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ID 115406
タイトル別表記
Three-Dimensional Morphology of C15–Al2Ca Precipitates in a Mg–Al–Ca Alloy
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
キーワード
magnesium alloy
die-cast
Laves phase
high-resolution transmission electron microscopy (HRTEM)
morphology
資料タイプ
学術雑誌論文
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.
掲載誌名
日本金属学会誌
ISSN
00214876
18806880
cat書誌ID
AN00062446
出版者
日本金属学会
83
6
開始ページ
193
終了ページ
197
発行日
2019-05-25
EDB ID
出版社版DOI
出版社版URL
フルテキストファイル
言語
jpn
著者版フラグ
出版社版
部局
理工学系