| Project/Area Number |
20360344
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Metal making engineering
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| Research Institution | Toyota Technological Institute |
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Principal Investigator |
TSUNEKAWA Yoshiki Toyota Technological Institute, 工学部, 教授 (50148350)
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| Co-Investigator(Kenkyū-buntansha) |
OKUMIYA Masahiro 豊田工業大学, 工学部, 准教授 (20177182)
WALEED Khalifa 豊田工業大学, 工学部, PD研究員 (30460611)
SEBASTIAN Gunapowski 豊田工業大学, 工学部, PD研究員 (20583280)
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| Project Period (FY) |
2008 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥18,720,000 (Direct Cost: ¥14,400,000、Indirect Cost: ¥4,320,000)
Fiscal Year 2010: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2009: ¥5,720,000 (Direct Cost: ¥4,400,000、Indirect Cost: ¥1,320,000)
Fiscal Year 2008: ¥9,620,000 (Direct Cost: ¥7,400,000、Indirect Cost: ¥2,220,000)
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| Keywords | ソノ凝固 / 音響キャビテーション / 半溶融鋳造 / 超音波 / キャビテーション / 凝固核 / 鋳造プロセス / 超音波振動 / 非平衡α-Al相 / 過共晶Al-Si合金 / 亜共晶Al-Si合金 |
|---|
| Research Abstract |
The present study is focused on sono-solidification with acoustic cavitation in hypereutectic Al-Si alloy. During the sono-solidification of hypereutectic Al-Si alloy, non-equilibrium ・-Al grains crystallize before reaching the eutectic temperature, in addition to the refined primary silicon grains. Non-equilibrium ・・-Al nuclei are crystallized at collapsed cavitation bubble sites and they are dispersed throughout the billet due to acoustic streaming. Acoustic cavitation also leads to the generation of inhomogeneous nuclei, that is, cavitation bubbles, so that a large number of inhomogeneous nuclei of cavitation bubbles causes the grain refinement of primary silicon even above the liquidus temperature.
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