Influence of Gravity on the Microstructure of Directionally Solidified Ag–Si Eutectic Alloy
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- Aoi Ichiro
- Department of Materials Science and Engineering, Waseda University
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- Yoshida Makoto
- Department of Mechanical Engineering, Faculty of Engineering, Hiroshima University
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- Fukunaga Hideharu
- Department of Mechanical Engineering, Faculty of Engineering, Hiroshima University
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- Nakae Hideo
- Department of Materials Science and Engineering, Waseda University
書誌事項
- タイトル別名
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- Influence of Gravity on the Microstructure of Directionally Solidified Ag–Si Eutectic Alloy
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抄録
In order to study the influence of gravity on the eutectic growth of Ag–Si and Al–Si alloys, both the downward (direction of gravity) and upward (opposite to direction of gravity) unidirectional solidifications were carried out. In the case of the downward U.D.S., the molten metal is confined between the crucible and solid. This inevitably produces the shrinkage cavity at the solid/liquid interface during solidification. In this study, the zone-melting technique was used to avoid this cavity formation. The results of this study were as follows:<BR>(1) In the case of the downward U.D.S. of the Ag–Si alloy, the eutectic silicon phase grew discontinuously and dispersed in the α-Ag phase with a diameter of several micrometers. This is caused by the large difference in specific density between silver and the silicon phase. On the other hand, in the case of the upward U.D.S., the silicon phase grew continuously and its morphology showed the typical faceted/non-faceted eutectic.<BR>(2) The eutectic silicon phase of the Al–Si alloy grew continuously regardless of growth direction. There was no morphological difference between the upward and downward U.D.S. specimens.
収録刊行物
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- Materials Transactions, JIM
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Materials Transactions, JIM 40 (1), 27-33, 1999
社団法人 日本金属学会
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詳細情報 詳細情報について
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- CRID
- 1390282679225321728
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- NII論文ID
- 130003557096
- 10003805240
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- NII書誌ID
- AA10699969
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- COI
- 1:CAS:528:DyaK1MXhvVWjtr4%3D
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- ISSN
- 2432471X
- 09161821
- http://id.crossref.org/issn/13459678
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- NDL書誌ID
- 4636038
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可