Effects of neutron irradiation and thermal aging on mechanical properties of ODS ferritic steels for advanced nuclear systems

Ryuta Kasada, Hang Sik Cho, Naoyuki Okuda, Akihiko Kimura

研究成果: Conference contribution

3 被引用数 (Scopus)

抄録

Effects of neutron irradiation and thermal aging on the tensile properties and Charpy impact properties of oxide dispersion strengthened (ODS) ferritic steels for advanced nuclear systems were investigated and discussed with the results of microstructural observation. After the neutron irradiation in JMTR, significant hardening after irradiation at 290 and 400 °C as well as thermal aging at 500 °C, while no effect was observed after irradiation at 600 °C. While the irradiation hardening was not accompanied by a reduction of total elongation in tensile tests, Charpy impact energy at room temperature was reduced after the irradiation. The hardening after the irradiation at 400 °C and the aging at 500 °C was probably due to the formation of Cr-rich phases. The irradiation hardening observed in the ODS ferritic steels irradiated at 290 °C was well explained by the formation of dislocation loops.

本文言語English
ホスト出版物のタイトルSelected, peer reviewed papers from The Sixth Pacific Rim International Conference on Advanced Materials and Processing, PRICM 6
出版社Trans Tech Publications Ltd
ページ1773-1776
ページ数4
PART 3
ISBN(印刷版)0878494626, 9780878494620
DOI
出版ステータスPublished - 2007
外部発表はい
イベント6th Pacific Rim International Conference on Advanced Materials and Processing, PRICM 6 - Jeju, Korea, Republic of
継続期間: 2007 11月 52007 11月 9

出版物シリーズ

名前Materials Science Forum
番号PART 3
561-565
ISSN(印刷版)0255-5476
ISSN(電子版)1662-9752

Other

Other6th Pacific Rim International Conference on Advanced Materials and Processing, PRICM 6
国/地域Korea, Republic of
CityJeju
Period07/11/507/11/9

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

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