The Elevated Temperature and Thermal Shock Fracture Toughnesses of Nuclear Pressure Vessel Steel
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- HIRANO Kazumi
- Faculty of Engineering, Tokyo Institute of Technology
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- KOBAYASHI Hideo
- Faculty of Engineering, Tokyo Institute of Technology
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- NAKAZAWA Hajime
- Faculty of Engineering, Tokyo Institute of Technology
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- NARA Atsushi
- National Institute of Industrial Health
Bibliographic Information
- Other Title
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- 原子炉圧力容器鋼の高温および熱衝撃破壊じん性
- ゲンシロ アツリョク ヨウキ コウ ノ コウオン オヨビ ネツ ショウゲキ ハ
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Abstract
Thermal shock experiments were conducted on nuclear pressure vessel steel A533 Grade B Class 1. Elastic-plastic fracture toughness tests were carried out within the same high temperature range of the thermal shock experiment and the relation between stretched zone width, SZW and J-integral was clarified. An elastic-plastic thermal shock fracture toughness value, Jtsc was evaluated from a critical value of stretched zone width, SZWtsc at the initiation of thermal shock fracture by using the relation between SZW and J. The Jtsc value was compared with elastic-plastic fracture toughness values, JIc, and the deference between the Jtsc and JIc values was discussed.<br>The results obtained are summarized as follows;<br>(1) The relation between SZW and J before the initiation of stable crack growth in fracture toughness test at a high temperature can be expressed by the following equation regardless of test temperature, <br>SZW=95(J/E), <br>where E is Young's modulus.<br>(2) Elevated temperature fracture toughness values ranging from room temperature to 400°C are nearly constant regardless of test temperature. It is confirmed that upper shelf fracture toughness exists.<br>(3) Thermal shock fracture toughness is smaller than elevated temperature fracture toughness within the same high temperature range of thermal shock experiment.
Journal
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- Journal of the Society of Materials Science, Japan
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Journal of the Society of Materials Science, Japan 28 (308), 421-426, 1979
The Society of Materials Science, Japan
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Details 詳細情報について
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- CRID
- 1390282680394043392
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- NII Article ID
- 110002298121
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- NII Book ID
- AN00096175
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- ISSN
- 18807488
- 05145163
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- NDL BIB ID
- 2051704
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed