Microstructure Evolution during the Production of Dual Phase and Transformation Induced Plasticity Steels Using Modified Strip Casting Simulated in the Laboratory

Abstract

Instead of conventional steel making and continuous casting followed by hot and cold rolling, strip casting technology modified with the addition of a continuous annealing stage (namely, modified strip casting) is a promising short-route for producing ferrite-martensite dual-phase (DP) and multi-phase transformation-induced plasticity (TRIP) steels. However, at present, the multi-phase steels are not manufactured by the modified strip casting, due to insufficient knowledge about phase transformations occurring during in-line heat treatment. This study analysed the phase transformations, particularly the formation of ferrite, bainite and martensite and the retention of austenite, in one 0.17C-1.52Si-1.61Mn-0.195Cr (wt. %) steel subjected to the modified strip casting simulated in the laboratory. Through the adjustment of temperature and holding time, the characteristic microstructures for DP and TRIP steels have been obtained. The DP steel showed comparable tensile properties with industrial DP 590 and the TRIP steel had a lower strength but a higher ductility than those industrially produced TRIP steels. The strength could be further enhanced by the application of deformation and/or the addition of alloying elements. This study indicates that the modified strip casting technology is a promising new route to produce steels with multi-phase microstructures in the future.

Micromechanical Effect of Martensite Attributes on Forming Limits of Dual-Phase Steels Investigated by Crystal Plasticity-Based Numerical Simulations

“…The heterogeneity affects the micro-scale attributes of materials. Consequently, it influences the component scale's material properties, particularly the material damage behavior [6]. Therefore, it is of the utmost importance to investigate the relationship between the phases' heterogeneity and their microstructural attributes, especially martensite and ferrite fractions and their grain sizes [7].…”

Chemical, electrochemical, thermodynamic and adsorption study of EN8 dual-phase steel with ferrite-martensite structure in 0.5 M H2SO4 using pectin as inhibitor

“…That has driven the specialists to investigate their appropriateness for various structural and constructional purposes (Katiyar et al 2019). Though plenty of research articles were published concerning a generally excellent blend of mechanical properties in DP steels (Karimi et al 2017;Basantia et al 2021;Bilal et al 2019;Fereiduni and Ghasemi Banadkouki 2014;Kumar et al 2019;Shahzad et al 2018;Xiong et al 2019;Zhao et al 2019;Zhu 2019), further examinations are important to discover the impact of phase constituents on the corrosion resistance properties (Bignozzi et al 2020;Gürkan Aydın 2019;Ma et al 2020;Prabhu et al 2020a, b;Zhang et al 2020).…”

Corrosion inhibition of ferrite bainite AISI1040 steel in H2SO4 using biopolymer

“…Although a lot of research articles have come out concerning the excellent blend of mechanical properties in DP steels (A. Karimi, S. Kheirandish, 2017;Basantia et al, 2021;Bilal et al, 2019;Fereiduni & Ghasemi Banadkouki, 2014;Kumar et al, 2019;Shahzad et al, 2018;Xiong et al, 2019;Zhao et al, 2019;Zhu, 2019), further examinations are important to discover the influence of phase constituents on the corrosion resistance properties (Bignozzi et al, 2020;Gürkan Aydın, 2019;Ma et al, 2020;P. R. Prabhu, Prabhu, Sharma et al, 2020;Zhang et al, 2020).…”