Evaluation of strain-rate sensitivity of ion-irradiated austenitic steel using strain-rate jump nanoindentation tests

Ryuta Kasada, Satoshi Konishi, Dai Hamaguchi, Masami Ando, Hiroyasu Tanigawa

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

The present study investigated strain-rate sensitivity (SRS) of a single crystal Fe–15Cr–20Ni austenitic steel before and after 10.5 MeV Fe3+ ion-irradiation up to 10 dpa at 300 °C using a strain-rate jump (SRJ) nanoindentation test. It was found that the SRJ nanoindentation test is suitable for evaluating the SRS at strain-rates from 0.001 to 0.2 s−1. Indentation size effect was observed for depth dependence of nanoindentation hardness but not the SRS. The ion-irradiation increased the hardness at the shallow depth region but decreased the SRS slightly.

Original languageEnglish
Pages (from-to)1507-1510
Number of pages4
JournalFusion Engineering and Design
Volume109-111
DOIs
Publication statusPublished - 2016 Jan 1
Externally publishedYes

Keywords

  • Ion irradiation
  • Irradiation hardening
  • Nanoindentation
  • Strain rate
  • Structural material

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Nuclear Energy and Engineering
  • Materials Science(all)
  • Mechanical Engineering

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