Foamed structures of bulk-solidifying amorphous alloys
OwnerJames Kang, William L. Johnson +2inventors
InventorsJames Kang, William L. Johnson, Atakan Peker, Jan Schroers
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Abstract
A foamed structure of bulk solidifying amorphous alloy with improved impact resistance, with high stiffness to weight ratio, and/or with high resistance to fatigue and crack propagation, and a method for forming such foamed structures are provided.
Claims41
A solidified foam bulk amorphous alloy structure comprising a foam structure of a bulk solidifying amorphous alloy having a critical cooling rate at about 500 K/sec or less wherein a continuous piece of the bulk solidifying amorphous alloy is connected through a pore structure comprising a plurality of pores and wherein the size of each pore is from 1 micron to up to 5.0 mm in size and the volume fraction of the plurality of pores is from 10% to up to 95% or more such that the solidified foam bulk amorphous alloy structure is superior to the monolithic solid form of the base bulk solidifying amorphous alloy in at least one of the characteristics selected from the group consisting of specific modulus, specific strength, elastic strain limit, energy absorption, fracture toughness, and crack propagation resistance.
A solidified foam bulk amorphous alloy structure comprising a foam structure of a bulk solidifying amorphous alloy having a critical casting thickness of about 0.5 mm or more wherein a continuous piece of the bulk solidifying amorphous alloy is connected through a pore structure comprising a plurality of pores and wherein the size of each pore is from 1 micron to up to 5.0 mm in size and the volume fraction of the plurality of pores is from 10% to up to 95% or more such that the solidified foam bulk amorphous alloy structure is superior to the monolithic solid form of the base bulk solidifying amorphous alloy in at least one of the characteristics selected from the group consisting of specific modulus, specific strength, elastic strain limit, energy absorption, fracture toughness, and crack propagation resistance.
Dependencies are inferred from the claim text.