Effect of Alternating Cold Elastoplastic Deformation on Austenitic Decomposition during Tension of 08Kh18N10 Steel

The effect of preliminary cold alternating elastoplastic deformation of 08Kh18N10 steel on the austenitic transformation caused by tension in the uniform deformation region (before necking) is investigated. This preliminary deformation is shown not to change the phase composition and structural stat...

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Bibliographic Details
Published in:Russian metallurgy Metally 2022, Vol.2022 (1), p.29-34
Main Authors: Shelest, A. E., Yusupov, V. S., Perkas, M. M., Muradyan, S. O., Kaplan, M. A.
Format: Article
Language:English
Subjects:
Austenitic stainless steels
Chemistry and Materials Science
Deformation effects
Elastoplasticity
Elongation
Magnetometers
Martensite
Materials Science
Metallic Materials
Necking
Phase composition
Strain
Ultimate tensile strength
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Summary:The effect of preliminary cold alternating elastoplastic deformation of 08Kh18N10 steel on the austenitic transformation caused by tension in the uniform deformation region (before necking) is investigated. This preliminary deformation is shown not to change the phase composition and structural state of the steel. Magnetometer measurements during tension and metallographic examinations after tension reveal a considerable amount of magnetic phase, strain-induced martensite, in the uniform deformation region. Cold elastoplastic deformation increases the yield strength of the steel by 20–25%, slightly increases the ultimate tensile strength, and decreases the relative elongation by 10–15%. Martensite starts to form at lower uniform plastic strains in preliminary deformed specimens, and its fraction at the maximum uniform strain is higher.
ISSN:0036-0295
1555-6255
1531-8648
DOI:10.1134/S0036029522010104