High-strength high-toughness amorphous zirconium alloy
| Foreign code | F110005289 |
|---|---|
| File No. | E05103US |
| Posted date | Aug 29, 2011 |
| Country | United States of America |
| Application number | 58261100 |
| Gazette No. | 06521058 |
| Date of filing | Jun 29, 2000 |
| Gazette Date | Feb 18, 2003 |
| International application number | PCT/JP99/05872 |
| International publication number | WO00/26425 |
| Date of international filing | Oct 25, 1999 |
| Date of international publication | May 11, 2000 |
| Priority data |
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| Title | High-strength high-toughness amorphous zirconium alloy |
| Abstract | An amorphous Zr alloy has a composition expressed as Zr--Ala --Nib --Cuc --Md. M is one or more elements selected from Ti, Nb and Pd. The a, b, c, and d are amounts in atomic %, and satisfy the following formulas. 5 <= a <= 0; 30 <= b+c <= 50; b/c <= 1/3; and 0<d <= 7. The remainder are Zr and inevitable impurities. The alloy contains a non-crystalline phase of 90% or higher by volume. Also, the amorphous alloy indicates an excellent glass-forming ability with a supercooled liquid range over 100 (degree) C. (indicated by a difference between the crystallization temperature and the glass transition temperature) and which has a thickness of 1 mm or thicker. Further, it has excellent strength and toughness indicated by the following mechanical characteristics: tensile strength of 1800 MPa or higher; flexural strength of 2500 MPa or higher; Charpy impact value of 100 kJ/m2 or higher; and fracture toughness value of 50 MPa*m1/2 or higher. |
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| IPC(International Patent Classification) |
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| Reference ( R and D project ) | ERATO INOUE Superliquid Class AREA |
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