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

Research output: Contribution to journalArticleScientificpeer-review


Research units

  • CAS - Institute of High Energy Physics
  • University of Helsinki
  • Max-Planck-Institut für Eisenforschung
  • Central South University


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
Article number025103
Pages (from-to)1-7
Number of pages7
JournalJournal of Applied Physics
Issue number2
Publication statusPublished - 14 Jan 2020
MoE publication typeA1 Journal article-refereed

ID: 40737238