Zirconium-rich bulk metallic glass alloys

• US 20060076089A1
• Filed: 10/12/2004
• Published: 04/13/2006
• Est. Priority Date: 10/12/2004
• Status: Active Grant

• Current Assignee: Wisconsin Alumni Research Foundation (University of Wisconsin System)
• Original Assignee: Wisconsin Alumni Research Foundation (University of Wisconsin System)
• Inventors: Chang, Y. Austin, Cao, Hongbo, Ma, Dong, Hsieh, Ker-chang, Ding, Ling
• Granted Patent: US 7,368,023 B2
• Time in Patent Office: Days
• US Class Current: 148/403
• CPC Class Codes: C22C 45/10 with molybdenum, tungsten, niobium, tantalum, titanium, or zirconium or Hf as the major constituent

Abstract

Zirconium-rich bulk metallic glass alloys include quinary alloys containing zirconium, aluminum, titanium, copper and nickel. The bulk metallic glass alloys may be provided as completely amorphous pieces having cross-sectional diameters of at least about 5 mm or even greater.

Claims

1. A metallic glass piece comprising an amorphous alloy comprising:

(a) about 28 to 45 atomic percent copper;

(b) about 1 to 12 atomic percent nickel;

(c) about 1 to 15 atomic percent aluminum;

(d) about 0.05 to 10 atomic percent titanium; and

(e) about 35 to 70 atomic percent zirconium;

wherein the content of copper plus nickel in the alloy is about 25 to 50 atomic percent and further wherein the alloy is substantially free of tantalum.

2. The metallic glass of claim 1 wherein the amorphous alloy comprises at least about 30 atomic percent copper.

3. The metallic glass piece of claim 1 wherein the piece has a diameter of at least about 5 mm.

4. The metallic glass piece of claim 1 wherein the piece has a diameter of at least about 10 mm.

5. The metallic glass piece of claim 1 wherein the amorphous alloy comprises no more than about 2 atomic percent of other transition metals.

6. The metallic glass piece of claim 1 wherein the amorphous alloy comprises no more than about 1 atomic percent of other transition metals.

7. The metallic glass piece of claim 1 wherein the amorphous alloy is substantially free of beryllium.

8. The metallic glass piece of claim 1 wherein the amorphous alloy comprises:

(a) about 28 to 42 atomic percent copper;

(b) about 2 to 12 atomic percent nickel;

(c) about 1 to 10 atomic percent aluminum;

(d) about 0.05 to 5 atomic percent titanium; and

(e) about 40 to 68 atomic percent zirconium.

9. The metallic glass piece of claim 1 wherein the amorphous alloy comprises:

(a) about 30 to 45 atomic percent copper;

(b) about 2 to 10 atomic percent nickel;

(c) about 5 to 15 atomic percent aluminum;

(d) about 0.1 to 8 atomic percent titanium; and

(e) about 38 to 52 atomic percent zirconium.

10. The metallic glass piece of claim 9 wherein the amorphous alloy comprises about 32 to 42 atomic percent copper.

11. The metallic glass piece of claim 9 wherein the amorphous alloy comprises about 3 to 9 atomic percent nickel.

12. The metallic glass piece of claim 9 wherein the amorphous alloy comprises about 6 to 12 atomic percent aluminum.

13. The metallic glass piece of claim 9 wherein the amorphous alloy comprises about 0.05 to 6 atomic percent titanium.

14. The metallic glass piece of claim 9 wherein the amorphous alloy comprises about 40 to 50 atomic percent zirconium.

15. The metallic glass piece of claim 1 wherein the amorphous alloy comprises:

(a) about 28 to 35 atomic percent copper;

(b) about 1 to 10 atomic percent nickel;

(c) about 5 to 15 atomic percent aluminum;

(d) about 1 to 10 atomic percent titanium; and

(e) about 40 to 65 atomic percent zirconium.

