Microstructure evolution of A1-Si semi-solid slurry by gas bubble stirring method

Microstructure evolution of A1-Si semi-solid slurry by gas bubble stirring method

TQ174.756; A novel technique of introducing gas bubble stirring during solidification was studied to prepare Al-Si semi-solid slurry.The microstructure evolution of the slurry during slow cooling process after stirring was investigated.The effects of the solidification rate on the microstructure of...

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Veröffentlicht in:中南大学学报（英文版） 2011, Vol.18 (6), p.1789-1794
Hauptverfasser: ZHANG Lei, DONG Xuan-pu, LI Ji-qiang, LI Kan, ZHANG Zong-kui, WANG Wen-jun, FAN Zi-tian
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container_end_page 1794
container_issue 6
container_start_page 1789
container_title 中南大学学报（英文版）
container_volume 18
creator ZHANG Lei
DONG Xuan-pu
LI Ji-qiang
LI Kan
ZHANG Zong-kui
WANG Wen-jun
FAN Zi-tian
description TQ174.756; A novel technique of introducing gas bubble stirring during solidification was studied to prepare Al-Si semi-solid slurry.The microstructure evolution of the slurry during slow cooling process after stirring was investigated.The effects of the solidification rate on the microstructure of the semi-solid slurry were investigated under three different solidification conditions.The results show that fine non-dendritic slurry can be obtained using the gas bubble stirring method.Ripening and coarsening of primary Al grains are observed during the slow cooling process,and at last coarsened eutectic Si appears.Primary Al grains with different sizes and eutectic Si are obtained,corresponding to three different solidification rates.
doi_str_mv 10.1007/s11771-011-0903-3
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title Microstructure evolution of A1-Si semi-solid slurry by gas bubble stirring method
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