Formation Criterion of Macrosegregation in a Squeeze-cast Al-7mass%Si Alloy

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概要

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• The formation behavior of macrosegregation in an Al-7mass%Si squeeze-cast ingot was investigated based on a series of experiments. Main process parameters such as applied pressure, pouring and die temperatures were observed to influence the solidification rate and the average temperature gradient in the squeeze-cast ingot. A criterion for the formation of macrosegregation in an Al-7mass%Si squeeze casting, <I>P</I>1.5<I>G</I>0.5<I>R</I>-5.8>9.7 was proposed through the empirical method. It is suggested that sound squeeze castings, free from both shrinkage defects and macrosegregation, can be obtained by means of inoculation or adequate insulation with a medium applied pressure range for practical applications.

• The Iron and Steel Institute of Japanの論文
• 1999-11-15

著者

• HONG C.

  Department of Electrical Engineering, National Cheng Kung University

• Lee S.

  Center For Computer-aided Materials Processing (camp) Department Of Metallurgical Engineering Yonsei

• Lee S.

  Center For Noncrystalline Materials Department Of Metallurgical Engineering Yonsei University

• SHEN H.

  Department of Metallurgical Engineering, Yonsei University

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