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The article presents the authors' insights on the change of metal crystals' internal structure under the migration effect of grain boundaries. The authors say that metal crystals boundary volumes deform under high-temperature deformation that leads to smooth or jumplike change of a substructure. The authors are critical on the main factors and mechanisms that change the orientation and development of the substructure of metal crystals in the crystallization process. more...

The article focuses on the impact of the difference between the thermal expansion coefficients of phases on the nucleation and growth of crystallites in the crystallization and recrystallization of metals. It notes that the difference between the thermal expansion coefficients of phases is responsible for gaining the nanocrystalline alloy Fe73.5Cu1Nb3Si13.5B9. The difference explains some features of the grain growth in recrystallization. more...