Skip to Main content Skip to Navigation
Journal articles

Inversion of dislocation loop nature driven by cluster migration in self-ion irradiated nickel

Abstract : Nickel is widely used as fcc model material to obtain insight into fundamental mechanisms of radiation damage. This work presents irradiation of high-purity nickel using self-ions at 450°C and fine analysis of dislocation loops in specimens prepared by Focus Ion Beam using Transmission Electron Microscopy. For the first time to our knowledge, a drastic change of both loop nature (vacancy-type in irradiated zones v.s. interstitial-type in unirradiated zones) and loop Burgers vector (1/3<111> and 1/2<110> loops v.s. only 1/2<110> loops) is identified along the implantation direction in irradiated nickel. This change may be attributed to the formation of interstitial <110> crowdions and their long-range 1D migration. A defect-free layer related to the annihilation of vacancy defects by injected atoms is detected. It provides an easy way to identify the injection peak in self-ion irradiated specimens and solid validation for damage calculations.
Document type :
Journal articles
Complete list of metadata

https://hal-cea.archives-ouvertes.fr/cea-03482273
Contributor : Contributeur MAP CEA Connect in order to contact the contributor
Submitted on : Wednesday, December 15, 2021 - 6:00:06 PM
Last modification on : Tuesday, June 14, 2022 - 11:52:53 AM
Long-term archiving on: : Wednesday, March 16, 2022 - 7:37:23 PM

File

VF_Scripta Mat_Revision_cleane...
Files produced by the author(s)

Identifiers

Citation

Kan Ma, Brigitte Décamps, Anna Fraczkiewicz, Frédéric Prima, Marie Loyer-Prost. Inversion of dislocation loop nature driven by cluster migration in self-ion irradiated nickel. Scripta Materialia, Elsevier, 2021, 208, pp.114338. ⟨10.1016/j.scriptamat.2021.114338⟩. ⟨cea-03482273⟩

Share

Metrics

Record views

30

Files downloads

66