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X-ray-induced defects as obstacles to dislocation motion in alkali halide crystals
http://hdl.handle.net/2297/46783
http://hdl.handle.net/2297/4678370c94818-6bcc-4c70-ba4f-24d00e2bb26e
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
TE-PR-OHGAKU-T-3959.pdf (427.5 kB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||
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| 公開日 | 2017-12-05 | |||||
| タイトル | ||||||
| タイトル | X-ray-induced defects as obstacles to dislocation motion in alkali halide crystals | |||||
| 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 | journal article | |||||
| 著者 |
Kohzuki, Yohichi
× Kohzuki, Yohichi× Ohgaku, Tomiyasu |
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| 書誌情報 |
Journal of Materials Science 巻 52, 号 7, p. 3959-3966, 発行日 2017-04-01 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0022-2461 | |||||
| NCID | ||||||
| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AA00701725 | |||||
| DOI | ||||||
| 関連タイプ | isVersionOf | |||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1007/s10853-016-0657-2 | |||||
| 出版者 | ||||||
| 出版者 | Springer | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | NaBr and KBr single crystals were exposed to X-ray (W-target, 30 kV, 20 mA) at room temperature and strain rate cycling tests associated with ultrasonic oscillation were carried out for the crystals at 77–293 K. The stress decrement (Δτ) due to oscillation and the stress change due to strain rate cycling have been measured during plastic deformation. The relative curve of ∆τ and strain rate sensitivity (λ) of flow stress has a stair-like shape for the two kinds of crystals. That is to say, the curve has two bending points and is divided into three regions: two plateau regions and the region between the two bending points, where λ decreases gradually with increasing ∆τ. The first region is a plateau within the small ∆τ. This implies that X-ray-induced defects have weak interaction with dislocation and act as obstacles to dislocation motion. Furthermore, the dependence of stress decrement (τp) at the first bending point on the activation volume (V) obtained from the difference between λ in the first and second plateau regions reflects the interaction between dislocation and defects induced by the X-irradiation. The activation energy for the break-away of a dislocation from the defect could be obtained on the basis of τp–V curve fitting the Barnett model to the experimental results. Then, the values of activation energy are 0.76 and 0.81 eV for NaBr and for KBr, respectively. © 2017 Springer Science+Business Media New York | |||||
| 内容記述 | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | Embargo Period 12 months | |||||
| 権利 | ||||||
| 権利情報 | © 2017, Springer Science+Business Media New York. | The final publication is available at www.springerlink.com/article/10.1007/s10853-016-0657-2 | |||||
| 著者版フラグ | ||||||
| 出版タイプ | AM | |||||
| 出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
