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Title: Quinary metallic glass alloys

Abstract

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.

Inventors:
 [1];  [1]
  1. Pasadena, CA
Issue Date:
Research Org.:
California Institute of Technology (CalTech), Pasadena, CA (United States)
OSTI Identifier:
871457
Patent Number(s):
5735975
Assignee:
California Institute of Technology (Pasadena, CA)
Patent Classifications (CPCs):
C - CHEMISTRY C22 - METALLURGY C22C - ALLOYS
DOE Contract Number:  
FG03-86ER45242
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
quinary; metallic; glass; alloys; form; cooling; below; transition; temperature; rate; 10; comprise; zirconium; hafnium; range; 45; 65; atomic; percent; titanium; niobium; aluminum; zinc; 15; balance; alloy; compositions; copper; iron; cobalt; nickel; composition; constrained; percentage; ratio; formula; zr; hf; zn; nb; cu; z; constraints; ranges; comprises; multidot; compositions comprise; metallic glass; alloy composition; atomic percent; transition temperature; form metal; glass transition; alloys comprise; atomic percentage; alloy compositions; alloys form; form metallic; cooling below; glass alloys; /148/420/

Citation Formats

Lin, Xianghong, and Johnson, William L. Quinary metallic glass alloys. United States: N. p., 1998. Web.
Lin, Xianghong, & Johnson, William L. Quinary metallic glass alloys. United States.
Lin, Xianghong, and Johnson, William L. Tue . "Quinary metallic glass alloys". United States. https://www.osti.gov/servlets/purl/871457.
@article{osti_871457,
title = {Quinary metallic glass alloys},
author = {Lin, Xianghong and Johnson, William L},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1998},
month = {4}
}

Patent:

Works referenced in this record:

Fabrication of Bulky Zr-Based Glassy Alloys by Suction Casting into Copper Mold
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


Preparation of 16 mm Diameter Rod of Amorphous Zr<SUB>65</SUB>Al<SUB>7.5</SUB>Ni<SUB>10</SUB>Cu<SUB>17.5</SUB> Alloy
journal, January 1993


High Strength Bulk Amorphous Alloys with Low Critical Cooling Rates (<I>Overview</I>)
journal, January 1995


Effect of Additional Elements on Glass Transition Behavior and Glass Formation Tendency of Zr–Al–Cu–Ni Alloys
journal, January 1995