Effect of strain rates on the forming properties of DP Steel at high-temperature

¹ Department of Mechanical Engineering, KG Reddy College of Engineering and Technology, Hyderabad, 501501, India.
² Department of Computer Science and Engineering, Keshav Memorial Institute of Technology, Hyderabad - 500029, India.
³ Department of Mechanical Engineering, Institute of Aeronautical Engineering, Hyderabad, 500043,, India.
⁴ Department of CSE, GRIET, Hyderabad, Telangana, India
⁵ Lovely Professional University, Phagwara, Punjab, India.

Abstract

Dual Phase steel grade, with its remarkable combination of features including formability and resistance to high temperatures, has been a revolutionary alloy in modern industry. It is a useful material that may be applied to many different tasks. It presents us with the task of examining its characteristics in response to changes in critical parameters such as temperature and loading rate during stretching operations. Understanding the formability behavior of DP steel sheets, which have a thickness of 1 mm, at various increased temperatures and strain rates was the main goal of the investigation. We investigated and examined the tensile characteristics at 650 and 750 degrees Celsius in the first investigation. On the other hand, because of flow stresses in the material at higher temperatures, elongation has decreased in value as deformation rates have increased. In addition, we plotted the FLDs experimentally and examined the formation behavior while performing the Nakazima Test on specimens with a thickness of 1 mm. Furthermore, a limiting dome height (LDH) study was conducted on a laboratory scale. In terms of temperature, the LDH was shown to be higher at 750 and at 0.001/s