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The Precipitation of χ-carbide in the Tempering Process of High Carbon Steels
http://hdl.handle.net/10097/27713
http://hdl.handle.net/10097/2771324d6580d-9b8d-48bb-82c5-04ec7ba137ca
名前 / ファイル | ライセンス | アクション |
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Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||||||||
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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
× OGURA, Tsugio
× 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 |
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収録物識別子タイプ | ISSN | |||||||||||
収録物識別子 | 00408808 | |||||||||||
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収録物識別子タイプ | NCID | |||||||||||
収録物識別子 | AA00836167 | |||||||||||
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内容記述タイプ | Other | |||||||||||
内容記述 | application/pdf | |||||||||||
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出版タイプ | VoR | |||||||||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||||||
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出版者 | Tohoku University | |||||||||||
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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 |