Effects of tensile stress on Cu clustering in irradiated Fe-Cu alloy

K. Fujii, K. Fukuya, R. Kasada, A. Kimura, T. Ohkubo

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

Effects of tensile stress on Cu clustering were explained using atom probe tomography (APT) results of Fe-0.6 wt.%Cu alloy specimens irradiated with 6.4 MeV Fe ions while applying a tensile stress of 60 MPa at room temperature (less than 50 °C) and 290 °C. The hardening under the tensile-stressed irradiation was smaller than that under the stress-free irradiation at both room temperature and 290 °C. APT results showed that well-defined Cu clusters were formed in all specimens even under the room temperature irradiation. The Cu clusters under the tensile-stressed condition were smaller and had higher densities than those under the stress-free condition. The lower Cu content in clusters and more diffuse Cu clustering were obtained for the specimens irradiated under the tensile-stressed condition. The hardening efficiency of Cu clusters was correlated with the Cu content in clusters and the coherency of interface between a cluster and the matrix. Application of tensile stress would control hardening by changing the nature of Cu clusters.

Original languageEnglish
Pages (from-to)281-287
Number of pages7
JournalJournal of Nuclear Materials
Volume458
DOIs
Publication statusPublished - 2015 Mar
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Materials Science(all)
  • Nuclear Energy and Engineering

Fingerprint

Dive into the research topics of 'Effects of tensile stress on Cu clustering in irradiated Fe-Cu alloy'. Together they form a unique fingerprint.

Cite this