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Method of improving bulk-solidifying amorphous alloy compositions and cast articles made of the same

  • US 7,008,490 B2
  • Filed: 10/02/2002
  • Issued: 03/07/2006
  • Est. Priority Date: 10/03/2001
  • Status: Active Grant
First Claim
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1. A bulk-solidifying amorphous alloy comprising:

  • a base bulk solidifying amorphous alloy including a plurality of metal components each having a separate heat of formation for oxygen; and

    an additional alloying metal having an alloying metal heat of formation for oxygen, where the alloying metal heat of formation for oxygen is greater than the largest heat of formation for oxygen among the metal components;

    wherein the bulk-solidifying amorphous alloy is defined by the molecular equation;


    (M1aM2b . . . Mnc)100−

    x Qxand is subject to the following equation when cast;


    x=k*C(O),where M1, M2, and M3 are the metal components in the base alloy;

    n is the number of metal components in the base alloy;

    a, b, and c define the atomic percentage of the metal components in the base alloy;

    Q is the additional alloying metal;

    x defines the atomic percentage of the additional alloying metal in the bulk-solidifying amorphous alloy;

    k is a constant having a range from about 0.5 to 10; and

    C(O) defines the atomic percentage of oxygen in an as-cast article of the bulk-solidifying amorphous alloy.

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