16. The metallic glass piece of claim 15 wherein the amorphous alloy comprises about 28 to 32 atomic percent copper.

17. The metallic glass piece of claim 15 wherein the amorphous alloy comprises about 2 to 9 atomic percent nickel.

18. The metallic glass piece of claim 15 wherein the amorphous alloy comprises about 8 to 10 atomic percent aluminum.

19. The metallic glass piece of claim 15 wherein the amorphous alloy comprises about 2 to 7 atomic percent titanium.

20. The metallic glass piece of claim 15 wherein the amorphous alloy comprises about 45 to 60 atomic percent zirconium.

21. A metallic glass piece comprising an amorphous alloy comprising:

(a) about 0.1 to 3 atomic percent copper;

(b) about 18 to 25 atomic percent nickel;

(c) about 0.5 to 3 atomic percent aluminum;

(d) about 5 to 10 atomic percent titanium; and

(e) about 60 to 70 atomic percent zirconium.

22. The metallic glass piece of claim 21 wherein the amorphous alloy comprises:

(a) about 1 to 3 atomic percent copper;

(b) about 20 to 23 atomic percent nickel;

(c) about 1 to 2 atomic percent aluminum;

(d) about 7 to 9 atomic percent titanium; and

(e) about 65 to 68 atomic percent zirconium.

23. The metallic glass piece of claim 21 wherein the piece has a diameter of at least about 5 mm.

24. The metallic glass piece of claim 21 wherein the piece has a diameter of at least about 10 mm.

25. The metallic glass piece of claim 21 wherein the amorphous alloy comprises no more than about 2 atomic percent of other transition metals.

26. The metallic glass piece of claim 21 wherein the amorphous alloy comprises no more than about 1 atomic percent of other transition metals.

27. The metallic glass piece of claim 21 wherein the amorphous alloy is substantially free of beryllium.

28. The metallic glass piece of claim 21 wherein the amorphous alloy is substantially free of tantalum.

30. The metallic glass piece of claim 24 wherein the piece has a diameter of at least about 5 mm.

31. The metallic glass piece of claim 24 wherein the piece has a diameter of at least about 10 mm.

32. The metallic glass piece of claim 24 wherein the amorphous alloy comprises no more than about 2 atomic percent of other transition metals.

29. A metallic glass piece comprising an amorphous alloy comprising:

(a) about 20 to 30 atomic percent copper;

(b) about 0.01 to 4 atomic percent nickel;

(c) about 5 to 15 atomic percent aluminum;

(d) about 0.5 to 5 atomic percent titanium; and

(e) about 55 to 65 atomic percent zirconium;

wherein the alloy is substantially free of tantalum.

33. A metallic glass piece comprising an amorphous alloy comprising:

(a) about 0.5 to 25 atomic percent copper;

(b) about 20 to 60 atomic percent nickel;

(c) about 0.1 to 15 atomic percent aluminum;

(d) about 10 to 30 atomic percent titanium; and

(e) about 15 to 30 atomic percent zirconium;

wherein the alloy is substantially free of tantalum.

34. The metallic glass piece of claim 33 wherein the amorphous alloy comprises:

(a) about 1 to 10 atomic percent copper;

(b) about 40 to 60 atomic percent nickel;

(c) about 0.1 to 5 atomic percent aluminum;

(d) about 18 to 29 atomic percent titanium; and

(e) about 20 to 27 atomic percent zirconium

35. The metallic glass piece of claim 33 wherein the amorphous alloy comprises:

(a) about 22 to 26 atomic percent copper;

(b) about 24 to 28 atomic percent nickel;

(c) about 9 to 13 atomic percent aluminum;

(d) about 10 to 15 atomic percent titanium; and

(e) about 24 to 28 atomic percent zirconium

36. The metallic glass piece of claim 33 wherein the piece has a diameter of at least about 5 mm.

37. The metallic glass piece of claim 33 wherein the piece has a diameter of at least about 10 mm.

38. The metallic glass piece of claim 33 wherein the amorphous alloy comprises no more than about 2 atomic percent of other transition metals.

39. The metallic glass piece of claim 33 wherein the amorphous alloy comprises no more than about 1 atomic percent of other transition metals.

40. A metallic glass piece comprising an amorphous alloy consisting essentially of:

(a) copper;

(b) nickel;

(c) aluminum;

(d) titanium; and

(e) zirconium;

wherein the bulk metallic glass piece has a completely amorphous structure over a diameter of at least about 5 mm.

41. The bulk metallic glass piece of claim 40 having a completely amorphous structure over a diameter of at least about 10 mm.