Changes in mechanical properties of high-purity V-4Cr-4Ti-Si, Al, y alloys after neutron irradiation at relatively low temperatures

Toshinori Chuto, Manabu Satou, Akira Hasegawa, Katsunori Abe, Takeo Muroga, Norikazu Yamamoto

Research output: Contribution to journalConference articlepeer-review

5 Citations (Scopus)

Abstract

Mechanical properties after neutron irradiation of V-4Cr-4Ti-0.1Si-0.1Al-0.1Y and V-4Cr-4Ti-0.1Si-0.1Al-0.3Y alloys (nominal weight percentage) were studied. Neutron irradiation was carried out at 290°C to 8×1022 n/m2 (E>1 MeV, about 0.014 dpa) in the Japan Materials Testing Reactor (JMTR). Tensile tests were carried out using miniaturized specimens at ambient temperature and irradiation temperature. Charpy impact tests were conducted at temperatures from -196 to 0°C using an instrumented machine. There is little difference in tensile properties after neutron irradiation between the two alloys. Increase in yield stress was relatively small (∼100 MPa), and uniform elongation remained more than 10%. Because of a low concentration of interstitial impurities, good tensile properties could be retained even after neutron irradiation at 290°C. Ductile-to-brittle transition temperature (DBTT) of V-4Cr-4Ti-0.1Si-0.1Al-0.1Y alloys hardly changed, whereas absorbed energy was slightly reduced after neutron irradiation.

Original languageEnglish
Pages (from-to)693-701
Number of pages9
JournalASTM Special Technical Publication
Issue number1447
Publication statusPublished - 2004 Jan 1
EventEffects of Radiation on Materials: 21st International Symposium - Tucson, AZ, United States
Duration: 2002 Jun 182002 Jun 20

Keywords

  • Impact properties
  • Neutron irradiation
  • Tensile properties
  • Vanadium alloy

ASJC Scopus subject areas

  • Engineering(all)

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