Constitutive modeling of deformation behavior of high-entropy alloys with face-centered cubic crystal structure

A constitutive model based on the dislocation glide and deformation twinning is adapted to face-centered cubic high-entropy alloys (HEAs) as exemplified by the CrMnFeCoNi system. In this model, the total dislocation density is considered as the only internal variable, while the evolution equation de...

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Main Authors:	Min Ji Jang, Dong-Hyun Ahn, Jongun Moon, Jae Wung Bae, Dami Yim, Jien-Wei Yeh, Yuri Estrin, Hyoung Seop Kim
Format:	Article
Language:	English
Published:	Taylor & Francis Group 2017-09-01
Series:	Materials Research Letters
Subjects:	Constitutive model high-entropy alloys plastic deformation work hardening twinning
Online Access:	http://dx.doi.org/10.1080/21663831.2017.1292325

id	doaj-91bb27b5c07e42398f3e5d64982b0eec
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spelling	doaj-91bb27b5c07e42398f3e5d64982b0eec2020-11-25T03:07:37ZengTaylor & Francis GroupMaterials Research Letters2166-38312017-09-015535035610.1080/21663831.2017.12923251292325Constitutive modeling of deformation behavior of high-entropy alloys with face-centered cubic crystal structureMin Ji Jang0Dong-Hyun Ahn1Jongun Moon2Jae Wung Bae3Dami Yim4Jien-Wei Yeh5Yuri Estrin6Hyoung Seop Kim7Pohang University of Science and Technology (POSTECH)Korea Atomic Energy Research Institute (KAERI)Pohang University of Science and Technology (POSTECH)Pohang University of Science and Technology (POSTECH)Pohang University of Science and Technology (POSTECH)National Tsing Hua UniversityMonash UniversityPohang University of Science and Technology (POSTECH)A constitutive model based on the dislocation glide and deformation twinning is adapted to face-centered cubic high-entropy alloys (HEAs) as exemplified by the CrMnFeCoNi system. In this model, the total dislocation density is considered as the only internal variable, while the evolution equation describing its variation during plastic deformation is governed by the volume fraction of twinned material. The suitability of the model for describing the strain hardening behavior of HEAs was verified experimentally through compression tests on alloy CrMnFeCoNi and its microstructure characterization by electron backscatter diffraction and X-ray diffraction using synchrotron radiation.http://dx.doi.org/10.1080/21663831.2017.1292325Constitutive modelhigh-entropy alloysplastic deformationwork hardeningtwinning
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Min Ji Jang Dong-Hyun Ahn Jongun Moon Jae Wung Bae Dami Yim Jien-Wei Yeh Yuri Estrin Hyoung Seop Kim
spellingShingle	Min Ji Jang Dong-Hyun Ahn Jongun Moon Jae Wung Bae Dami Yim Jien-Wei Yeh Yuri Estrin Hyoung Seop Kim Constitutive modeling of deformation behavior of high-entropy alloys with face-centered cubic crystal structure Materials Research Letters Constitutive model high-entropy alloys plastic deformation work hardening twinning
author_facet	Min Ji Jang Dong-Hyun Ahn Jongun Moon Jae Wung Bae Dami Yim Jien-Wei Yeh Yuri Estrin Hyoung Seop Kim
author_sort	Min Ji Jang
title	Constitutive modeling of deformation behavior of high-entropy alloys with face-centered cubic crystal structure
title_short	Constitutive modeling of deformation behavior of high-entropy alloys with face-centered cubic crystal structure
title_full	Constitutive modeling of deformation behavior of high-entropy alloys with face-centered cubic crystal structure
title_fullStr	Constitutive modeling of deformation behavior of high-entropy alloys with face-centered cubic crystal structure
title_full_unstemmed	Constitutive modeling of deformation behavior of high-entropy alloys with face-centered cubic crystal structure
title_sort	constitutive modeling of deformation behavior of high-entropy alloys with face-centered cubic crystal structure
publisher	Taylor & Francis Group
series	Materials Research Letters
issn	2166-3831
publishDate	2017-09-01
description	A constitutive model based on the dislocation glide and deformation twinning is adapted to face-centered cubic high-entropy alloys (HEAs) as exemplified by the CrMnFeCoNi system. In this model, the total dislocation density is considered as the only internal variable, while the evolution equation describing its variation during plastic deformation is governed by the volume fraction of twinned material. The suitability of the model for describing the strain hardening behavior of HEAs was verified experimentally through compression tests on alloy CrMnFeCoNi and its microstructure characterization by electron backscatter diffraction and X-ray diffraction using synchrotron radiation.
topic	Constitutive model high-entropy alloys plastic deformation work hardening twinning
url	http://dx.doi.org/10.1080/21663831.2017.1292325
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Constitutive modeling of deformation behavior of high-entropy alloys with face-centered cubic crystal structure

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