Effect of interstitial carbon on the evolution of early-stage irradiation damage in equiatomic FeMnNiCoCr high-entropy alloys

Research output: Contribution to journalArticleScientificpeer-review

Abstract

Owing to their excellent radiation tolerance, some of the high-entropy alloys (HEAs) are considered as potential candidates for structural
materials in extreme conditions. In order to shed light on the early-stage irradiation damage in HEAs, we performed positron annihilation
spectroscopy on hydrogen implanted equiatomic FeMnNiCoCr and interstitial carbon-containing FeMnNiCoCr HEAs. We reveal primary
damage as monovacancies in low dose irradiated HEAs. The enhancement of Frenkel pair recombination by C addition is observed in
C-containing HEAs. In addition, the C interstitials suppress the vacancy cluster formation in high dose irradiated HEAs.
Original languageEnglish
JournalJournal of Applied Physics
Volume127
Issue number025103
ISSN0021-8979
Publication statusPublished - 9 Jan 2020
MoE publication typeA1 Journal article-refereed

Cite this

@article{b04511b0558b4ab78bfe25e55bbf487f,
title = "Effect of interstitial carbon on the evolution of early-stage irradiation damage in equiatomic FeMnNiCoCr high-entropy alloys",
abstract = "Owing to their excellent radiation tolerance, some of the high-entropy alloys (HEAs) are considered as potential candidates for structuralmaterials in extreme conditions. In order to shed light on the early-stage irradiation damage in HEAs, we performed positron annihilationspectroscopy on hydrogen implanted equiatomic FeMnNiCoCr and interstitial carbon-containing FeMnNiCoCr HEAs. We reveal primarydamage as monovacancies in low dose irradiated HEAs. The enhancement of Frenkel pair recombination by C addition is observed inC-containing HEAs. In addition, the C interstitials suppress the vacancy cluster formation in high dose irradiated HEAs.",
author = "Eryang Lu and Ilja Makkonen and Kenichiro Mizohata and Jyrki R{\"a}is{\"a}nen and Filip Tuomisto",
year = "2020",
month = "1",
day = "9",
language = "English",
volume = "127",
journal = "Journal of Applied Physics",
issn = "0021-8979",
publisher = "AVS",
number = "025103",

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TY - JOUR

T1 - Effect of interstitial carbon on the evolution of early-stage irradiation damage in equiatomic FeMnNiCoCr high-entropy alloys

AU - Lu, Eryang

AU - Makkonen, Ilja

AU - Mizohata, Kenichiro

AU - Räisänen, Jyrki

AU - Tuomisto, Filip

PY - 2020/1/9

Y1 - 2020/1/9

N2 - Owing to their excellent radiation tolerance, some of the high-entropy alloys (HEAs) are considered as potential candidates for structuralmaterials in extreme conditions. In order to shed light on the early-stage irradiation damage in HEAs, we performed positron annihilationspectroscopy on hydrogen implanted equiatomic FeMnNiCoCr and interstitial carbon-containing FeMnNiCoCr HEAs. We reveal primarydamage as monovacancies in low dose irradiated HEAs. The enhancement of Frenkel pair recombination by C addition is observed inC-containing HEAs. In addition, the C interstitials suppress the vacancy cluster formation in high dose irradiated HEAs.

AB - Owing to their excellent radiation tolerance, some of the high-entropy alloys (HEAs) are considered as potential candidates for structuralmaterials in extreme conditions. In order to shed light on the early-stage irradiation damage in HEAs, we performed positron annihilationspectroscopy on hydrogen implanted equiatomic FeMnNiCoCr and interstitial carbon-containing FeMnNiCoCr HEAs. We reveal primarydamage as monovacancies in low dose irradiated HEAs. The enhancement of Frenkel pair recombination by C addition is observed inC-containing HEAs. In addition, the C interstitials suppress the vacancy cluster formation in high dose irradiated HEAs.

M3 - Article

VL - 127

JO - Journal of Applied Physics

JF - Journal of Applied Physics

SN - 0021-8979

IS - 025103

ER -