| 摘要 |
PURPOSE: To provide certain Zr-based amorphous alloys that can be made from commercially available raw materials and that can be conventionally cast to a substantially greater thickness while retaining a bulk amorphous microstructure. CONSTITUTION: The amorphous alloy is represented by the atomic formula: (Zr,Hf)a(Al,Zn)bTie,Nbf,TagYh(CuxFey(Ni,Co)z)d, wherein a ranges from 45 to 65 atomic %, b ranges from 5 to 15 atomic %, e and f each ranges from 0 to 4.5 atomic %, g ranges from greater than 0 to 2 atomic %, h ranges from 0 to 0.5 atomic %, and the balance is d and incidental impurities and wherein e+f+g ranges from 3.5 to 7.5 atomic %, d times y is less than 10 atomic %, and x/z ranges from 0.5 to 2, wherein g ranges from 1 to 2 atomic %, wherein h ranges from 0.1 to 0.4 atomic %, wherein Ti and Nb are both present and e+f is less than about 4 atomic %, and wherein e=1.5 atomic %, f=1.5 atomic % and g=1.5 atomic %. The amorphous alloy consists essentially of, in atomic %, about 54 to about 57 % Zr, 0 to about 4 % Ti, 0 to about 4 % Nb, greater than 0 to about 2 % Ta, about 8 to about 12 % Al, about 14 to about 18 % Cu, about 12 to about 15 % Ni, and 0 to about 0.5 % Y.
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