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Metals 2018, 8(9), 736; https://doi.org/10.3390/met8090736

Experimental Study on the Mechanical Behavior of EN08 Steel at Different Temperatures and Strain Rates

1
Department of Civil Engineering, American University of Sharjah, Sharjah 26666, UAE
2
Material Science and Engineering Institute, American University of Sharjah, Sharjah 26666, UAE
3
Laboratoire Quartz, Supméca, 3, rue Fernand Hainaut, 93407 St Ouen CEDEX, France
4
Université Paris 8, IUT de Tremblay, 93290 Tremblay-en-France, France
*
Author to whom correspondence should be addressed.
Received: 17 August 2018 / Revised: 17 September 2018 / Accepted: 17 September 2018 / Published: 19 September 2018
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Abstract

The objective of this paper is to investigate the mechanical response of EN08 steel at quasi-static and dynamic strain rates. Uniaxial tensile tests under quasi-static regime (from 0.0015 s−1 to 0.15 s−1) are conducted on EN08 steel at a range of temperatures between 298 K and 923 K. Dynamic compression tests are also performed by using a drop hammer and by considering different masses and heights to study the material response at strain rates up to 800 s−1. Through the stress-strain responses of EN08 steel, a strong dependency of the yield stress as well as the ultimate strength on the strain rate and temperature is recognized. Furthermore, the strain hardening is highly affected by the increase of temperature at all levels of strain rate. The microstructure of the steel is also examined at a fracture by using SEM images to quantify the density of microdefects and define the damage evolution by using an energy-based damage model. View Full-Text
Keywords: EN08 steel; mechanical behavior; temperature; strain rate; damage EN08 steel; mechanical behavior; temperature; strain rate; damage
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Abed, F.; Abdul-Latif, A.; Yehia, A. Experimental Study on the Mechanical Behavior of EN08 Steel at Different Temperatures and Strain Rates. Metals 2018, 8, 736.

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