DIRECTIONAL SOLIDIFICATION CASTING METHOD WHICH PREVENTS FEATHER CRYSTAL

PURPOSE:To prevent the generation of feather crystals and to improve mechanical properties by incorporating a specific ratio of Sr into the melt of an Al alloy. CONSTITUTION:After the melt of the Al alloy is poured into a casting mold, the molten metal is successively cooled from one end toward the...

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Hauptverfasser: KITAHARA YASUHISA, TAKEBAYASHI YOSHIKI, NISHIKAWA KATSUSHI, OZAKI KOICHI
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creator KITAHARA YASUHISA
TAKEBAYASHI YOSHIKI
NISHIKAWA KATSUSHI
OZAKI KOICHI
description PURPOSE:To prevent the generation of feather crystals and to improve mechanical properties by incorporating a specific ratio of Sr into the melt of an Al alloy. CONSTITUTION:After the melt of the Al alloy is poured into a casting mold, the molten metal is successively cooled from one end toward the riser part of the casting mold and a casting is produced by the directional solidification toward the riser part. The Sr is incorporated at 10 to 80ppm into the melt of the Al alloy in this case. The use of Al-Sr alloys, such as Al-90% Sr, Al-8% Sr, Al-3.5% Sr-1% Ti-0.2% B or base alloys such as Al-Sr-Ti-B alloys combined with a Ti-B alloy allows easy addition and is good in the yield of the addition and is, therefore, preferable as the method for adding the Sr to the molten metal.
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subjects ALLOYS
CASTING
CASTING OF METALS
CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
METALLURGY
PERFORMING OPERATIONS
POWDER METALLURGY
TRANSPORTING
TREATMENT OF ALLOYS OR NON-FERROUS METALS
title DIRECTIONAL SOLIDIFICATION CASTING METHOD WHICH PREVENTS FEATHER CRYSTAL
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