Hydrogen trapping behavior at vacancies introduced by electron irradiation in B2 ordered Fe base alloys

Fuminobu Hori; Yuuga Sumikura; Kento Sugita; Yasuyuki Kaneno; Kazuhito Ohsawa; Xu Qiu; Masaki Maekawa; Atsuo Kawasuso; Yuichi Saito

doi:10.56646/jjapcp.9.0_011107

4th Japan-China Joint Workshop on Positron Science (JWPS2019)

Session ID : 011107

DOI https://doi.org/10.56646/jjapcp.9.0_011107

Conference information

Host: The organizing committee of JWPS2019

Name : 4th Japan-China Joint Workshop on Positron Science (JWPS2019)

Location : Nara, Japan

Date : October 28, 2019 - November 02, 2019

Metals and semiconductors

Hydrogen trapping behavior at vacancies introduced by electron irradiation in B2 ordered Fe base alloys

Fuminobu Hori, Yuuga Sumikura, Kento Sugita, Yasuyuki Kaneno, Kazuhito Ohsawa, Xu Qiu, Masaki Maekawa, Atsuo Kawasuso, Yuichi Saito

Author information

Fuminobu Hori
Osaka Metropolitan University, 1–2 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8570, Japan
Yuuga Sumikura
Osaka Metropolitan University, 1–2 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8570, Japan
Kento Sugita
Osaka Metropolitan University, 1–2 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8570, Japan
Yasuyuki Kaneno
Osaka Metropolitan University, 1–2 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8570, Japan
Kazuhito Ohsawa
Research Institute for Applied Mechanics, Kyushu University, Kasuga-koen 6–1, Kasuga, Fukuoka 845–8580, Japan
Xu Qiu
Institute for Integrated Radiation and Nuclear Science, Kyoto University, Kumatori, Sennan-gun, Osaka 890–0494, Japan
Masaki Maekawa
National Institute for Quantum and Radiological Science and Technology, Takasaki, Gunma 370–1292, Japan
Atsuo Kawasuso
National Institute for Quantum and Radiological Science and Technology, Takasaki, Gunma 370–1292, Japan
Yuichi Saito
National Institute for Quantum and Radiological Science and Technology, Takasaki, Gunma 370–1292, Japan

CONFERENCE PROCEEDINGS OPEN ACCESS

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Abstract

We have investigated the hydrogen trapping behavior in B2 ordered Fe-50%Al alloy with electron irradiation followed by hydrogen implantation by using positron annihilation techniques, X-ray diffraction and thermal desorption spectrometry (TDS). Positron annihilation lifetime and coincidence Doppler broadening measurement results showed that V_Fe in B2 type Fe-Al alloys are dominantly introduced by low energy (2 MeV) electron irradiation, and more complex vacancy type defects are formed by high energy (8 MeV) electron irradiation. The result of TDS measurement showed that hydrogen atoms are trapped by vacancy type defects, the resulting hydrogen desorption behavior is different for 2 MeV and 8 MeV irradiation cases.

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