Bulk amorphous refractory glasses based on the ni(-cu-)-ti(-zr)-a1 alloy system
AssigneeCalifornia Institute of Technology
InventorsDonghua Xu, William Johnson
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Abstract
Bulk amorphous alloys based on quaternary Ni—Zr—Ti—Al alloy system, and the extension of this quaternary system to higher order alloys by the addition of one or more alloying elements, methods of casting such alloys, and articles made of such alloys are provided.
Claims35
A glass forming alloy having a composition given by:
- (Ni1-xTMx)a((Ti,Zr)1-yETMy)b(Al1-zAMz)c,
- where a is in the range of from 27 to 58, b in the range of 21 to 59, c is in the range of 5 to 17 in atomic percentages;
- ETM is an early transition metal selected from the group of Hf, Nb, Ta, V, Cr, Mo, and W;
- TM is a transition metal selected from the group of Mn, Fe, Co, and Cu;
- and AM is an additive material selected from the group of Si, Sn, Ge, B, and Sb;
- and
- wherein the following constraints are given for the x, y and z fraction:
- x is less than 0.3, y is less than 0.3, z is less than 0.3, and the sum of x, y and z is less than about 0.5, and under the further constraint that the content of Ti content is more than 8 atomic percent and Zr content is more than 13 atomic percent.
A glass forming alloy having a composition given by:
- ((Ni,Cu)1-xTMx)a((Ti,Zr)1-yETMy)b(Al1-zAMz)c,
- where a is in the range of from 27 to 58, b in the range of 21 to 59, c is in the range of 5 to 17 in atomic percentages;
- ETM is an early transition metal selected from the group of Hf, Nb, Ta, V, Cr, Mo, and W;
- TM is a transition metal selected from the group of Mn, Fe, and Co;
- and AM is an additive material selected from the group of Si, Sn, Ge, B, and Sb;
- and
- wherein the following constraints are given for the x, y and z fraction:
- x is less than 0.3, y is less than 0.3, z is less than 0.3, and the sum of x, y and z is less than about 0.5, and under the further constraint that the content of Ti content is more than 8 atomic percent, Zr content is more than 13 atomic percent and Cu content is less than 17 atomic percent.
A glass forming alloy having a composition given by:
- Ni100-a-b-cTiaZrbAlcCud, where 8<a<22, 13<b<37, 5<c<17, 0<d<17, and a+b+c+d is in the range of from 53 to 73.
A glass forming alloy having a composition given by:
- Ni100-a-b-cTiaZrbAlcCud, where 15<a<18, 27<b<30, 9<c<11, 3<d<7, and a+b+c+d is in the range of from 58 to 61.
A glass forming alloy having a composition given by:
- Ni100-a-b-cTiaZrbAlc, where 15<a<18, 27<b<30, 9<c<11, and a+b+c is in the range of from 53 to 61.
A glass forming alloy having a composition of Ni40Ti16Zr28Al10Cu6.
A glass forming alloy having a composition of Ni40Ti17Zr28Al10Cu5.
A glass forming alloy having a composition of Ni39.8Ti15.92Zr27.86Al9.95Cu5.97Si0.5.
Dependencies are inferred from the claim text.