高熵合金的低温塑性变形机制及强韧化研究进展

刘俊鹏, 陈浩, 张弛, 杨志刚, 张勇, 戴兰宏

Progress of Cryogenic Deformation and Strengthening-Toughening Mechanisms of High-Entropy Alloys

LIU Junpeng, CHEN Hao, ZHANG Chi, YANG Zhigang, ZHANG Yong, DAI Lanhong

图7 CoCrFeNi高熵合金极低温变形时的孪晶及相变特征[10] Color online (a) TEM image and SAED pattern (inset), showing the twins and fcc-hcp phase transition occur in the sample (b) HRTEM image (T—twins) (c) atomic image of the enlarged red rectangle in Fig.7b, witness the hcp SF appears in the sample

Fig.7 Feature of twins and phase transition in CoCrFeNi HEA after deformation at 4.2 K[10]