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US RE44,426 E1Granted
Continuous casting of foamed bulk amorphous alloys
AssigneeCrucible Intellectual Property, LLC
InventorJames Kang
Life of this patent
Estimating the term…
Abstract
Methods and apparatuses for the continuous casting of solid foam structures with varying bubble density from bulk solidifying amorphous alloys are provided. Continuously cast solid foam structures having bubble densities in the range of from 50 percent up to 95% by volume are also provided.
Claims25
A method of manufacturing a continuous sheet of a metallic glass foam from a bulk-solidifying amorphous alloy comprising:
- providing a quantity of a bulk solidifying amorphous alloy foam precursor at a casting temperature around the melting temperature of the 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 viscosity of the bulk solidifying amorphous alloy is from about 0.1 to 10,000 poise;
- introducing the stabilized bulk solidifying amorphous alloy foam precursor 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 foam precursor 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 foam sheet having a thickness of at least 0.1 mm.
2 more elements
A method of manufacturing a continuous sheet of a metallic glass foam from a bulk-solidifying amorphous alloy comprising:
- providing a quantity of a bulk solidifying amorphous alloy foam precursor at a casting temperature around the melting temperature of the 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);
- forming the stabilized bulk solidifying amorphous alloy foam precursor into a continuous sheet of heated bulk solidifying amorphous alloy;
- and quenching the heated bulk solidifying amorphous alloy foam precursor 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 foam sheet having a thickness of at least 0.1 mm.
1 more element
Dependencies are inferred from the claim text.