Abstract
AbstractThe method of transmission electron microscopy is used to study the grain-subgrain structure of the Ti–50.9 at % Ni nanocrystalline alloy after heat treatments at 300–500°C. It is found that the decomposition of the B_2 solid solution of TiNi by the heterogeneous mechanism occurs in the subgrain structure, while the Ti_3Ni_4 particles are not observed in nanograins. The features of the recovery and recrystallization of the alloy and their relationship with the processes of dissolution and precipitation of Ti_3Ni_4 particles are revealed.
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