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Effect of Cooling Rate on the Structure of Rapidly Cooled Fe75Si15 B10

Published online by Cambridge University Press:  21 February 2011

John L. Walter  and
Ami E. Berkowitz
John L. Walter
Affiliation:
General Electric Company, Corporate Research and Development, Schenectady, NY 12301
Ami E. Berkowitz
Affiliation:
General Electric Company, Corporate Research and Development, Schenectady, NY 12301
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Extract

Solidification of metal alloys by rapid quenching can result in the formation of amorphous or microcrystalline solids, or materials with improved microstructural homogeneity, all with the view of forming new phases or obtaining improved properties. Some alloys may be cooled at high rates to achieve “microcrystallinity” but cannot be cooled rapidly enough to become amorphous. Other alloys may achieve both conditions depending on the cooling rate. We have examined the effects of cooling rate on the structure of one alloy that can, depending on the cooling rate, be made partially or completely amorphous. The alloy is Fe75Si15B10 (atom percent) which was formed as ribbon by melt spinning and as powder by spark erosion in dielectrics of different cooling characteristics and by gas-water atomization. The structural characteristics were determined by x-ray diffraction, measurements of magnetic properties and by optical and scanning electron microscopy.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 28: Symposium F – Rapidly Solidified Metastable Materials , 1983 , 175
Copyright
Copyright © Materials Research Society 1984

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References

REFERENCES

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