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Crystallization Process of Iron-, Nickel-, and Cobalt-Based Amorphous Alloys Containing Silicon and Boron (Metallurgy)
http://hdl.handle.net/10097/28055
http://hdl.handle.net/10097/2805570e6ad53-e6f9-4b8f-8d26-5c903c01beaf
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
KJ00004394167.pdf (78.8 kB)
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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 | Crystallization Process of Iron-, Nickel-, and Cobalt-Based Amorphous Alloys Containing Silicon and Boron (Metallurgy) | |||||||||||
| 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 |
MASUMOTO, Tsuyoshi
× MASUMOTO, Tsuyoshi
× INOUE, Akihisa
× KIMURA, Hisamichi
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| 抄録 | ||||||||||||
| 内容記述タイプ | Abstract | |||||||||||
| 内容記述 | Structural changes during heating or aging in a wide temperature range were exmained with three amorphous alloys of Fe_<78>Si_<10>B_<12>, Ni_<75>S_8B_<17> and Co_<75>Si_<15>B_<10> by measurements of electrical resistance, differential scanning calorie and Vickers hardness and also by transmission electron microscopy and X-ray diffraction. The results obtained are summarized as follows : (1) The crystallization process of three amorphous alloys is divided into four stages : (a) the incipient stage of crystallization where a certain short range ordering of atoms occurs, (b) the formation of primary metastable phases (MS-I), (c) the formation of secondary metastable phase (MS-II) with complex single structures, and (d) the formation of a stable phase consisting of a mixture of each equilibrium phase. The MS-I phase appears in the amorphous matrix in a manner of homogeneous nucleation and gradual growth, while the MS-II phase grows rapidly from a few nuclei and completely spreads over the amorphous matrix containing the MS-I phases. At higher temperatures, these MS-II phases transform finally to stable phases. (2) The temperature-time-transformation diagrams of three alloys were constructed. In these diagrams, distinct differences in the transformation sequence and the mode are observable in the upper and lower ranges of the critical temperature (Tx'). Above this boundary, crystallization by way of nucleation and growth proceeds through two metastable phases and finally to a stable phase. Below that temperature, on the other hand, progressive aging gradually changes the amorphous structure to the assembly of fine grains (about 100～200A) with a simple structure such as bcc, fcc, or hcp. | |||||||||||
| 書誌情報 |
Science reports of the Research Institutes, Tohoku University. Ser. A, Physics, chemistry and metallurgy 巻 27, p. 89-89, 発行日 1979 |
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| 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 | 1979 | |||||||||||
| 日付タイプ | Created | |||||||||||
| フォーマット | ||||||||||||
| 内容記述タイプ | Other | |||||||||||
| 内容記述 | 78830 bytes | |||||||||||
| 更新日 | ||||||||||||
| 日付 | 2010-01-27 | |||||||||||
| 日付タイプ | Created | |||||||||||
