The effect of final heat treatment temperature on radiation response of V-4Cr-4Ti

T. Muroga, T. Nagasaka, H. Watanabe, M. Yamazaki

Research output: Contribution to journalArticle

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Abstract

Neutron irradiation in JMTR at 673 K to ∼0.11 dpa and post-irradiation examinations were carried out on V-4Cr-4Ti (NIFS-HEAT-2) heat-treated at 1073-1373 K for 1 h, for the purpose of optimizing the heat treatment conditions considering the effect of neutron irradiation. After irradiation, hardness and Charpy impact properties were similar with each other at 1073-1273 K, which is in strong contrast with the unirradiated V-4Cr-4Ti, which showed clearly minimum hardness and optimum impact property at 1173 K. Significant hardening and an increase in DBTT occurred after irradiation, however, at 1373 K. TEM observations showed similar microstructure with high density of precipitates and very low dislocation density at 1173-1273 K following irradiation. The mechanism of the weak dependence of properties after irradiation for the heat treatment temperatures between 1073 and 1273 and implication of the present study to determining annealing temperature was discussed.

Original languageEnglish
Pages (from-to)310-313
Number of pages4
JournalJournal of Nuclear Materials
Volume417
Issue number1-3
DOIs
Publication statusPublished - Oct 1 2011

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heat treatment
Heat treatment
Irradiation
Radiation
irradiation
radiation
Neutron irradiation
neutron irradiation
hardness
Temperature
Hardness
temperature
hardening
Hardening
Precipitates
precipitates
examination
Annealing
Transmission electron microscopy
heat

All Science Journal Classification (ASJC) codes

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

Cite this

The effect of final heat treatment temperature on radiation response of V-4Cr-4Ti. / Muroga, T.; Nagasaka, T.; Watanabe, H.; Yamazaki, M.

In: Journal of Nuclear Materials, Vol. 417, No. 1-3, 01.10.2011, p. 310-313.

Research output: Contribution to journalArticle

Muroga, T. ; Nagasaka, T. ; Watanabe, H. ; Yamazaki, M. / The effect of final heat treatment temperature on radiation response of V-4Cr-4Ti. In: Journal of Nuclear Materials. 2011 ; Vol. 417, No. 1-3. pp. 310-313.
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