Influence of preliminary plastic deformation of 12Kh18N12T steel on its mechanical properties

We have established that the preliminary plastic deformation of 12Kh18N12T austenitic steel causes cold-work hardening, which depends on the strain rate. With increase in the strain rate of specimens from 8∙10 −4 to 417∙10 −4  sec −1 , both strength (ultimate strength) and plasticity (percentage elo...

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Bibliographic Details
Published in:Materials science (New York, N.Y.) N.Y.), 2012, Vol.47 (4), p.438-446
Main Authors: Balyts’kyi, O. I., Eliasz, J., Ripei, I. V.
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Chemistry and Materials Science
Corrosion
Materials Science
Solid Mechanics
Steel
Structural Materials
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Summary:We have established that the preliminary plastic deformation of 12Kh18N12T austenitic steel causes cold-work hardening, which depends on the strain rate. With increase in the strain rate of specimens from 8∙10 −4 to 417∙10 −4  sec −1 , both strength (ultimate strength) and plasticity (percentage elongation) characteristics of 12Kh18N12T steel decrease. After holding of the preliminarily work-hardened steel at a temperature of 650°C, its strength increases, and its plasticity decreases. At the same time, the isothermal influence for 1 and 10 h does not facilitate intercrystalline corrosion of the steel during its holding in a corrosive medium for 24 h.
ISSN:1068-820X
1573-885X
DOI:10.1007/s11003-012-9414-0