ID | 115406 |
Title Alternative | Three-Dimensional Morphology of C15–Al2Ca Precipitates in a Mg–Al–Ca Alloy
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Author |
Kashiwase, Sakiko
Tokyo Institute of Technology|Toyota Industries Co.
Unekawa, Mariko
Tokyo Institute of Technology
Hisazawa, Hiromu
Tokushima University
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Terada, Yoshihiro
Tokyo Institute of Technology
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Keywords | magnesium alloy
die-cast
Laves phase
high-resolution transmission electron microscopy (HRTEM)
morphology
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Content Type |
Journal Article
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Description | 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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Journal Title |
Journal of the Japan Institute of Metals and Materials
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ISSN | 00214876
18806880
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NCID | AN00062446
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Publisher | 日本金属学会
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Volume | 83
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Issue | 6
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Start Page | 193
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End Page | 197
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Published Date | 2019-05-25
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EDB ID | |
DOI (Published Version) | |
URL ( Publisher's Version ) | |
FullText File | |
language |
jpn
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TextVersion |
Publisher
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departments |
Science and Technology
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