Title:
HIGH-STRENGTH HIGH-TOUGHNESS AMORPHOUS ZIRCONIUM ALLOY
Document Type and Number:
WIPO Patent Application WO/2000/026425
Kind Code:
A1
Abstract:
An amorphous zirconium alloy which has a composition represented by the formula Zr-Al¿a?-Ni¿b?-Cu¿c?-M¿d? (wherein M is at least one element selected from the group consisting of Ti, Nb, and Pd; a, b, c, and d respectively are numbers in at.% satisfying the relationships 5 a 10, 30 b+c 50, b/c 1/3, and 0$m(f)d 7; and the remainder consists of Zr and unavoidable impurities) and at least 90 vol.% of which is accounted for by an amorphous phase. The alloy with excellent strength and toughness has such an excellent amorphous-phase-forming ability that the supercooled liquid region has a width of 100 °C or larger and has such mechanical properties at a thickness of 1 mm or larger that the tensile strength is 1,800 MPa or higher, the folding strength is 2,500 MPa or higher, the Charpy impact strength is 100 kJ/m?2¿ or higher, and the fracture toughness is 50 MPa•m?1/2¿ or higher.
Inventors:
INOUE AKIHISA (JP)
Application Number:
PCT/JP1999/005872
Publication Date:
May 11, 2000
Filing Date:
October 25, 1999
Export Citation:
Assignee:
JAPAN SCIENCE & TECH CORP (JP)
ZHANG TAU (JP)
INOE AKIHISA (JP)
ZHANG TAU (JP)
INOE AKIHISA (JP)
International Classes:
C22C16/00; C22C45/10; (IPC1-7): C22C16/00
Foreign References:
| JPH0762502A | 1995-03-07 | |||
| JPH07188877A | 1995-07-25 | |||
| JPH08199318A | 1996-08-06 | |||
| JPH10186176A | 1998-07-14 |
Other References:
See also references of EP 1063312A4
Attorney, Agent or Firm:
Nishi, Yoshiyuki (Nakahara 4-chome Isogo-ku, Yokohama-shi Kanagawa, JP)
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