Bulk nickel-based chromium and phosphorous bearing metallic glasses
First Claim
Patent Images
1. An alloy represented by the following formula:
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Ni(69−
w−
x−
y−
z)Cr8.5+wNb3+xP16.5+yB3+z,where w, x, y, and z are positive or negative atomic percentages that satisfy the condition;
0.0494w2+1.78x2+4y2+z2<
1, andwherein the critical rod diameter of the alloy is at least 5 mm.
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Abstract
Ni-based Cr- and P-bearing alloys that can from centimeter-thick amorphous articles are provided. Within the family of alloys, millimeter-thick bulk-glassy articles can undergo macroscopic plastic bending under load without fracturing catastrophically.
44 Citations
18 Claims
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1. An alloy represented by the following formula:
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Ni(69−
w−
x−
y−
z)Cr8.5+wNb3+xP16.5+yB3+z,where w, x, y, and z are positive or negative atomic percentages that satisfy the condition;
0.0494w2+1.78x2+4y2+z2<
1, andwherein the critical rod diameter of the alloy is at least 5 mm. - View Dependent Claims (2, 3, 4)
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5. A metallic glass comprising an alloy where a composition of the alloy is represented by the following formula:
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Ni(69−
w−
x−
y−
z)Cr8.5+wNb3+xP16.5+yB3+z,where w, x, y, and z are positive or negative atomic percentages that satisfy the condition;
0.0494w2+1.78x2+4y2+z2<
1, andwherein the critical rod diameter of the alloy is at least 5 mm. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of producing a metallic glass comprising:
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melting an alloy into a molten state;
where the alloy has a composition represented by the following formula;
Ni(69−
w−
x−
y−
z)Cr8.5+wNb3+xP16.5+yB3+z,where w, x, y, and z are positive or negative atomic percentages that satisfy the condition;
0.0494w2+1.78x2+4y2+z2<
1; andquenching the melt at a cooling rate sufficiently rapid to prevent crystallization of the alloy. - View Dependent Claims (15, 16, 17, 18)
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Specification