Macroscopic strain localization in polycrystalline nickel

The present work is aimed at studying plastic strain localization in the technically pure polycrystalline nickel (with the nickel content of no less than 99.5%) at room temperature. Plastic strain localization under uniaxial tension at a constant rate is accompanied by discontinuous flow. It is show...

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Bibliographic Details
Main Authors: Nadezhkin, M. V., Barannikova, S. A., Gorbatenko, V. V., Zuev, L. B.
Format: Conference Proceeding
Language:English
Subjects:
Nickel
Plastic deformation
Plastic flow
Polycrystals
Room temperature
Strain localization
Stress-strain curves
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Summary:The present work is aimed at studying plastic strain localization in the technically pure polycrystalline nickel (with the nickel content of no less than 99.5%) at room temperature. Plastic strain localization under uniaxial tension at a constant rate is accompanied by discontinuous flow. It is shown that the plastic flow is entirely manifested by Portevin–Le Chatelier strain bands, whose origin is associated with a stress drop in the stress-strain curve. The kinetics regularities of these bands are established, as well.
ISSN:0094-243X
1551-7616
DOI:10.1063/5.0034077