Bulk nickel-iron-based, nickel-cobalt-based and nickel-copper based glasses bearing chromium, niobium, phosphorus and boron

Patent metadata

Field	Value
Publication number	US-9957596-B2
Application number	US-201414581950-A
Country	US
Kind code	B2
Filing date	Dec 23, 2014
Priority date	Dec 23, 2013
Publication date	May 1, 2018
Grant date	May 1, 2018

Abstract

Ni—Fe, Ni—Co, and Ni—Cu-based bulk metallic glass forming alloys are provided. The alloys have critical rod diameters of at least 1 mm and in some instances at least 11 mm. The alloys have composition according to Ni (100-a-b-c-d-e) X a Cr b Nb c P d B e , wherein X is at least one of Fe, Co, and Cu, the atomic percent X (Fe and/or Co and/or Cu) ranges from 0.5 to 30, the atomic percent of Cr ranges from 2 to 15, the atomic percent of Nb ranges from 1 to 5, the atomic percent of P ranges from 14 to 19, the atomic percent of B ranges from 1 to 5, and the balance is Ni.

First claim

What is claimed is:

1. An alloy capable of forming a metallic glass, the alloy represented by the following formula (subscripts denote atomic percent):
Ni (100-a-b-c-d-e) Fe a Cr b Nb c P d B e , wherein

a is greater than 2 and up to 15, b ranges from 2 to 15, c ranges from 1 to 5, d ranges from 14 to 19, and e ranges from 1 to 5;
wherein the alloy has a critical rod diameter of at least 1 mm, wherein ΔT x of the metallic glass formed from the alloy is at least 3° C. higher compared to ΔT x of the metallic glass formed from a substantially identical alloy free of Fe and containing a corresponding increased amount of Ni.

2. The alloy of claim 1 , wherein a is greater than 2 and up to 12.5, b ranges from 5 to 12, c ranges from 2 to 4, d ranges from 16.25 to 17, e ranges from 2.75 to 3.5, and wherein the alloy has a critical rod diameter of at least 2 mm.

3. The alloy of claim 1 , wherein a is greater than 2 and up to 12.5, b ranges from 3 to 13, c is determined by x−y·b, where x ranges from 3.8 to 4.2 and y ranges from 0.11 to 0.14, d ranges from 16.25 to 17, e ranges from 2.75 to 3.5, and wherein the alloy has a critical rod diameter of at least 3 mm.

4. The alloy of claim 1 , wherein a is greater than 2 and up to 12.5, b ranges from 3 to 13, c is determined by x−y·b, where x ranges from 3.8 to 4.2 and y ranges from 0.11 to 0.14, d ranges from 15.5 to 17.5, e ranges from 2 to 4, and wherein the metallic glass has ΔT x of at least 41° C.

5. The alloy of claim 1 , wherein a is greater than 2 and up to 10, b ranges from 4 to 7, c ranges from 2.5 to 3.5, d ranges from 16 to 17, e ranges from 2.5 to 3.5, and wherein the metallic glass has ΔT x of at least 50° C.

6. A metallic glass comprising an alloy according to claim 1 .

7. An alloy capable of forming a metallic glass, the alloy represented by the following formula (subscripts denote atomic percent):
Ni (100-a-b-c-d-e) Co a Cr b Nb c P d B e , wherein
a is greater than 2 and up to 25, b ranges from 2 to 15, c ranges from 1 to 5, d ranges from 14 to 19, e ranges from 1 to 5;
wherein the alloy has a critical rod diameter of at least 3 mm, wherein ΔT x of the metallic glass formed from the alloy is at least 3° C. higher compared to ΔT x of the metallic glass formed from a substantially identical alloy free of Co and containing a corresponding increased amount of Ni.

8. The alloy of claim 7 , wherein a is greater than 2 and up to 20, b ranges from 5 to 12, c ranges from 2 to 4, d ranges from 16.25 to 17, e ranges from 2.75 to 3.5, wherein the alloy has a critical rod diameter of at least 6 mm.

9. The alloy of claim 7 , wherein a is greater than 2 and up to 20, b ranges from 3 to 13, c is determined by x−y·b, where x ranges from 3.8 to 4.2 and y ranges from 0.11 to 0.14, d ranges from 16.25 to 17, e ranges from 2.75 to 3.5, wherein the alloy has a critical rod diameter of at least 6 mm.

10. The alloy of claim 7 , wherein a is greater than 2 and up to 15, b ranges from 7.5 to 11, c ranges from 2.75 to 3.25, d ranges from 16.25 to 16.75, e ranges from 2.75 to 3.25, and wherein the alloy has a critical rod diameter of at least 8 mm.

11. The alloy of claim 7 , wherein a is greater than 2 and up to 15, b ranges from 4 to 7.5, c ranges from 3.25 to 3.75, d ranges from 16.25 to 16.75, e ranges from 2.75 to 3.5, wherein the alloy has a critical rod diameter of at least 8 mm.

12. The alloy of claim 7 , wherein a is greater than 2 and up to 5, b ranges from 8 to 9.5, c ranges from 2.75 to 3.25, d ranges from 16.25 to 16.75, e ranges from 2.75 to 3.25, and wherein the alloy has a critical rod diameter of at least 9 mm, and wherein the metallic glass has notch toughness of at least 70 MPa m 1/2 .

13. The alloy of claim 7 , wherein a is greater than 2 and up to 5, b ranges from 5 to 6, c ranges from 3.25 to 3.75, d ranges from 16.25 to 16.75, e ranges from 2.75 to 3.25, and wherein the alloy has a critical rod diameter of at least 9 mm, and wherein the metallic glass has notch toughness of at least 80 MPa m 1/2 .

14. The alloy of claim 7 , wherein a is greater than 2 and up to 25, b ranges from 8 to 9.5, c ranges from 2.75 to 3.25, d ranges from 16.25 to 16.75, e ranges from 2.75 to 3.25, and wherein the metallic glass has ΔT x of at least 46° C.

15. The alloy of claim 7 , wherein a is greater than 2 and up to 25, b ranges from 5 to 6, c ranges from 3.25 to 3.75, d ranges from 16.25 to 16.75, e ranges from 2.75 to 3.25, and wherein the metallic glass has ΔT x of at least 41° C.

16. A metallic glass comprising an alloy according to claim 7 .

Assignees

• Glassimetal Tech Inc
• Apple Inc

Inventors

• Na Jong Hyun
• Crewdson Chase
• Abarca Oscar
• Duggins Danielle
• Launey Maximilien
• Demetriou Marios D
• Johnson William L

Classifications

• C22C45/04 Primary

  with nickel or cobalt as the major constituent · CPC title

• C22C1/11

  Making amorphous alloys · CPC title

• C22C1/002

  Chemistry & Metallurgy · mapped topic