| 摘要 |
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 Zr100-a-b-cAaBbCc (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</=10 and a+b+c=30-70. The differential temperature region DELTA T (=Tx-Tg) in the supercooled liquid phase of the Zr alloy represented by the difference between the crystallization point Tx and the glass transition point Tg, 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.
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