1605 ITERトロイダル磁場コイル用極低温構造材料の機械特性(OS16-2 核融合炉-多種多様な力学的環境における強度・設計問題)

概要

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This paper provides 4K tensile test results of a 316LN forged plate containing high nitrogen of 0.2 %, which is produced by a foreign steel company. Since the forged plate showed unifonn 4K strengths the foreign company could provide forgings to coil cases of the ITER Toroidal field coils in future. Quadratic curves to predict temperature dependence of yield and tensile strengths of 316LN, which are expressed as a function of carbon and nitrogen contents and strengths at room temperature, were verified by using 4K data of the forged plate tested in this study. It is concluded that the curves give good prediction and it can be used to specify the minimum strengths of 316LN. The results supports the basis of the material section of "Codes for Fusion Facilities - Rules on Superconducting Magnet Structure (2008)" issued by the Japan Society of Mechanical Engineers (JSME) in October 2008.
一般社団法人日本機械学会の論文
2010-10-09