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Title: Destruction of mesoscopic chemically modulated domains in single phase high entropy alloy via plastic deformation
Authors: Miyajima, Yoji
Nagata, Tomohiro
Takeda, Kohei
Yoshida, Shuhei  kyouindb  KAKEN_id  orcid https://orcid.org/0000-0001-7798-3883 (unconfirmed)
Yasuno, Satoshi
Watanabe, Chihiro
Kazuhiro, Ishikawa
Adachi, Hiroki
Tsuji, Nobuhiro  kyouindb  KAKEN_id  orcid https://orcid.org/0000-0002-2132-1327 (unconfirmed)
Author's alias: 吉田, 周平
辻, 伸泰
Keywords: Characterization and analytical techniques
Metals and alloys
Issue Date: 2022
Publisher: Springer Nature
Journal title: Scientific Reports
Volume: 12
Thesis number: 16776
Abstract: Chemically modulated mesoscopic domains in a fcc single phase CrMnFeCoNi equi-atomic high entropy alloy (HEA) are detected by small angle diffraction performed at a synchrotron radiation facility, whereas the mesoscopic domains cannot be detected by conventional X-ray diffraction and 2D mappings of energy dispersive X-ray spectroscopy by scanning electron microscopy and scanning transmission electron microscopy. The mesoscopic domains are deformed and shrieked, and finally destructed by plastic deformation, which is supported by the comprehensive observations/measurements, such as electrical resistivity, Vickers hardness, electron backscattering diffraction, and hard X-ray photoemission spectroscopy. The destruction of the mesoscopic domains causes the decrease in electrical resistivity via plastic deformation, so called K-effect, which is completely opposite to the normal trend of metals. We confirmed that the presence and the size of local chemical ordering or short-range order domains in the single phased HEA, and furthermore, Cr and Mn are related to form the domains.
Rights: © The Author(s) 2022
This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder.
URI: http://hdl.handle.net/2433/282056
DOI(Published Version): 10.1038/s41598-022-20932-y
PubMed ID: 36202894
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