Quinary metallic glass alloys

Patent · Tue Apr 07 04:00:00 EDT 1998

OSTI ID:612123

Lin, X; Johnson, W L

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{hor_ellipsis}y is less than 10 atomic percent, and x/z ranges from 0.5 to 2.

• Research Organization: California Institute of Technology
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: FG03-86ER45242
• Assignee: California Inst. of Tech., Pasadena, CA (United States)
• Patent Number(s): US 5,735,975/A/
• Application Number: PAN: 8-604,452
• OSTI ID: 612123
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM ALLOYS
CHEMICAL COMPOSITION
HAFNIUM ALLOYS
METALLIC GLASSES
NIOBIUM ALLOYS
SYNTHESIS
TITANIUM ALLOYS
ZINC ALLOYS
ZIRCONIUM ALLOYS