Grain refinement of cast Mg-Al alloys.
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- TAMURA Yousuke
- Graduate school, Chiba Institute of Technology
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- KONO Norio
- Chiba Institute of Technology
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- MOTEGI Tetsuichi
- Chiba Institute of Technology
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- SATO Eiichiro
- Chiba Institute of Technology
Bibliographic Information
- Other Title
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- Mg‐Al系合金の鋳造組織における結晶粒微細化
- Mg-Al系合金の鋳造組織における結晶粒微細化
- Mg Alケイ ゴウキン ノ チュウゾウ ソシキ ニ オケル ケッショウリュウ ビサイカ
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Abstract
To understand the grain refinement mechanisms by C addition and superheating of Mg–Al system alloys, two kinds of experiments were performed. In the first experiment, a commercial AZ91E magnesium alloy was melted and C2Cl6 was added as a carbon nucleant at 1023 K. In the second experiment, normal-purity and high-purity Mg–Al alloys containing 5.6 to 14.1%Al made of 99.9 and 99.99%Mg and 99.99 and 99.999%Al were superheated at 1123 K for 900 s before casting. Metallographic examinations were performed to clarify the solidified structures. In the addition of carbon, rod-like subsance as nucleants could be observed in each grain. EPMA analysis indicated that rod-like subatance was constituted of Al, C and O. The grain refinement of high-purity Mg–Al alloys occur without the superheating. Therefore it is difficult to evaluate the effect of impurities on superheating. In high-purity Mg–Al alloys, however, it seems that minute amount of C is responsible for grain refinement.
Journal
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- Journal of Japan Institute of Light Metals
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Journal of Japan Institute of Light Metals 48 (8), 395-399, 1998
The Japan Institute of Light Metals
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Details 詳細情報について
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- CRID
- 1390001206336228608
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- NII Article ID
- 10002665089
- 10007259086
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- NII Book ID
- AN00069773
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- COI
- 1:CAS:528:DyaK1cXlslKkt78%3D
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- ISSN
- 18808018
- 04515994
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- NDL BIB ID
- 4652061
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed