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Some Fundamental Considerations During Rapid Solidification Processing

Published online by Cambridge University Press:  21 February 2011

V. Laxmanan
V. Laxmanan*
Affiliation:
Research Engineer, Department of Metallurgy and Materials Science, Case Western Reserve University, Cleveland, Ohio 44116. Concurrently, Visiting Scientist, NASA Lewis Research Center, Mail Stop 49–3, Cleveland, Ohio 44135.
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Abstract

Three estimates of the solidification rates required to obtain a fully homogeneous structure during rapid solidification processing (RSP) have been made. One is given by the “absolute stability” criterion and another obtained from a new analysis for dendritic solidification. The third estimate, also derived from the above analysis, requires that “hypercooled” conditions be maintained after nucleation. A mechanism for the formation of “featureless” segregation-free zones during melt spinning and atomization processes is suggested and expressions for the critical cooling rate and thermal gradient required to produce such structures have been obtained.

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Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 28: Symposium F – Rapidly Solidified Metastable Materials , 1983 , 21
Copyright
Copyright © Materials Research Society 1984

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References

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