|
Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Engineering / Faculty of Engineering >
Peer-reviewed Journal Articles, etc >
複合鋳込み法による過共晶Al-Si合金の初晶Siの微細化
| Title: | 複合鋳込み法による過共晶Al-Si合金の初晶Siの微細化 |
| Other Titles: | Refinement of Primary Silicon Crystals in Hypereutectic Al-Si Alloys by the Duplex Casting Process |
| Authors: | 大参, 達也1 Browse this author →KAKEN DB | | 工藤, 昌行2 Browse this author |
| Authors(alt): | Ohmi, Tatsuya1 | | Kudoh, Masayuki2 |
| Keywords: | casting process | | hypereutectic aluminum-silicon alloy | | primary silicon | | refinement | | solidification |
| Issue Date: | Jun-1990 |
| Publisher: | 日本金属学会 |
| Journal Title: | 日本金属学会誌 |
| Journal Title(alt): | Journal of the Japan Institute of Metals |
| Volume: | 54 |
| Issue: | 6 |
| Start Page: | 700 |
| End Page: | 705 |
| Publisher DOI: | 10.2320/jinstmet1952.54.6_700 |
| Abstract: | The Duplex Casting process, in which two kinds of molten alloys with different compositions are cast in mold in sequence at a given interval, was applied to hypereutectic Al-Si alloys as the refinement process for the primary silicon crystals which grow to a considarable size under the conventional castings.
It this study, three combinations of alloy compositions were used to make Al-22 mass%Si ingots: (1) Al-12 mass%Si as the first molten alloy and Al-32 mass%Si as the second molten alloy; (2) Al-32 mass%Si and Al-12 mass%Si; and (3) Al-22 mass%Si and Al-22 mass%Si.
When the liquidus temperature of the second molten alloy was higher than the first one, the primary silicon crystals were drastically refined. Furthermore, they were finer when the temperature of each molten alloy at the time of mixing was lower. Under the most effective condition for refinement, the mean size of primary silicon crystals was reduced to about 40 μm, while it was 70-90 μm in the ingots produced by the conventional casting.
It was also observed that the macroscopic segregation of the primary silicon was alleviated as the primary silicon crystals were refined by the Duplex Casting process. |
| Relation: | https://www.jstage.jst.go.jp/article/jinstmet1952/54/6/54_6_700/_article/-char/ja |
| Type: | article |
| URI: | http://hdl.handle.net/2115/74678 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
|
Submitter: 大参 達也
|
