Comparative Investigation of the Influence of Ultrafine-Grained State on Deformation and Temperature Behavior and Microstructure Formed during Quasi-Static Tension of Pure Titanium and Ti-45Nb Alloy by Means of Infrared Thermography

A comprehensive study was performed of the deformation and temperature behavior during quasi-static tension, as well as the peculiarities of accumulation and dissipation of energy during plastic deformation. Microstructural analysis at the pre-fracture stage of pure titanium and Ti-45Nb alloy in the...

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Bibliographic Details
Published in:Materials 2022-11, Vol.15 (23), p.8480
Main Authors: Legostaeva, Elena, Eroshenko, Anna, Vavilov, Vladimir, Skripnyak, Vladimir A, Chulkov, Arsenii, Kozulin, Alexander, Skripnyak, Vladimir V, Glukhov, Ivan, Sharkeev, Yurii
Format: Article
Language:English
Subjects:
Accumulation
Alloys
Cellular communication
Cellular structure
Comparative analysis
Deformation
Deformation analysis
Dispersion hardening
Energy dissipation
Fractures
Grain boundaries
Heat
Infrared imaging
Investigations
Mechanical properties
Metals
Microstructural analysis
Microstructure
Plastic deformation
Research methodology
Specialty metals industry
Thermography
Titanium
Titanium alloys
Titanium base alloys
Ultrafines
Yield stress
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Summary:A comprehensive study was performed of the deformation and temperature behavior during quasi-static tension, as well as the peculiarities of accumulation and dissipation of energy during plastic deformation. Microstructural analysis at the pre-fracture stage of pure titanium and Ti-45Nb alloy in the coarse grain (CG) and ultrafine-grained (UFG) states was also conducted. It was shown that substructural and dispersion hardening leads to a change in the regularities of dissipation and accumulation energies during deformation of the samples of the pure titanium and Ti-45Nb alloy in the UFG state. Some features of structural transformations during deformation of the pure titanium and Ti-45Nb alloy samples in the CG and UFG states were studied. A band and cellular-network and fragmented dislocation structure was formed in the case of the CG state, while large anisotropic fragments were formed in the UFG state, thus specifying a local softening of the material before fracture.
ISSN:1996-1944
1996-1944
DOI:10.3390/ma15238480