Free energy, Grain boundary, Microstructure, Mobility functions
This work was supported primarily by the MRSEC Program of the National Science Foundation under Award Number DMR-9632556. This paper describes a method for extracting, from measurements of a polycrystal, the relative excess free energy and the relative mobility of the grain boundaries as functions of the crystallographic type (five degrees of freedom) and relevant thermodynamic variables. The method requires the simultaneous measurement of both the geometry and the crystallography of a large number of grain boundary intersections; the crystallographic information may be obtained from orientation imaging microscopy (OIM). For simplicity, the intersections will be assumed to be triple junctions (three intersecting boundaries). The energies and mobilities are obtained as ratios to repsective standards that must be determined independently.
Original Publication Citation
Scripta Materialia, Vol. 38, No. 4, pp. 531-536, 1998
BYU ScholarsArchive Citation
Adams, Brent L.; Kinderlehrer, D.; Mullins, W. W.; Rollett, Anthony D.; and Ta'asan, Shlomo, "Extracting the Relative Grain Boundary Free Energy and Mobility Functions from the Geometry of Microstructures" (1997). All Faculty Publications. 658.
Ira A. Fulton College of Engineering and Technology
© 1997 Brent L. Adams, D. Kinderlehrer, W.W. Mullins, Anthony Rollett, and Shlomo Ta'asan
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