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Fatigue Properties of Zinc Single Crystals and Polycrystals. II : Surface Markings Produced by Fatigue
http://hdl.handle.net/10097/27150
http://hdl.handle.net/10097/271508a3634fd-f43d-4b8f-81e8-dd7c9a5c5750
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
KJ00004197074.pdf (55.0 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 | Fatigue Properties of Zinc Single Crystals and Polycrystals. II : Surface Markings Produced by Fatigue | |||||||
| 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 |
WATANABE, Jiro
× WATANABE, Jiro
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| 抄録 | ||||||||
| 内容記述タイプ | Abstract | |||||||
| 内容記述 | Surface markings including slip lines, twin bands, cracks, and other markings, have been observed metallographically on zinc single crystals with [0001], [1010] and [1120] orientations and polycrystals as fatigued at room temperature by a cantilever rotating-bending testing machine. The [0001] single crystals fatigue-fracture along basal cleavage planes, on which the{1012}twin bands, striated patterns, river patterns, and{1010}cleavage steps are found. Only a few basal slip lines are observed on the lateral surface adjacent to the fracture position of the [0001] crystals, proving their small plastic and fatigue properties. The fatigued [1010] and [1120] crystals show (0001) [1120] and{1122}<1123>slip lines and{1012}twins, although the former type of slip is due to the heterogeneous stress distribution in the catilever rotating-bending fatigue test, and their fracture surfaces show stepped structures formed by alternative cleavages along the (1010) planes of the matrix and along the (0001) planes of twin crystals. The fatigued polycrystals show a transcrystalline fracture and, the characteristic surface markings observed on single crystals. No difference in markings in variously stressed specimens could be detected due to their fatigue-poor properties. It was found that no surface markings could be observed on single crystals stressed below the endurance limit, which is in accordance with the conclusion, reported by the author in a previous paper, that the endurance limit of single crystals is determined by the critical resolved shear stress of the active slip or twinning system. | |||||||
| 書誌情報 |
Science reports of the Research Institutes, Tohoku University. Ser. A, Physics, chemistry and metallurgy 巻 16, p. 63-63, 発行日 1964 |
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| 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 | 1964 | |||||||
| 日付タイプ | Created | |||||||
| フォーマット | ||||||||
| 内容記述タイプ | Other | |||||||
| 内容記述 | 54990 bytes | |||||||
| 更新日 | ||||||||
| 日付 | 2010-01-27 | |||||||
| 日付タイプ | Created | |||||||
