Atomic Structure of Ti2NiCu Alloy after Severe Plastic Deformation by High Pressure Torsion and Heat Treatment

The paper presents the results of a comparative analysis of the structure of Ti 2 NiCu alloy subjected to severe plastic deformation by high pressure torsion and subsequent annealing. The structure of the alloy was studied using diffractometry, electron microscopy, X-ray and neutron techniques, as w...

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Bibliographic Details
Published in:Physics of metals and metallography 2023-12, Vol.124 (12), p.1286-1292
Main Authors: Kuranova, N. N., Makarov, V. V., Pushin, V. G.
Format: Article
Language:English
Subjects:
Atomic structure
Chemistry and Materials Science
Diffusion
Electron microscopy
Heat treatment
High pressure
Materials Science
Metallic Materials
Phase Transformations
Plastic deformation
Short range order
Structure
Superstructures
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Summary:The paper presents the results of a comparative analysis of the structure of Ti 2 NiCu alloy subjected to severe plastic deformation by high pressure torsion and subsequent annealing. The structure of the alloy was studied using diffractometry, electron microscopy, X-ray and neutron techniques, as well as transmission electron microscopy. The analysis has revealed the formation of an amorphous-crystalline state within the alloy, with B 2-lattice nanocrystallites present in the amorphous matrix. The analysis of diffuse maxima has indicated that the Ti 2 NiCu alloy, after subjecting to high pressure torsions till five turns, possesses topological and compositional short-range order in the form of nanodomains with a superstructure arranged by B 2 and L 2 1 order.
ISSN:0031-918X
1555-6190
DOI:10.1134/S0031918X23602366