フェライト組織鋼の靭性に及ぼすCの存在状態と固溶Nの影響

• 資料種別: 記事
• タイトル: フェライト組織鋼の靭性に及ぼすCの存在状態と固溶Nの影響
• 著者・編者: 吉村 信幸; 潮田 浩作; 白幡 浩幸; 星野 学; 重里 元一; 田中 將己
• 著者標目: 吉村 信幸; 潮田 浩作; 白幡 浩幸; 星野 学; 重里 元一; 田中 將己
• 並列タイトル等: Effects of States of Carbon and Solute Nitrogen on Toughness of Ferritic Steel
• タイトル（掲載誌）: 鉄と鋼 / 日本鉄鋼協会 編
• 巻号年月日等（掲載誌）: 108(2):2022
• 掲載巻: 108
• 掲載号: 2
• 掲載ページ: 141-155
• 掲載年月日（W3CDTF）: 2022
• ISSN（掲載誌）: 0021-1575
• ISSN-L（掲載誌）: 0021-1575
• 出版事項（掲載誌）: 東京 : 日本鉄鋼協会
• 出版地（国名コード）: JP
• 本文の言語コード: jpn
• 件名標目: steel; toughness; ferrite; carbon; nitrogen; inter-granular cementite; intra-granular cementite; brittle fracture; twin; inter-granular fracture; intra-granular fracture
• NDLC: ZP42
• 対象利用者: 一般
• 所蔵機関: 国立国会図書館
• 請求記号: Z17-356
• 連携機関・データベース: 国立国会図書館 : 国立国会図書館雑誌記事索引; https://ndlsearch.ndl.go.jp
• 書誌ID（NDLBibID）: 031952710; http://id.ndl.go.jp/bib/031952710
• 整理区分コード: 632

• 要約等: <p>To develop microstructure control concepts for ensuring the toughness of high-strength steel plates, basic research was conducted using ferrite single-phase steels with different amounts of C, and the effects of the states of C were investigated along with those of solute N. In this study, Fe-0.017C (mass%) alloy, wherein the state of C was changed to a solid solution, intragranular cementite, and intergranular cementite, were used for microstructural observation, Charpy testing, and fracture surface investigation. The results reveal that the toughness of the intragranular cementite steel was the best, followed by that of solute C steel and intergranular cementite steel. In intergranular cementite steel with significantly inferior toughness, the coarse intergranular cementite leads to dislocation pile-up, initial crack formation, and macroscopic brittle fracture. The brittle fracture of intragranular cementite steel was caused by the deformation twins. It is thought that the fine intragranular cementite only had a minor effect on the crack initiation and dislocation mobility. Twin was also confirmed at the initiation point of brittle fracture in the solute C steel. Hence, it was deduced that the deterioration of toughness caused by solute C resulted from the promotion of twinning, which replaced the dislocation movements. However, the deterioration of toughness caused by solute C was smaller compared with that caused by solute N, which partly caused intergranular fracture. This is attributed to the suppression of intergranular fracture by the presence of a small amount of solute C.</p>
• DOI: 10.2355/tetsutohagane.tetsu-2021-076; https://doi.org/10.2355/tetsutohagane.tetsu-2021-076; 10.2355/isijinternational.isijint-2023-027; https://doi.org/10.2355/isijinternational.isijint-2023-027
• オンライン閲覧公開範囲: インターネット公開
• 関連情報（URI）: http://id.ndl.go.jp/bib/031952710; https://ndlsearch.ndl.go.jp/books/R000000004-I031952710; https://www.jstage.jst.go.jp/article/tetsutohagane/108/2/108_TETSU-2021-076/_pdf; https://www.jstage.jst.go.jp/article/isijinternational/63/6/63_ISIJINT-2023-027/_pdf
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• 連携機関・データベース: 国立情報学研究所 : CiNii Research; https://cir.nii.ac.jp/
• 提供元機関・データベース: Japan Link Center; https://japanlinkcenter.org/top; 雑誌記事索引データベース; https://ndlsearch.ndl.go.jp; Crossref; https://www.crossref.org; CiNii Articles
• 書誌ID（NDLBibID）: 031952710; http://id.ndl.go.jp/bib/031952710
• NII論文ID: 130008149095