高熵合金跨尺度异构强韧化及其力学性能研究进展

安子冰, 毛圣成, 张泽, 韩晓东

Strengthening-Toughening Mechanism and Mechanical Properties of Span-Scale Heterostructure High-Entropy Alloy

AN Zibing, MAO Shengcheng, ZHANG Ze, HAN Xiaodong

图4 CoCrNi合金显微结构及力学性能[65]

Fig.4 Microstructure and mechanical properties of CoCrNi alloy[65] (a, b) energy-filtered dark-field images from different diffuse superlattice peaks; examples showing the same domain contrast are marked with the arrows (c) energy-filtered diffraction pattern of the region of interest; the red and blue circles indicate the dark-field imaging conditions of Figs.4a and b (d) magnified view of the boxed part of the dark-field image in Fig.4a, with identified short-range-ordering (SRO) domains marked by the red circles (e) the histogram of identified domain diameters (d is the average diameter, σ' isthe standard deviation) (f-i) tensile mechanical properties of the CoCrNi alloys without (f, h) and with (g, i) SRO structure, respectively (DIC—digital image correlation) (Insets in Figs.4f and g are the sample images of the strain distribution during elastic leading, as determined by DIC)