著者

池田 陽一 梅本 好日古 藤田 全基

出版者

日本結晶学会

雑誌

日本結晶学会誌 (ISSN:03694585)

巻号頁・発行日

vol.65, no.3, pp.192-197, 2023-08-31 (Released:2023-09-06)

参考文献数

29

被引用文献数

1

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This report introduced the results of recent neutron scattering and X-ray absorption fine structure(EXAFS)experiments on a family of medium-entropy alloys(TrCoNi, Tr=Cr, Mn, and Fe). Neutron experiments revealed that the time-temperature-dependent short- and long-range structural transformation occurs in a medium-entropy alloy MnCoNi. Although a sign of short-range ordering was not clear in the EXAFS results, the mean-square relative displacement(MSRD)may catch the difference in local structures between medium-entropy alloys. The relatively large static MSRD of the MnCoNi sample can be interpreted as a sign of short-range tetragonal structural transformation, whereas the small value of the CrCoNi sample cannot be interpreted straightforwardly. A possible interpretation of the difference in MSRD was provided.