Effect of cyclic temperature change on microstructural evolution in austenitic stainless steels under fission neutron irradiation

N. Yoshida, Q. Xu, H. Watanabe, Y. Miyamoto, T. Muroga

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

To understand mechanistically the influence of cyclic temperature change on microstructural evolution in Fe-Cr-Ni austenitic alloys, temperature-cycle neutron irradiations of 473 K/673 K and 573 K/723 K were carried out at JMTR (0.9-1.4 × 1024 n/m2 (> 1.0 MeV)). Suppression of interstitial loop formation was remarkable. Only a few large voids were formed in Fe-Cr-Ni and Fe-Cr-Ni-P alloys, but unexpectedly large void swelling (1.5-1.6%, 9-11%/dpa) was observed in Fe-Cr-Ni-Ti alloy. Rate theory of defect clustering for temperature-variant irradiation indicates that vacancy-rich condition appears temporarily at the beginning of the high-temperature period due to the reclustering of the vacancies formed in the low-temperature period through the reactions with radiation-induced vacancies and interstitials.

Original languageEnglish
Pages (from-to)471-475
Number of pages5
JournalJournal of Nuclear Materials
Volume212-215
Issue numberPART 1
DOIs
Publication statusPublished - Sep 1994

Fingerprint

Neutron irradiation
austenitic stainless steels
Microstructural evolution
neutron irradiation
Austenitic stainless steel
fission
voids
interstitials
Vacancies
swelling
Temperature
temperature
retarding
cycles
irradiation
defects
Swelling
radiation
Irradiation
Radiation

All Science Journal Classification (ASJC) codes

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

Cite this

Effect of cyclic temperature change on microstructural evolution in austenitic stainless steels under fission neutron irradiation. / Yoshida, N.; Xu, Q.; Watanabe, H.; Miyamoto, Y.; Muroga, T.

In: Journal of Nuclear Materials, Vol. 212-215, No. PART 1, 09.1994, p. 471-475.

Research output: Contribution to journalArticle

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