Journal
MODERN PHYSICS LETTERS B
Volume 36, Issue 4, Pages -Publisher
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0217984921505369
Keywords
Diffusion equation; activated recrystallization; recrystallization front; grain boundary diffusion
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New phenomenological models of recrystallization of a polycrystalline material, considering the finite width of grain boundaries, were proposed. Analytical solutions for the initial-boundary value problems were obtained, describing the distributions of impurity concentration diffusing from the surface coating in both grain boundaries and the recrystallized grain region. The speed of recrystallization front movement was indicated to be consistent with experimental observations of corresponding kinetic dependences.
New phenomenological models of recrystallization of a polycrystalline material in two regimes are proposed taking into account the finite width of grain boundaries. The solutions are obtained in an analytical form for the initial-boundary value problems formulated. They describe the distributions of the concentration of impurities diffusing from the surface coating, both in the grain boundary and in the grain itself in the recrystallized region. The speed of the recrystallization front movement is indicated, which agrees with the types of the corresponding kinetic dependences observed in experiments.
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