In situ observation of defect annihilation in Kr ion-irradiated bulk Fe/amorphous-Fe2Zr nanocomposite alloy

K. Y. Yu, Z. Fan, Y. Chen, M. Song, Y. Liu, H. Wang, M. A. Kirk, M. Li, X. Zhang

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

Enhanced irradiation tolerance in crystalline multilayers has received significant attention lately. However, little is known on the irradiation response of crystal/amorphous nanolayers.We report on in situ Kr ion irradiation studies of a bulk Fe96Zr4 nanocomposite alloy. Irradiation resulted in amorphization of Fe2Zr and formed crystal/amorphous nanolayers. α-Fe layers exhibited drastically lower defect density and size than those in large α-Fe grains. In situ video revealed that mobile dislocation loops in α-Fe layers were confined by the crystal/amorphous interfaces and kept migrating to annihilate other defects. This study provides new insights on the design of irradiation-tolerant crystal/amorphous nanocomposites.

Original languageEnglish (US)
Pages (from-to)35-42
Number of pages8
JournalMaterials Research Letters
Volume3
Issue number1
DOIs
StatePublished - Aug 26 2014

Bibliographical note

Publisher Copyright:
© 2014 The Author(s). Published by Taylor & Francis.

Keywords

  • Absorption
  • Annihilation
  • Defect cluster
  • Heavy ion irradiation

Fingerprint

Dive into the research topics of 'In situ observation of defect annihilation in Kr ion-irradiated bulk Fe/amorphous-Fe2Zr nanocomposite alloy'. Together they form a unique fingerprint.

Cite this