316LNステンレス鋼の機械的特性に及ぼす窒素(N)の影響

• 石尾 光太郎

  (株)日本製鋼所室蘭研究所

• 中嶋 秀夫

  日本原子力研究所那珂研究所

書誌事項

タイトル別名

• Effects of Nitrogen on the Mechanical Propeties of 316LN Stainless Steels
• 316LN ステンレス コウ ノ キカイテキ トクセイ ニ オヨボス チッソ N ノ エイキョウ

抄録

Type 316LN stainless steel is one of the candidate structural materials for the low stress regions of the toroidal field coil for International Thermonuclear Experimental Reactor (ITER). It was confirmed that contribution of nitrogen to 0.2% yield strength of 316LN at 4K is more than that of carbon in a previous paper. ⁸⁾ However, it has never be investigated the tensile property of the 316LN, in which carbon content was controlled at low level and nitrogen content was varied. Therefore, it was systematically investigated the mechanical properties of the low carbon controlled 316LN, in which nitrogen content was varied in the wide range, at 4K, 77K, room temperature and high forging ternperatures. In consequence, it was confirmed that the cryogenic elongation of the specimens included the high nitrogen content over 0.221mass% was lower than an elongation-(T-M_d30) curve. T means tensile test temperature. In addition, the data of the reduction of area at 1373K were increased with increasing nitrogen content over 0.175mass%. It was inferred that these behaviors were influenced by enhance ment of dislocation density by super saturation of solution nitrogen.

収録刊行物

• 鉄と鋼

  鉄と鋼 92 (2), 90-96, 2006

  一般社団法人 日本鉄鋼協会

キーワード

• 316LN stainless steel
• 4K
• ITER
• superconducting magnet
• mechanical properties

詳細情報

• CRID: 1390001205183182976
• NII論文ID: 110003482898
• NII書誌ID: AN00151251
• DOI: 10.2355/tetsutohagane1955.92.2_90
• ISSN: 18832954
• ISSN: 00211575
• NDL書誌ID: 7809477
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7809477
• Web Site: https://www.jstage.jst.go.jp/article/tetsutohagane1955/92/2/92_2_90/_pdf
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