cast and obtained by annealing at 600℃ is 380 HBW and 376 HBW respectively.