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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.

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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