High-temperature flow behaviour of grain-oriented and non-grain-oriented electrical steel. Issue 9 (13th June 2019)

• Record Type: Journal Article
• Authors: Giri, Sushil K.; Durgaprasad, A.; Thool, K.; Kundu, S.; Samajdar, I.
• Is Part Of: Materials science and technology. Volume 35:Issue 9(2019)
• Page Start: 1095
• Page End: 1106
• Publication Date: 2019-06-13
• Subjects: Electrical steel -- hot working -- flow stress -- phase transformation -- microstructure; Materials science -- Periodicals; Microstructure -- Periodicals; Metallurgy -- Periodicals; 620.1105
• DOI: 10.1080/02670836.2019.1612594
• Languages: English
• ISSNs: 0267-0836

Abstract

ABSTRACT: Plane strain compression tests were performed on grain-oriented (GO) and non-grain-oriented steel specimens of identical silicon content. Though Arrhenius type constitutive equations showed excellent predictability of the experimental flow stresses, there were clear differences in the flow curves of the respective grades. More specifically, GO steel had higher flow stress and work hardening and showed clear presence of dynamically recrystallized grains. All these were attributed to the higher (0.06 versus 0.003 wt-%) carbon content and corresponding presence of austenite, at elevated temperatures, in the GO steel specimens.