التفاصيل البيبلوغرافية
| العنوان: |
Enhancement of vacancy diffusion by C and N interstitials in the equiatomic FeMnNiCoCr high entropy alloy |
| المؤلفون: |
Lu, Eryang, Zhao, Junlei, Makkonen, Ilja, Mizohata, Kenichiro, Li, Zhiming, Hua, Mengyuan, Djurabekova, Flyura, Tuomisto, Filip |
| المساهمون: |
Department of Physics, Helsinki Institute of Physics |
| بيانات النشر: |
Elsevier Scientific Publ. Co |
| سنة النشر: |
2021 |
| المجموعة: |
Helsingfors Universitet: HELDA – Helsingin yliopiston digitaalinen arkisto |
| مصطلحات موضوعية: |
Density functional theory calculations, FORMATION ENTHALPY, High entropy alloys, INITIO MOLECULAR-DYNAMICS, IRRADIATION, Interstitials, POSITRON-ANNIHILATION, Positron annihilation, RADIATION-DAMAGE, SEMICONDUCTORS, SLUGGISH DIFFUSION, STRENGTH, TOTAL-ENERGY CALCULATIONS, TRACER DIFFUSION, Vacancy, Physical sciences |
| الوصف: |
We present evidence of homogenization of atomic diffusion properties caused by C and N interstitials in an equiatomic single-phase high entropy alloy (FeMnNiCoCr). This phenomenon is manifested by an unexpected interstitial-induced reduction and narrowing of the directly experimentally determined migration barrier distribution of mono-vacancy defects introduced by particle irradiation. Our observation by positron annihilation spectroscopy is explained by state-of-the-art theoretical calculations that predict preferential localization of C/N interstitials in regions rich in Mn and Cr, leading to a narrowing and reduction of the mono-vacancy size distribution in the random alloy. This phenomenon is likely to have a significant impact on the mechanical behavior under irradiation, as the local variations in elemental motion have a profound effect on the solute strengthening in high entropy alloys. (C) 2021 The Authors. Published by Elsevier Ltd on behalf of Acta Materialia Inc. ; Peer reviewed |
| نوع الوثيقة: |
article in journal/newspaper |
| وصف الملف: |
application/pdf |
| اللغة: |
English |
| Relation: |
Lu , E , Zhao , J , Makkonen , I , Mizohata , K , Li , Z , Hua , M , Djurabekova , F & Tuomisto , F 2021 , ' Enhancement of vacancy diffusion by C and N interstitials in the equiatomic FeMnNiCoCr high entropy alloy ' , Acta Materialia , vol. 215 , 117093 . https://doi.org/10.1016/j.actamat.2021.117093; RIS: urn:69A4FC5FF3417B3EC64DC67D9D96E611; ORCID: /0000-0002-5828-200X/work/99887911; ORCID: /0000-0003-1703-2247/work/99888300; ORCID: /0000-0003-4134-8428/work/99890682; ORCID: /0000-0002-6913-5654/work/99890689; ORCID: /0000-0001-8355-4612/work/99890748; http://hdl.handle.net/10138/334317; e2d2131a-5c5b-4649-a3fc-7a18e3b4369a; 85109584096; 000684229400056 |
| الاتاحة: |
http://hdl.handle.net/10138/334317 |
| Rights: |
cc_by ; info:eu-repo/semantics/openAccess ; openAccess |
| رقم الانضمام: |
edsbas.A187283F |
| قاعدة البيانات: |
BASE |