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Quinary metallic glass alloys

Patent ·
OSTI ID:871457
 [1];  [1]
  1. Pasadena, CA
+ Show Author Affiliations

At least quinary alloys form metallic glass upon cooling below the glass transition temperature at a rate less than 10.sup.3 K/s. Such alloys comprise zirconium and/or hafnium in the range of 45 to 65 atomic percent, titanium and/or niobium in the range of 4 to 7.5 atomic percent, and aluminum and/or zinc in the range of 5 to 15 atomic percent. The balance of the alloy compositions comprise copper, iron, and cobalt and/or nickel. The composition is constrained such that the atomic percentage of iron is less than 10 percent. Further, the ratio of copper to nickel and/or cobalt is in the range of from 1:2 to 2:1. The alloy composition formula is: (Zr,Hf).sub.a (Al,Zn).sub.b (Ti,Nb).sub.c (Cu.sub.x Fe.sub.y (Ni,Co).sub.z).sub.d wherein the constraints upon the formula are: a ranges from 45 to 65 atomic percent, b ranges from 5 to 15 atomic percent, c ranges from 4 to 7.5 atomic percent, d comprises the balance, d.multidot.y is less than 10 atomic percent, and x/z ranges from 0.5 to 2.

Research Organization:
California Institute of Technology (Pasadena, CA)
DOE Contract Number:
FG03-86ER45242
Assignee:
California Institute of Technology (Pasadena, CA)
Patent Number(s):
US 5735975
OSTI ID:
871457
Country of Publication:
United States
Language:
English

References (6)

Solidification Analyses of Bulky Zr60Al10Ni10Cu15Pd5 Glass Produced by Casting into Wedge-Shape Copper Mold journal January 1995
Fabrication of Bulky Zr-Based Glassy Alloys by Suction Casting into Copper Mold journal January 1995
Effect of Additional Elements on Glass Transition Behavior and Glass Formation Tendency of Zr–Al–Cu–Ni Alloys journal January 1995
Preparation of Bulky Amorphous Zr–Al–Co–Ni–Cu Alloys by Copper Mold Casting and Their Thermal and Mechanical Properties journal January 1995
High Strength Bulk Amorphous Alloys with Low Critical Cooling Rates (Overview) journal January 1995
Preparation of 16 mm Diameter Rod of Amorphous Zr65Al7.5Ni10Cu17.5 Alloy journal January 1993

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