Method for producing an at least partly amorphous alloy piece

Details Method for producing an at least partly amorphous alloy piece Method for producing an at least partly amorphous alloy piece

1987-05-11

1989-01-10

Andrews, Melvyn J.

Metal treatment

Compositions

Heat treating

148403, C21D 126

Patent

active

047971665

ABSTRACT:
An alloy, e.g. a Cr-Ti alloy, is transformed to a metastable crystal modification, e.g., by heating in an electric arc and quenching in water. The metastable crystal modification is annealed at a temperature which is below the glass temperature, e.g. at 600.degree. C. during 48 hours, causing it to vitrify completely.
The inventive method provided the production of large pieces of hard and non-porous amorphous alloy with thicknesses in the centimeter range.

REFERENCES:
patent: 4226647 (1980-10-01), Schulson et al.
patent: 4639363 (1987-01-01), Komatsu et al.

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