Aluminum grain refiner containing duplex crystals
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United States of America Patent
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Sep 16, 1986
Grant Date -
N/A
app pub date -
Aug 2, 1984
filing date -
Aug 2, 1984
priority date (Note) -
Expired
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Abstract
Disclosed is a new aluminum grain refiner alloy with a controlled, effective content of 'duplex' crystals. The duplex crystals are made by (1) producing aluminides that contain boron in solution, and by (2) aging said aluminide in a manner to precipitate at least part of the boron to form the duplex crystals. The duplex crystals have been discovered to be extremely potent grain refining agents.
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