Features of recrystallization during annealing of nanocrystalline Ti–50.9 at. % Ni alloy

Grain structure and substructure of a nanocrystalline Ti–50.9 at. % Ni alloy was investigated using the transmission electron microscopy. The regularities of recovery and recrystallization processes of the alloy structure after annealing at 500°C are revealed. It is shown that the subgrain structure...

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Bibliographic Details
Main Authors: Poletika, Tamara M., Girsova, Svetlana L., Lotkov, Aleksandr I.
Format: Conference Proceeding
Language:English
Subjects:
Annealing
Coagulation
Coalescing
Grain structure
Grain sub boundaries
Nanocrystals
Recovery
Recrystallization
Substructures
Titanium base alloys
Transmission electron microscopy
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Summary:Grain structure and substructure of a nanocrystalline Ti–50.9 at. % Ni alloy was investigated using the transmission electron microscopy. The regularities of recovery and recrystallization processes of the alloy structure after annealing at 500°C are revealed. It is shown that the subgrain structure inhibits recrystallization due to the presence of Ti3Ni4 coherent particles at the subgrain boundaries. The coalescence of subgrains is a main mechanism of recrystallization in a substructure. A relationship between recovery and recrystallization and the dissolution and coagulation of Ti3Ni4 particles was found.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.5083486