Specimen size effects on fracture toughness of JLF-1 reduced-activation ferritic steel

H. Ono, R. Kasada, A. Kimura

研究成果: Conference article

42 引用 (Scopus)

抜粋

Four different sizes of compact tension (CT) specimens of a reduced activation ferritic steel, JLF-1 steel, were fabricated and the fracture toughness was measured at room temperature by means of the unloading compliance method referring to in the ASTM E1820-99a. The JQ values obtained for the 1T-1CT and 1/2T-1CT specimens were 404 and 623 kJ/m2, respectively, indicating that the JQ value increased with decreasing the specimen thickness. On the other hand, the JQ value decreased when specimens were miniaturized while maintaining the similar proportions. The JQ values for the 1/2CT and 1/4CT specimens were 371 and 321 kJ/m2, respectively. Specimen size effects are interpreted in terms of an increase in the plain stress state region and plastic zone size at the crack tip in the specimen.

元の言語English
ページ(範囲)1117-1121
ページ数5
ジャーナルJournal of Nuclear Materials
329-333
発行部数1-3 PART B
DOI
出版物ステータスPublished - 2004 8 1
外部発表Yes
イベントProceedings of the 11th Conference on Fusion Research - Kyoto, Japan
継続期間: 2003 12 72003 12 12

ASJC Scopus subject areas

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

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