Dynamic Tensile Testing of High Strength Armor Steel Plates

Abstract:

In this paper was studied dynamic behavior of the armor steels Armox 500T and Secure 500 by testing specimens in quasi-static tensile test with strain rate 1∙10^-3 s^-1 and high-speed tensile test within range of intermediate strain rates from 100 s^-1 to 400s^-1 at the room temperature. Hardness test and quasi-static tensile test confirmed material properties specified by the manufacturer. Stress-strain diagrams showed very low strain-rate hardening effect at investigated strain rates. Total elongation at fracture was larger in case of Armox 500T for the whole strain rate range. Deformation energy density was calculated from the stress-strain curve and temperature rise due to adiabatic heating was estimated. Because of higher total elongation, Armox 500T was able to withstand higher deformation energy.

• Periodical: Key Engineering Materials (Volume 741)
• Pages: 70-75
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.741.70
• Online since: June 2017
• Authors: Radek Tomášek, Vratislav Mareš*
• Keywords: Armor Steel, Fractography, High Strain Rate, Strain Rate Sensitivity, Tensile Test

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