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Hysteresis of Long-Range Ordering in CuAu

Published online by Cambridge University Press:  21 February 2011

B. Chalupa ,
F. Chmelik ,
V. Sima ,
B. Sprusil ,
M. Spanl ,
H. Lang  and
W. Pfeiler
B. Chalupa
Affiliation:
Institute of Metal Physics, Charles University, Ke Karlovu 5, CS-121 16 Praha, Czech Republic
F. Chmelik
Affiliation:
Institute of Metal Physics, Charles University, Ke Karlovu 5, CS-121 16 Praha, Czech Republic
V. Sima
Affiliation:
Institute of Metal Physics, Charles University, Ke Karlovu 5, CS-121 16 Praha, Czech Republic
B. Sprusil
Affiliation:
Institute of Metal Physics, Charles University, Ke Karlovu 5, CS-121 16 Praha, Czech Republic
M. Spanl
Affiliation:
Institut für Festkörperphysik, University of Vienna, Strudlhofgasse 4, A-1090 Vienna, Austria
H. Lang
Affiliation:
Institut für Festkörperphysik, University of Vienna, Strudlhofgasse 4, A-1090 Vienna, Austria
W. Pfeiler
Affiliation:
Institut für Festkörperphysik, University of Vienna, Strudlhofgasse 4, A-1090 Vienna, Austria
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Abstract

The effect of heating and cooling on the long-range order transformation in stoichiometric CuAu is investigated by several complementary measuring methods. Measurements of heat flow, resistometry and acoustic emission are done dynamically by linear heating/cooling. It is shown that measuring dynamically yields the expected effect of undercooling, which decreases with decreasing cooling rate. The dependence of undercooling on cooling rate is compared with the concept of continuous cooling for glass forming. A small influence of heating rate on disordering temperature is reported (retro-effect).

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 398: Symposium C – Thermodynamics and Kinetics of Phase Transformations , 1995 , 581
Copyright
Copyright © Materials Research Society 1998

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References

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