Aluminum grain refiner containing duplex crystals

Details Aluminum grain refiner containing duplex crystals Aluminum grain refiner containing duplex crystals

1984-08-02

1986-09-16

Dean, R.

Metal treatment

Stock

Age or precipitation hardened or strengthened

148159, C22C 2100

Patent

active

046120734

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.

REFERENCES:
patent: 3785807 (1974-01-01), Backerud

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