DSpace Kyoto University
Japanese | English 

Kyoto University Research Information Repository >
Graduate School of Engineering >
Journal Articles >

Access count of this item: 2

Please use this identifier to cite or link to this item: http://hdl.handle.net/2433/218241

Full text link:

File Description SizeFormat
1.4971371.pdf1.54 MBAdobe PDFView/Open
Title: Atomic displacement in the CrMnFeCoNi high-entropy alloy – A scaling factor to predict solid solution strengthening
Authors: Okamoto, Norihiko L.
Yuge, Koretaka kyouindb researcher_resolver
Tanaka, Katsushi
Inui, Haruyuki
George, Easo P.
Author's alias: 乾, 晴行
弓削, 是貴
Issue Date: 1-Dec-2016
Publisher: American Institute of Physics Inc.
Journal title: AIP Advances
Volume: 6
Issue: 12
Thesis number: 125008
Abstract: Although metals strengthened by alloying have been used for millennia, models to quantify solid solution strengthening (SSS) were first proposed scarcely seventy years ago. Early models could predict the strengths of only simple alloys such as dilute binaries and not those of compositionally complex alloys because of the difficulty of calculating dislocation-solute interaction energies. Recently, models and theories of SSS have been proposed to tackle complex high-entropy alloys (HEAs). Here we show that the strength at 0 K of a prototypical HEA, CrMnFeCoNi, can be scaled and predicted using the root-mean-square atomic displacement, which can be deduced from X-ray diffraction and first-principles calculations as the isotropic atomic displacement parameter, that is, the average displacements of the constituent atoms from regular lattice positions. We show that our approach can be applied successfully to rationalize SSS in FeCoNi, MnFeCoNi, MnCoNi, MnFeNi, CrCoNi, CrFeCoNi, and CrMnCoNi, which are all medium-entropy subsets of the CrMnFeCoNi HEA.
Rights: © 2016 Author(s). This article is distributed under a Creative Commons Attribution (CC BY) License.
URI: http://hdl.handle.net/2433/218241
DOI(Published Version): 10.1063/1.4971371
Appears in Collections:Journal Articles


Export to RefWorks

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

 

Powered by DSpace 3.2.0 and JAIRO Crawler-List version 1.1
All items in KURENAI are protected by original copyright, with all rights reserved, unless otherwise indicated.
Feedback