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Published 1992 | public
Book Section - Chapter

Kinetic States of Order in Highly Nonequilibrium Materials

Abstract

Two concepts from the kinetic theory of disorder→order transformations are presented. Kinetics provides control over the path taken en route to equilibrium, permitting different types of microstructures to be synthesized. Variations in microstructural evolution can be parameterized by two or more order parameters. "Kinetic paths" through two or more order parameters are convenient for experimental study because they are independent of the vacancy concentration in the material. Saddle points in the free energy surface have little consequence to the thermodynamic state, but if an alloy approaches a saddle point its kinetic evolution tends to stall. This stalled state is an example of a "pseudostable" state.

Additional Information

© Elsevier Science Publishers Ltd 1992. I am delighted to acknowledge stimulating conversations with R. Kikuchi, T. Mohri, J. Sanchez, D. de Fontaine, P. Cenedese, L. Anthony, and K. Wada. With such colleagues, science cannot be dull. Theoretical work on pseudostability was supported by a Grant for International Research from NEDO, Japan. This work was supported by the U. S. Department of Energy under contract DE-FG03-86ER45270.

Additional details

Created:
August 22, 2023
Modified:
October 20, 2023