Influence of Strain Rate Effects on the Structure and Mechanical Properties of the Fully Austenitic High Mn Steels under Dynamic Impact Deformation

Abstract:

The article presents the dynamic mechanical properties of two types of high manganese austenitic steels. The investigation were carried out for the wide range of strain rates from 1×10^-4s^-1 up to 4×10³s^-1 using servo-hydraulic testing machine and Hopkinson bar for the quasi-static and dynamic loading regime, respectively. The mechanical properties at different strain rates as well as the SEA indicator calculated were carried out on the base of the results of impact tests. In the next step, the microstructure of the steel after different deformation rate was observed and analyzed by light microscope in order to disclose a TWIP effect.

• Periodical: Solid State Phenomena (Volume 246)
• Pages: 39-42
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.246.39
• Online since: February 2016
• Authors: Magdalena Jabłońska, Wojciech Moćko, Kinga Rodak, Rafał Michalik, Anna Śmiglewicz*
• Keywords: Dynamic Impact Deformation, Fully Austenitic High Mn Steel, Hopkinson Split Bar, Mechanical Properties, Structure

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