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  1. 400 金属材料研究所
  2. 東北大学研究所報告. A集, 物理学・化学・冶金学

The Precipitation of χ-carbide in the Tempering Process of High Carbon Steels

http://hdl.handle.net/10097/27713
http://hdl.handle.net/10097/27713
24d6580d-9b8d-48bb-82c5-04ec7ba137ca
名前 / ファイル ライセンス アクション
KJ00004197934.pdf KJ00004197934.pdf (56.0 kB)
Item type 紀要論文 / Departmental Bulletin Paper(1)
公開日 2008-05-02
タイトル
タイトル The Precipitation of χ-carbide in the Tempering Process of High Carbon Steels
言語
言語 eng
資源タイプ
資源タイプ識別子 http://purl.org/coar/resource_type/c_6501
資源タイプ departmental bulletin paper
著者 IMAI, Yunoshin

× IMAI, Yunoshin

IMAI, Yunoshin

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OGURA, Tsugio

× OGURA, Tsugio

OGURA, Tsugio

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INOUE, Akihisa

× INOUE, Akihisa

INOUE, Akihisa

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抄録
内容記述タイプ Abstract
内容記述 To make clear the precipitation behaviour of iron-carbides, especially to show if χ-carbide precipitates or not, in the tempering process of steels, observations were made by transmission electron microscopy on some quenched and tempered high carbon steels containing 0.86, 1.11, and 1.34 wt% carbon. Thermomagnetic and thermal dilatational measurements were also made for comparison's sake. The main results obtained are summarized as follows : (1) In the high carbon steels tempered under appropriate conditions, χ-carbide was observed by transmission electron microscopy. (2) The habit plane of χ-carbide was determined to be {112}_α, suggesting that the carbide may precipitate preferentially on twin boundary in martensite. (3) In electron micrographs, the morphology and the growth direction of χ-carbide were different from those of ε-carbide, but were very similar to those of θ-carbide which precipitates on {112}_α. From these observations, it was supposed that the transitions of ε→χ andχ→θ were due to a separate nucleation and an in situ transformation, respectively. θ-carbide precipitated on {110}_α was also found, suggesting the precipitation to take place by a separate nucleation directly from ε-carbide. (4) Using indices of main crystal planes and a direction in χ-carbide, i.e., (100)_x, (010)_x, and [001]_x, the orientation relationship of the carbide with ferrite matrix was expressed as (100)_x//(121)_α, (010)_x//(101)_α, and [001]_x//[111]_α. (5) The precipitation of χ-carbide was also detected by thermomagnetic and thermal dilatational measurements on the high carbon steels tempered under the most favourable condition to obtain χ-carbide.
書誌情報 Science reports of the Research Institutes, Tohoku University. Ser. A, Physics, chemistry and metallurgy

巻 25, p. 102-102, 発行日 1974
ISSN
収録物識別子タイプ ISSN
収録物識別子 00408808
書誌レコードID
収録物識別子タイプ NCID
収録物識別子 AA00836167
フォーマット
内容記述タイプ Other
内容記述 application/pdf
著者版フラグ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
出版者
出版者 Tohoku University
資源タイプ
内容記述タイプ Other
内容記述 紀要類(bulletin)
登録日
日付 2008-05-02
日付タイプ Created
公開日(投稿完了日)
日付 2008-05-02
日付タイプ Created
発行日
日付 1974
日付タイプ Created
フォーマット
内容記述タイプ Other
内容記述 55970 bytes
更新日
日付 2010-01-27
日付タイプ Created
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