高マンガン大洲田鋼の加熱による組織及性質の變化

• 資料種別: 記事
• タイトル: 高マンガン大洲田鋼の加熱による組織及性質の變化
• 著者標目: 村上 武次郎; 三神 正苗
• 出版年月日等: 1931
• 出版年（W3CDTF）: 1931
• タイトル（掲載誌）: 鉄と鋼
• 巻号年月日等（掲載誌）: 17 3
• 掲載巻: 17
• 掲載号: 3
• 掲載ページ: 205-226
• 掲載年月日（W3CDTF）: 1931
• ISSN（掲載誌）: 00211575
• 出版事項（掲載誌）: The Iron and Steel Institute of Japan
• 件名標目: Materials Chemistry; Metals and Alloys; Physical and Theoretical Chemistry; Condensed Matter Physics
• 対象利用者: 一般
• DOI: 10.2355/tetsutohagane1915.17.3_205; https://doi.org/10.2355/tetsutohagane1915.17.3_205
• 関連情報（URI）: https://www.jstage.jst.go.jp/article/tetsutohagane1915/17/3/17_3_205/_pdf
• 参照: Changes in the Internal Friction of an AustenitebHigh Manganese Steel by Annealing; https://cir.nii.ac.jp/crid/1390282680094873984
• 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; Crossref; https://www.crossref.org; CiNii Articles
• NII論文ID: 110001869310

• 要約等: A high manganese austenitic steel with 12·74% Mn and 1·19%C, obtained by quenching in water from 1000°, was heated at several temperatures from 400° to 700°, for various lengths of time upto 50 hours. during which the change of microstructure, density, hardness and magnetization was studied. In microstructure, the following changes take place:-(1) separation of carbide, (2) formation of troostite (nodulus), (3) formation of martensite, (4) formation of troostite (acicular) from martensite. The separation of carbide firstly takes place; as the heating temperature rises, the rate of separation increases, though the quantity of the carbide decreases, on account of an increase of the solubility. The formation of troostite (nodulus) and martensite take place in temperature ranges, 420°-680°, and 420°-600°, respectively; in the early stage of heating, the changes proceed most readily in the vicinity of 550°, and as the heating time increases, the temperature at which the change is maximum shifts gradually to the lower temperature. The acicular troostite is formed in the temperatures above 500° from the martensite. The density increases with the separation of carbide and the formation of troostite, but decreases with that of martensite. The hardness increases with the formation of carbide and martensite, but decreases with that of troostite. Magnetization increases with the format on of martensite and troostite, though no change is observable with the separation of carbide. From these facts the process of tempering of the austenite at several temperatures was inferred. The troostites, nodulus and acicular, are formed by different mechanism, that is, the former is formed by the Ar<SUB>1</SUB> change as the pearlite, while the latter is formed by tempering of martensite after long heating. According to Tammann's theory, the experimental results obtained were well explained. By means of the differential, dilatometer, the Ac<SUB>1</SUB> range was determined to be 530°-680°.
• DOI: 10.2355/tetsutohagane1915.17.3_205
• オンライン閲覧公開範囲: インターネット公開
• 連携機関・データベース: 科学技術振興機構 : J-STAGE; http://www.jstage.jst.go.jp