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US 4,584,036 AGranted
Hot working of amorphous alloys
AssigneeGeneral Electric Company
InventorsAlan I. Taub, Peter G. Frischmann
Life of this patent
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Abstract
The problem of working an amorphous alloy is overcome by heating the alloy at a rate of temperature increase above a certain rate. The amorphous alloy is worked as its temperature is still being increased. Desirable magnetic properties of the alloy are preserved by working the alloy in this fashion and also tool life is extended.
Claims9
A method of forming an amorphous alloy without destroying its magnetic properties which comprises
- providing an amorphous alloy specimen,
- ramping the temperature of the specimen at a rate which preserves its viscosity at a low value,
- heating the specimen to above its softening temperature,
- continuing to ramp the temperature above the softening temperature but below the crystallization temperature as the specimen is stressed, and
- stressing the specimen at or below its yield strength to strain the specimen while the temperature is being ramped.
2 more elements
A method of forming an amorphous alloy without destroying its magnetic properties which comprises
- providing an amorphous alloy specimen,
- ramping the temperature of the specimen at a rate dT/dt which can bring the temperature ratio T.degree.K./T.sub.x .degree.K., to within the hatched area of the graph of FIG. 2,
- continuing to ramp the temperature while the coordinates of the ramping rate and temperature ratio are within the hatched area of FIG. 2, and
- stressing the specimen at or below its yield strength to strain the specimen while the temperature is being ramped.
1 more element
Dependencies are inferred from the claim text.