1. Mechanical properties of JLF-1 reduced-activation ferritic steels
- Author
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Akira Kohyama, Ryuta Kasada, Hideo Sakesegawa, Hironobu Ono, Takanori Hirose, and Akihiko Kimura
- Subjects
Nuclear and High Energy Physics ,Materials science ,020209 energy ,Mechanical Engineering ,Metallurgy ,02 engineering and technology ,Fusion power ,Microstructure ,01 natural sciences ,010305 fluids & plasmas ,Nuclear Energy and Engineering ,0103 physical sciences ,Ultimate tensile strength ,0202 electrical engineering, electronic engineering, information engineering ,General Materials Science ,Irradiation ,Material properties ,Civil and Structural Engineering - Abstract
To improve material properties of reduced-activation ferritic steels, mechanical properties and microstructure of the steels with adjusting minor alloying elements, such as N, B, Ta, and Ti were investigated. If it became necessary to reduce N contents in the steels for nuclear consideration, B-addition would have the potential to produce a steel comparable, at least in terms of mechanical properties before irradiation, to the JLF-1 IEA heat. Increasing the Ta contents could induce further grain refinement in the JLF-1 steel, but had no significant effect on the tensile and impact properties.