journal article·2021-12-01Open access

Element dependence of local disorder in medium-entropy alloy CrCoNi

N. Hanasaki, M. Oda, K. Niitsu, K. Ehara, H. Murakawa, H. Sakai, H. Nitani, H. Abe, H. Sagayama, H. Uetsuka, T. Karube, H. Inui

AIP Advances· Volume 11· Issue 12

Abstract

The medium-entropy alloy CrCoNi is known to have exceptional mechanical properties. To clarify its local structure, we performed extended x-ray absorption fine structure measurement of CrCoNi. The structural disorder is larger in Cr sites than in other constituent elements, which is consistent with the larger atomic displacement of the Cr atoms predicted by previous first-principles calculations. The Cr atom has a solute-type characteristic that induces local disorder. The differences in local disorder among the constituent elements decrease as the annealing time increases in the temperature range in which a short-range order develops.
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Research context

OpenAlex topics: High Entropy Alloys Studies · High-Temperature Coating Behaviors · Chalcogenide Semiconductor Thin Films

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Physics, Osaka University 1 , Toyonaka, Osaka 560-0043, Japan

Department of Materials Science and Engineering, Kyoto University 2 , Kyoto 606-8501, Japan

Center for Elements Strategy Initiative for Structure Materials (ESISM), Kyoto University 3 , Kyoto 606-8501, Japan

Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK) 4 , 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan

Department of Materials Structure Science, School of High Energy Accelerator Science, SOKENDAI (The Graduate University for Advanced Studies) 5 , 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan

Graduate School of Science and Engineering, Ibaraki University 6 , 2-1-1 Bunkyo, Mito, Ibaraki 310-8512, Japan

Asahi Diamond Industrial Co., Ltd. 7 , Kawasaki, Kanagawa 213-0032, Japan

Funding

Japan Society for the Promotion of Science · Asahi Glass Foundation

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