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  1. B200 工学部/工学研究科
  2. B200b 紀要
  3. Memoirs of the Faculty of Engineering, Nagoya University
  4. 39(2)

Dynamical studies of microstructural changes of crystals by real time x-ray topography

https://doi.org/10.18999/memfenu.39.2.195
https://doi.org/10.18999/memfenu.39.2.195
03111a9d-4116-4b98-91d1-483d7b674643
名前 / ファイル ライセンス アクション
39-2-01.pdf 39-2-01.pdf (25.4 MB)
Item type 紀要論文 / Departmental Bulletin Paper(1)
公開日 2020-10-29
タイトル
タイトル Dynamical studies of microstructural changes of crystals by real time x-ray topography
言語 en
著者 Imura, Toru

× Imura, Toru

WEKO 102011

en Imura, Toru

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Saka, Hiroyasu

× Saka, Hiroyasu

WEKO 102012

en Saka, Hiroyasu

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Kobayashi, Tatsumasa

× Kobayashi, Tatsumasa

WEKO 102013

en Kobayashi, Tatsumasa

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Kawabe, Nozomu

× Kawabe, Nozomu

WEKO 102014

en Kawabe, Nozomu

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Sakai, Akira

× Sakai, Akira

WEKO 102015

en Sakai, Akira

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Suga, Hisaaki

× Suga, Hisaaki

WEKO 102016

en Suga, Hisaaki

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アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
内容記述
内容記述 Crystal growth of pure aluminum, pure gallium and aluminummagnesium alloys has been studied by real time x-ray topography using an ultra high intensity x-ray generator and a Lang-type camera with a heating facility. Faceted growth has been observed in gallium, but not in aluminum. In both cases, however, a dislocation free region has been observed near the solid-liquid interface. Many dislocations were generated behind this region as the interface advanced and also as the growth rate was suddenly changed. Based on the present observations, it is concluded that the Jackson's theory has to be modified at least by taking into account the contribution of the second nearest neighbor atoms in calculating a-parameter. In the case of aluminum-magnesium alloys, it is found that the angle between the primary arm and the secondary arm of a dendrite changes depending on growth rate and solute content. Origin of dislocations induced during crystallization and cooling process are critically discussed and the most probable origin is considered to be vacancy condensation. Effectiveness of thermal cyclic annealing in the reduction of dislocation density in various types of crystal is experimentally confirmed.
言語 en
内容記述タイプ Abstract
出版者
言語 en
出版者 Faculty of Engineering, Nagoya University
言語
言語 eng
資源タイプ
資源 http://purl.org/coar/resource_type/c_6501
タイプ departmental bulletin paper
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
ID登録
ID登録 10.18999/memfenu.39.2.195
ID登録タイプ JaLC
ISSN(print)
収録物識別子タイプ PISSN
収録物識別子 0027-7657
書誌情報 en : Memoirs of the Faculty of Engineering, Nagoya University

巻 39, 号 2, p. 195-262, 発行日 1988-03-31
著者版フラグ
値 publisher
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