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Solidification Studies of Nb-Ge Alloys at Large Degrees of Supercooling

Published online by Cambridge University Press:  15 February 2011

L. L. Lacy ,
M.B. Robinson ,
T.J. Rathz ,
N. D. Evans  and
R. J. Bayuzick
L. L. Lacy
Affiliation:
Exxon Corporation, Houston, Texas
M.B. Robinson
Affiliation:
NASA, Marshall Space Flight Center, Alabama
T.J. Rathz
Affiliation:
NASA, Marshall Space Flight Center, Alabama
N. D. Evans
Affiliation:
Vanderbilt University, Nashville, Tennessee
R. J. Bayuzick
Affiliation:
Vanderbilt University, Nashville, Tennessee
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Abstract

A 32 meter evacuated drop tube has been used to investigate the solidification of Nb-Ge alloys after deep undercooling. Samples have been supercooled as much as 500°K below the liquidus by using free-fall conditions to eliminate crucible induced nucleation. Final microstructures are dependent on the quenching rates at the bottom of the drop tube with a striking extension of the β phase solubility limit at the higher quenching rates.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 9 , 1981 , 87
Copyright
Copyright © Materials Research Society 1982

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References

REFERENCES

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6.Evans, N. D., Bayuzick, R. J., Rahtz, T. J. and Robinson, M. B., to be published.Google Scholar