On Sluggish Diffusion in Fcc Al–Co–Cr–Fe–Ni High-Entropy Alloys: An Experimental and Numerical Study

High-throughput measurement using the numerical inverse method combined with the diffusion multiple technique was employed to determine the composition-dependent interdiffusion coefficients in fcc Al–Co–Cr–Fe–Ni high-entropy alloys at 1273, 1323, and 1373 K. The reliability of the obtained interdiff...

Full description

Bibliographic Details
Main Authors:	Qin Li, Weimin Chen, Jing Zhong, Lijun Zhang, Qing Chen, Zi-Kui Liu
Format:	Article
Language:	English
Published:	MDPI AG 2017-12-01
Series:	Metals
Subjects:	Al–Co–Cr–Fe–Ni high-entropy alloys diffusion numerical inverse method diffusion multiple
Online Access:	https://www.mdpi.com/2075-4701/8/1/16

id	doaj-32e20ad9e2df4fdaac52b285fc7c99da
record_format	Article
spelling	doaj-32e20ad9e2df4fdaac52b285fc7c99da2020-11-24T23:04:56ZengMDPI AGMetals2075-47012017-12-01811610.3390/met8010016met8010016On Sluggish Diffusion in Fcc Al–Co–Cr–Fe–Ni High-Entropy Alloys: An Experimental and Numerical StudyQin Li0Weimin Chen1Jing Zhong2Lijun Zhang3Qing Chen4Zi-Kui Liu5State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, ChinaState Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, ChinaState Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, ChinaState Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, ChinaThermo-Calc Software AB, Råsundavägen 18, SE-16967 Solna, SwedenDepartment of Materials Science and Engineering, Pennsylvania State University, University Park, PA 16802, USAHigh-throughput measurement using the numerical inverse method combined with the diffusion multiple technique was employed to determine the composition-dependent interdiffusion coefficients in fcc Al–Co–Cr–Fe–Ni high-entropy alloys at 1273, 1323, and 1373 K. The reliability of the obtained interdiffusion coefficients was confirmed by comparing the model-predicted composition/interdiffusion flux profiles with the experimental data. The tracer diffusivities of the components were then predicted based on the obtained interdiffusion coefficients and the simplified thermodynamic description. The diagonal interdiffusion coefficients in the present high-entropy alloys were comprehensively compared with those in conventional fcc alloys. Therefore, the sluggish diffusion effect does not apply for all the elements in the present fcc Al–Co–Cr–Fe–Ni high-entropy alloys. A similar result was also observed for the evaluated tracer diffusivities.https://www.mdpi.com/2075-4701/8/1/16Al–Co–Cr–Fe–Nihigh-entropy alloysdiffusionnumerical inverse methoddiffusion multiple
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Qin Li Weimin Chen Jing Zhong Lijun Zhang Qing Chen Zi-Kui Liu
spellingShingle	Qin Li Weimin Chen Jing Zhong Lijun Zhang Qing Chen Zi-Kui Liu On Sluggish Diffusion in Fcc Al–Co–Cr–Fe–Ni High-Entropy Alloys: An Experimental and Numerical Study Metals Al–Co–Cr–Fe–Ni high-entropy alloys diffusion numerical inverse method diffusion multiple
author_facet	Qin Li Weimin Chen Jing Zhong Lijun Zhang Qing Chen Zi-Kui Liu
author_sort	Qin Li
title	On Sluggish Diffusion in Fcc Al–Co–Cr–Fe–Ni High-Entropy Alloys: An Experimental and Numerical Study
title_short	On Sluggish Diffusion in Fcc Al–Co–Cr–Fe–Ni High-Entropy Alloys: An Experimental and Numerical Study
title_full	On Sluggish Diffusion in Fcc Al–Co–Cr–Fe–Ni High-Entropy Alloys: An Experimental and Numerical Study
title_fullStr	On Sluggish Diffusion in Fcc Al–Co–Cr–Fe–Ni High-Entropy Alloys: An Experimental and Numerical Study
title_full_unstemmed	On Sluggish Diffusion in Fcc Al–Co–Cr–Fe–Ni High-Entropy Alloys: An Experimental and Numerical Study
title_sort	on sluggish diffusion in fcc al–co–cr–fe–ni high-entropy alloys: an experimental and numerical study
publisher	MDPI AG
series	Metals
issn	2075-4701
publishDate	2017-12-01
description	High-throughput measurement using the numerical inverse method combined with the diffusion multiple technique was employed to determine the composition-dependent interdiffusion coefficients in fcc Al–Co–Cr–Fe–Ni high-entropy alloys at 1273, 1323, and 1373 K. The reliability of the obtained interdiffusion coefficients was confirmed by comparing the model-predicted composition/interdiffusion flux profiles with the experimental data. The tracer diffusivities of the components were then predicted based on the obtained interdiffusion coefficients and the simplified thermodynamic description. The diagonal interdiffusion coefficients in the present high-entropy alloys were comprehensively compared with those in conventional fcc alloys. Therefore, the sluggish diffusion effect does not apply for all the elements in the present fcc Al–Co–Cr–Fe–Ni high-entropy alloys. A similar result was also observed for the evaluated tracer diffusivities.
topic	Al–Co–Cr–Fe–Ni high-entropy alloys diffusion numerical inverse method diffusion multiple
url	https://www.mdpi.com/2075-4701/8/1/16
work_keys_str_mv	AT qinli onsluggishdiffusioninfccalcocrfenihighentropyalloysanexperimentalandnumericalstudy AT weiminchen onsluggishdiffusioninfccalcocrfenihighentropyalloysanexperimentalandnumericalstudy AT jingzhong onsluggishdiffusioninfccalcocrfenihighentropyalloysanexperimentalandnumericalstudy AT lijunzhang onsluggishdiffusioninfccalcocrfenihighentropyalloysanexperimentalandnumericalstudy AT qingchen onsluggishdiffusioninfccalcocrfenihighentropyalloysanexperimentalandnumericalstudy AT zikuiliu onsluggishdiffusioninfccalcocrfenihighentropyalloysanexperimentalandnumericalstudy
_version_	1725628389619924992

On Sluggish Diffusion in Fcc Al–Co–Cr–Fe–Ni High-Entropy Alloys: An Experimental and Numerical Study

Similar Items