ID | 115406 |
タイトル別表記 | Three-Dimensional Morphology of C15–Al2Ca Precipitates in a Mg–Al–Ca Alloy
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著者 |
柏瀬, 早季子
東京工業大学|豊田自動織機
畝川, 真梨子
東京工業大学
寺田, 芳弘
東京工業大学
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キーワード | magnesium alloy
die-cast
Laves phase
high-resolution transmission electron microscopy (HRTEM)
morphology
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資料タイプ |
学術雑誌論文
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抄録 | The three-dimensional morphology and thickness of the C15–Al2Ca Laves phase, which precipitated within the primary α-Mg grains, were investigated for the Mg–5Al–1.5Ca alloy over-aged at 523 K for 100 h using the high-resolution transmission electron microscopy (HRTEM). The C15–Al2Ca phase precipitated with a hexagonal plate-like morphology along the (0001)α basal plane of the α-Mg matrix phase, where the sides of the hexagonal plates were parallel to the second columnar plane {1120}α of the α matrix. The typical coffee bean contrast was clearly visible around the precipitates, indicative of coherent precipitation of the C15–Al2Ca phase. The thickness of the C15–Al2Ca precipitates, which corresponds to the six layers of (111)C15 plane composed of Ca atoms, was evaluated to be approximately 1.5 nm.
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掲載誌名 |
日本金属学会誌
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ISSN | 00214876
18806880
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cat書誌ID | AN00062446
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出版者 | 日本金属学会
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巻 | 83
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号 | 6
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開始ページ | 193
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終了ページ | 197
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発行日 | 2019-05-25
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言語 |
jpn
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著者版フラグ |
出版社版
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部局 |
理工学系
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