Rod-shaped or tubular amorphous Zr alloy made by die casting and

Details Rod-shaped or tubular amorphous Zr alloy made by die casting and Rod-shaped or tubular amorphous Zr alloy made by die casting and

1996-05-21

1998-09-08

Sheehan, John

Metal treatment

Process of modifying or maintaining internal physical...

Heating or cooling of solid metal

148 58, 164423, 164463, 164465, C22F 118

Patent

active

058039961

ABSTRACT:
An alloy material 4 received in a melting hearth 1 is melted by high-density energy supplied from a heat source 5. The molten alloy is transferred to a forced-cooled die 3 having a cavity 2 defining the profile of a product, and quenched to an amorphous state. The alloy has the composition represented by the general formula of Zr.sub.100-a-b-c A.sub.a B.sub.b C.sub.c (wherein the mark A represents one or more elements selected from Ti, Hf, Al and Ga, the mark B represents one or more elements selected from Fe, Co, Ni and Cu, the mark C represents one or more elements selected from Pd, Pt, Au and Ag, and the marks a-c represent the atomic ratios of respective elements A-C under the conditions of a=5-20, b=15-45, c.ltoreq.10 and a+b+c=30-70. The differential temperature region .DELTA.T (=T.sub.x -T.sub.g) in the supercooled liquid phase of the Zr alloy represented by the difference between the crystallization point T.sub.x and the glass transition point T.sub.g, is preferably 100 K or more. The obtained amorphous alloy has a rod-shaped or tubular profile having a large cross section and being excellent in plastic workability.

REFERENCES:
patent: 4148669 (1979-04-01), Tanner et al.
patent: 4171992 (1979-10-01), Tanner et al.
patent: 4546816 (1985-10-01), Schwarz
patent: 5296059 (1994-03-01), Masumoto et al.
patent: 5368659 (1994-11-01), Peker et al.
The Abstracts of The 44th Combined Lectures On Plastic Working, p. 445 (Sep. 30-Oct. 02, 1993).
The Abstracts of The 115th Seminar, Japan Metal Society, No. 907, (1994).

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