Ta/Zr接合界面における水素脆化防止に対する施工指針の提案 : SUS304ULC/Ta/Zr爆発接合継手の水素脆化に関する研究 Proposal of Guideline for Bonding to Prevention of Hydrogen Embrittlement at Ta/Zr Bond Interface : Hydrogen Embrittlement in SUS304ULC/Ta/Zr Explosive Bonded Joint
The occurrence condition of hydrogen embrittlement cracking at Ta/Zr bond interface was investigated with respect to the hydrogen content and applied stress in order to propose a guideline for the explosive bonding procedure to prevention of hydrogen embrittlement. Hydrogen charging test was conducted for SUS304ULC/Ta/Zr explosive bonded joints applied the different flexural strains. A hydrogen embrittlement crack occurred in the Zr substrate at Ta/Zr bond interface after hydrogen charging, and it was initiated at shorter charging times when the augmented strain was increased. The occurrence condition of hydrogen embrittlement cracking at Ta/Zr bond interface was shifted to lower stress and hydrogen content with an increase in the amount of explosive during bonding. It was suggested that hydrogen embrittlement in Ta/Zr explosive bonded joint could be inhibited by reducing the initial hydrogen content in Ta substrate less than approx. 5ppm.
- 溶接学会論文集 : quarterly journal of the Japan Welding Society
溶接学会論文集 : quarterly journal of the Japan Welding Society 28(2), 248-254, 2010-12-31