Method of improving bulk-solidifying amorphous alloy compositions and cast articles made of the same
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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Abstract
Improved bulk-solidifying amorphous alloy compositions and methods of making and casting such compositions are provided. The improved bulk-solidifying amorphous alloys are preferably subjected to a superheating treatment and subsequently are cast into articles with high elastic limit. The invention allows use of lower purity raw-materials, and as such effectively reduces the overall cost of the final articles. Furthermore, the invention provides for the casting of new alloys into shapes at lower cooling rates then is possible with the conventional bulk-solidifying amorphous alloys.
43 Citations
67 Claims
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1. A bulk-solidifying amorphous alloy comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A method of forming a bulk-solidifying amorphous alloy comprising the steps of:
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providing a base bulk-solidifying amorphous alloy including a plurality of metal components each having a separate heat of formation for oxygen; providing 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; and adding the additional alloying metal to the base alloy to form a new the bulk-solidifying amorphous alloy; 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. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51)
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52. A method of forming a feedstock of bulk-solidifying amorphous alloy comprising the steps of:
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providing a base alloy including a plurality of metal components each having a separate heat of formation for oxygen; and providing 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; adding the additional alloying metal to the base alloy to form the bulk-solidifying amorphous alloy; and superheating the bulk-solidifying amorphous alloy comprising heating the bulk-solidifying amorphous alloy to a superheating temperature; 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. - View Dependent Claims (53)
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54. A method of casting amorphous articles comprising the steps of:
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providing a base alloy including a plurality of metal components each having a separate heat of formation for oxygen; and providing 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; adding the additional alloying metal to the base alloy to form the bulk-solidifying amorphous alloy; superheating the bulk-solidifying amorphous alloy comprising heating the bulk-solidifying amorphous alloy to a superheating temperature; and casting the bulk-solidifying amorphous alloy into a finished article at a cooling rate such that the finished article remains substantially amorphous; 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 alloy in 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.- View Dependent Claims (55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67)
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Specification