【摘要】 为了获得具有更好强塑性平衡的CrCoNi中熵合金，采用冷轧、异步轧制、深冷轧制和深冷异步轧制4种工艺对中熵合金CrCoNi进行加工，并对合金进行不同温度的退火处理。研究结果表明：深冷异步轧制的合金获得超过1.6 GPa的高强度，当经过1073 K的退火处理后，在具有接近60%的伸长率的同时，仍然保留接近1 GPa的强度。采用深冷异步轧制和退火后，得到较室温异步轧制更为明显的异质特征，这使材料具有更高的强度与更好的塑性。更多还原

【Abstract】 In order to obtain good strength-plasticity synergy for a medium entropy alloy(MEA) CrCoNi, cold rolling, asymmetric rolling, cryorolling and asymmetric-cryorolling with subsequent annealing at different temperatures were conducted. The results showed that the asymmetric-cryorolled alloy achieved a high strength of over 1.6 GPa. After annealing at 1073 K, it retained a high strength of ～1 GPa while the elongation reached nearly 60%. After annealing, the heterogeneous characteristics were formed in asymmetric-cryorolled samples, which were found to be more distinct than those of the samples subjected to asymmetric rolling. This resulted in the generation of high strength and ductility.更多还原