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US RE44,425 E1Granted
Continuous casting of bulk solidifying amorphous alloys
AssigneeCrucible Intellectual Property, LLC
InventorWilliam L. Johnson
Life of this patent
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Abstract
A process and apparatus for continuous casting of amorphous alloy sheets having large sheet thickness using bulk solidifying amorphous alloys are provided. Thick continuous amorphous alloy sheets made of bulk solidifying amorphous alloys are also provided.
Claims35
A method for the continuous casting of sheets of an amorphous material comprising:
- providing a quantity of a bulk a solidifying amorphous alloy at a temperature above the melting temperature of the bulk solidifying amorphous alloy;
- stabilizing the bulk solidifying amorphous alloy at a casting temperature below the melting temperature (Tm) of the alloy and above the temperature at which crystallization occurs on the shortest time scale for the alloy (TNOSE) such that the bulk solidifying amorphous alloy is in a viscosity regime of about 0.1 to 10,000 poise;
- introducing the stabilized bulk solidifying amorphous alloy onto a moving casting body such that a continuous sheet of heated bulk solidifying amorphous alloy is formed thereon;
- and
- quenching the heated bulk solidifying amorphous alloy at a quenching rate sufficiently fast such that the bulk solidifying amorphous alloy remains in a substantially amorphous phase to form a solid amorphous continuous sheet having a thickness of at least 0.1 mm.
2 more elements
A method comprising:
- stabilizing a heated bulk solidifying amorphous alloy at a casting temperature below a melting temperature (Tm) of the alloy and above a temperature at which crystallization occurs on the shortest time scale for the alloy (TNOSE) such that the bulk solidifying amorphous alloy is in a viscosity regime of about 0.1 to 10,000 poise;
- and
- quenching the stabilized bulk solidifying amorphous alloy on a moving casting body sufficiently fast, such that the bulk solidifying amorphous alloy remains in a substantially amorphous phase, to form a solid continuous sheet of bulk solidifying amorphous alloy,
- wherein the solid continuous sheet has a thickness of at least 0.1 mm.
1 more element
Dependencies are inferred from the claim text.