高熵合金中的局域化学有序

丁俊, 王章洁

Local Chemical Order in High-Entropy Alloys

DING Jun, WANG Zhangjie

图3 透射电子显微镜电子衍射与暗场像表征高熵合金中局域化学有序^[48,58]
(a) energy-filtered diffraction patterns for aged CrCoNi samples at 1000^oC^[48]
(b) energy-filtered dark-field image from diffuse superlattice peaks (short-range order (SRO)-enhanced domains are marked by arrows)^[48]
(c) the histogram of identified SRO domain diameters^[48] (

\overset{ˉ}{d}

and σ are the average diameter and its standard deviation of domains, respectively)
(d) SAED pattern indexed as [

\overset{ˉ}{1} 12

]/2 showing the local chemical ordering (LCO)-generated reflections (yellow circle)^[58]
(e) direct visualization of LCO domains by DF-TEM analysis^[58]
(f) size distribution of the LCO domains that appear outside planar slip bands (left) and at planar slip bands (right)^[58]

Fig.3 Characterizations of local chemical order in HEAs