Zirconium based bulk metallic glasses with hafnium
AssigneeWashington State University
InventorsAtakan Peker, Dongchun Qiao
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Abstract
Various embodiments of zirconium based bulk metallic glass with hafnium are described herein. In one embodiment, an alloy composition includes zirconium (Zr), hafnium (Hf), copper (Cu), aluminum (Al), at least one element from a group consisting of niobium (Nb) and titanium (Ti), and at least one element from a group consisting of nickel (Ni), iron (Fe), and cobalt (Co).
Claims18
An article formed from a metallic glass composition having zirconium (Zr), hafnium (Hf), copper (Cu), aluminum (Al), at least one element from a group consisting of niobium (Nb) and titanium (Ti), and at least one element from a group consisting of nickel (Ni), iron (Fe), and cobalt (Co), the metallic glass composition having a formula of ZraHfb(Nb,Ti)cCud(Ni,Fe,Co)eAlf, wherein,
- a is from about 35 to about 60;
- b is from about 8 to about 20;
- c is from about 0 to about 8;
- d is from about 0 to about 40;
- e is from about 0 to about 30;
- and
- f is from about 5 to about 25, and wherein the article formed from the metallic glass composition has a minimum section thickness of about 5 mm to about 30 mm and contains an amorphous phase of the metallic glass composition, and wherein a ratio of Hf/(Ti+Nb) is from about 2 to about 5.
A metallic glass composition, comprising zirconium (Zr), hafnium (Hf), copper (Cu), aluminum (Al), at least one element from a group consisting of niobium (Nb) and titanium (Ti), and at least one element from a group consisting of nickel (Ni), iron (Fe), and cobalt (Co), wherein the metallic glass composition has a formula of ZraHfb(Nb,Ti)cCud(Ni,Fe,Co)eAlf, and wherein:
- a is from about 35 to about 60;
- b is from about 8 to about 20;
- c is from about 0 to about 8;
- d is from about 0 to about 40;
- e is from about 0 to about 30;
- and
- f is from about 5 to about 25, and wherein an article formed from the metallic glass composition has a minimum section thickness of about 5 mm to about 30 mm and contains an amorphous phase of the metallic glass composition, and wherein a ratio of Hf/(Ti+Nb) is from about 2 to about 5.
A metallic glass composition comprising zirconium (Zr), hafnium (Hf), copper (Cu), aluminum (Al), at least one element from a group consisting of niobium (Nb) and titanium (Ti), and at least one element from a group consisting of nickel (Ni), iron (Fe), and cobalt (Co), wherein a concentration of the zirconium is from about 35 to about 60atomic percent, and wherein a concentration of the hafnium is from about 8 to about 20 atomic percent, and wherein the metallic glass composition is capable of being formed into an article having a minimum section thickness of about 5 mm to about 30 mm and contains an amorphous phase of the metallic glass composition, and wherein a ratio of Hf/(Ti+Nb) is from about 2 to about 5.
Dependencies are inferred from the claim text.