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A Kinetic Model of Precipitate Evolution

Published online by Cambridge University Press:  21 February 2011

C. Lane Rohrer ,
M. D. Asta ,
S. M. Foiles  and
R. W. Hyland Jr.
C. Lane Rohrer
Affiliation:
Aluminum Company of America, Alcoa Technical Center, Alcoa Center, PA, 15069
M. D. Asta
Affiliation:
Sandia National Laboratories, Livermore, CA, 94551
S. M. Foiles
Affiliation:
Sandia National Laboratories, Livermore, CA, 94551
R. W. Hyland Jr.
Affiliation:
Aluminum Company of America, Alcoa Technical Center, Alcoa Center, PA, 15069
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Abstract

Chemical reaction rate theory is used to model the kinetics of precipitation reactions in Al alloys, including the effects of continuous cooling and thermally generated point defects. The computational method models the processes of nucleation, growth, and coarsening within a single framework. Calculated time and temperature dependent precipitate number densities and sizes during the homogeneous precipitation of the A13Sc phase in an Al-.11 at% Sc alloy are shown to compare favorably with experimental observations.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 398: Symposium C – Thermodynamics and Kinetics of Phase Transformations , 1995 , 477
Copyright
Copyright © Materials Research Society 1998

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References

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