English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Self-diffusion in carbon-alloyed CoCrFeMnNi high entropy alloys

Lukianova, O. A., Kulitskiy, V. A., Rao, Z., Li, Z., Wilde, G., & Divinski, S. V. (2022). Self-diffusion in carbon-alloyed CoCrFeMnNi high entropy alloys. Acta Materialia, 237: 118136. doi:10.1016/j.actamat.2022.118136.

Item is

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Lukianova, Olga A.1, Author           
Kulitskiy, V. A.2, Author           
Rao, Ziyuan3, 4, Author           
Li, Zhiming5, 6, Author           
Wilde, G.7, Author           
Divinski, Sergiy V.8, Author           
Affiliations:
1Institute of Materials Physics, University of Münster, Germany, ou_persistent22              
2Institut für Materialphysik, Westfälische Wilhelms-Universität Münster, Wilhelms, Germany, ou_persistent22              
3De magnete - Designing Magnetism on the atomic scale, MPG Group, Interdepartmental and Partner Groups, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_3260224              
4High-Entropy Alloys, Microstructure Physics and Alloy Design, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_3010672              
5High-Entropy Alloys, Project Groups, Microstructure Physics and Alloy Design, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_3010672              
6School of Materials Science and Engineering, Central South University, Changsha 410083, China, ou_persistent22              
7Institut für Materialphysik, Westfälische Wilhelms-Universität Münster, Wilhelms, Germany , ou_persistent22              
8Institute for Materials Physics, University of Münster, Münster, Germany, ou_persistent22              

Content

show
hide
Free keywords: -
 Abstract: Tracer diffusion of the substitutional components in interstitial (CoCrFeNiMn)1-xCx high-entropy alloys with nominally x = 0.002, 0.005 and 0.008 (in at. fractions) is measured at elevated temperatures from 1173 to 1373 K. Two different characteristic effects of interstitial carbon addition on substitutional diffusion in these FCC alloys are distinguished. At the highest temperature of 1373 K, alloying by C with relatively low concentrations (x = 0.002) retards diffusion of the substitutional elements with respect to those in the C-free alloy. At lower temperatures and/or higher C concentrations (x ≥ 0.005), an enhancement of the diffusion rates of all substitutional elements is seen. A model is suggested that relates the self-diffusivities in the CoCrFeMnNi-C alloys with the lattice distortion imposed by interstitially dissolved carbon. The experimental results are interpreted in terms of a decrease of the migration barriers for vacancy-mediated diffusion due to the presence of interstitial C atoms.

Details

show
hide
Language(s): eng - English
 Dates: 2022-09-15
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1016/j.actamat.2022.118136
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Acta Materialia
  Abbreviation : Acta Mater.
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Kidlington : Elsevier Science
Pages: - Volume / Issue: 237 Sequence Number: 118136 Start / End Page: - Identifier: ISSN: 1359-6454
CoNE: https://pure.mpg.de/cone/journals/resource/954928603100