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亜共晶Al-Si合金の半凝固スラリーとリンを添加した過共晶Al-Si合金溶湯との混合による微細初晶シリコンの生成
| Title: | 亜共晶Al-Si合金の半凝固スラリーとリンを添加した過共晶Al-Si合金溶湯との混合による微細初晶シリコンの生成 |
| Other Titles: | Formation of Fine Primary Silicon Crystals by Mixing of Semi-solid Slurry of Hypoeutectic Al-Si Alloy and Phosphorus-Added Hypereutectic Al-Si Alloy Melt |
| Authors: | 大参, 達也1 Browse this author →KAKEN DB | | 簑口, 光樹2 Browse this author | | 工藤, 昌行3 Browse this author | | 伊藤, 洋一4 Browse this author | | 松浦, 清隆5 Browse this author →KAKEN DB | | 石井, 邦宜6 Browse this author |
| Authors(alt): | Ohmi, Tatsuya1 | | Minoguchi, Kouki2 | | Kudoh, Masayuki3 | | Itoh, Youichi4 | | Matsuura, Kiyotaka5 | | Ishii, Kuniyoshi6 |
| Keywords: | semi-solid metal | | slurry | | hypereutectic aluminum-silicon alloy | | hypoeutectic aluminum-silicon alloy | | mixing | | primary silicon | | refinement | | eutectic silicon | | modification | | solidification structure |
| Issue Date: | Mar-1994 |
| 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: | 58 |
| Issue: | 3 |
| Start Page: | 324 |
| End Page: | 329 |
| Publisher DOI: | 10.2320/jinstmet1952.58.3_324 |
| Abstract: | The principle of a new process to produce the semi-solid slurry of hypereutectic Al-Si alloy containing fine primary silicon crystals has been proposed: the process was named “slurry-melt mixing (SMM)” process. In this process, a phosphorus-added hypereutectic Al-Si alloy melt (second-alloy melt) was mixed with a semi-solid slurry of a hypoeutectic Al-Si alloy (first-alloy slurry) under a furnace-cooling atmosphere. As the two kinds of alloys were brought into contact with each other with agitation, the second-alloy melt was rapidly quenched to precipitate numerous fine primary silicon crystals, while the equiaxed alpha solid solution in the first-alloy slurry was remelted absorbing the latent heat of fusion. And the enthalpy balance of the two alloys led the mixed alloy to a stable solid-liquid coexisting state.
Al-20 mass%Si alloy slurry was produced by the SMM process with the combination of an Al-8 mass%Si alloy and a phosphorus-added Al-32 mass%Si alloy. The arithmetic mean of area-equivalent diameters of the primary silicon crystals in the SMM slurry was 27 μm. The fluidity of the SMM slurry could be kept for about 1000 s because of the low cooling rate of the atmosphere. Sodium-addition into the SMM slurry makes it possible to achieve the modification of the eutectic silicon crystals without the coarsening of the primary silicon crystals. |
| Relation: | https://www.jstage.jst.go.jp/article/jinstmet1952/58/3/58_3_324/_article/-char/ja |
| Type: | article |
| URI: | http://hdl.handle.net/2115/74677 |
| 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)
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Submitter: 大参 達也
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