High-Temperature Helium Embrittlement of 316FR Steel

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概要

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• The helium embrittlement behavior of 316FR austenitic stainless steel was investigated by a tensile test at 750°C using miniature tensile specimens, which were helium-implanted below 100°C up to 5, 30, and 100 appm using a cyclotron accelerator, and were post-implantation-annealed at 750°C for 10 and 100 h. The helium-implanted specimens showed a fully intergranular fracture regardless of the helium concentration and annealing time. No microstructural changes in the as-implanted specimen up to 30 appm and formation of a small number of helium bubbles due to the post-implantation annealing were observed. The gradual release of the helium during the tensile test started after the yielding, and a sharp peak of the helium release was detected in the final fracture phase. The total number of helium atoms released was strongly dependent on the implanted helium concentration, rather than on the annealing time.

• 2011-01-01

著者

• NOGAMI Shuhei

  Department of Quantum Science and Energy Engineering, Tohoku University

• HASEGAWA Akira

  Department of Quantum Science and Energy Engineering, Tohoku University

• Nogami Shuhei

  Department Of Quantum Science And Energy Engineering Tohoku University

• TANNO Takashi

  Department of Quantum Science and Energy Engineering, Tohoku University

• IMASAKI Kazuto

  Department of Quantum Science and Energy Engineering, Tohoku University

• ABE Kazuma

  Department of Quantum Science and Energy Engineering, Tohoku University

• Hasegawa A

  Niigata Univ. Niigata

• Hasegawa A

  Department Of Applied Bioorganic Chemistry Gifu University

• Abe Kazuma

  Dep. Of Quantum Sci. And Energy Engineering Tohoku Univ.

• Hasegawa Akira

  Department Of Applied Bioorganic Chemistry Gifu University

• Takahashi Toshitsugu

  Department Of Quantum Science And Energy Engineering Graduate School Of Engineering Tohoku Universit

• Hasegawa Akira

  Department Of Physics Saga University

• Nogami Shuhei

  Department Of Quantum Science And Energy Engineering Graduate School Of Engineering Tohoku Universit

• Imasaki Kazuto

  Department Of Quantum Science And Energy Engineering Tohoku University

• Hasegawa Akira

  Department Of Agricultural Chemistry Kyoto University

• Hasegawa Akira

  Departmemt Of Information And Imaging Sciences Faculty Of Engineering Chiba University

• Tanno Takashi

  Department Of Quantum Science And Energy Engineering Tohoku University

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