Influence of crystallography upon critical nucleus shapes and kinetics of homogeneous f.c.c.-f.c.c. nucleation—III. The influence of elastic strain energy

摘要: Abstract The influence of crystallography upon critical nucleus shapes and kinetics homogeneous f.c.c.-f.c.c. nucleation was studied by combining the discrete lattice point non-classical model utilized in paper II this series with microscopic theory strain energy as applied Cook de Fontaine to compositional fluctuations cubic lattices. This permits simultaneous consideration anistropic interfacial anisotropic nucleation. is extremely difficult do using other models because mathematical problems. f.c.c. nuclei Al Cu Co alloys. Nuclei are plates coherency predominates system. In alloys, misfit smaller distortion tensor cubic; thus essentially spherical. Despite lesser effect, Co-rich precipitates a Cu-rich alloy found be very important, reducing these much five orders magnitude.