Prediction of hot deformation behaviour of Fe–25Mn–3Si–3Al TWIP steel

Li, Dejun; Feng, Yaorong; Yin, Zhixiang; Shangguan, Fengshou; Wang, Ke; Liu, Qiang; Hu, Feng

doi:10.1016/j.msea.2011.07.073

Cited by 51 publications

(22 citation statements)

References 16 publications

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“…Compared to the reported values for hot deformation of high-Mn steels such as 387.84 kJ/mol in Fe-20Mn-3Si-3Al [38] and 439 kJ/mol in Fe-23Mn-0.6C [39], the obtained values are significantly lower. This difference in activation energy has been suggested to relate to the high solute content present in high-Mn steel [40]. The obtained values of Q are close to those reported austenitic stainless steels with range of 350-510 kJ/mol [37].…”

Section: Constitutive Modeling Flow Curvessupporting

confidence: 83%

Hot Deformation Behavior and Processing Maps of a Medium Manganese TRIP Steel

Yan

Huang

et al. 2018

Acta Metall. Sin. (Engl. Lett.)

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The hot deformation behavior of a medium-Mn steel was studied in terms of hot compression flow curves in the temperature range of 850-1050°C and strain rates of 0.05-10 s-1. The thermo-mechanical analysis was carried out and suggested that the microstructure during deformation was completely austenite which had high tendency for dynamic recrystallization (DRX). The flow behavior was characterized by significant flow softening at deformation temperatures of 950-1050°C and lower strain rates of 0.05-5 s-1 , which was attributed to heating during deformation, DRX and flow instability. A step-by-step calculating procedure for constitutive equations is proposed. The verification of the modified equations indicated that the developed constitutive models could accurately describe the flow softening behavior of studied steel. Additionally, according to the processing maps and microstructure analysis, it suggested that hot working of medium-Mn steel should be carried out at 1050°C, and the strain rate of 0.05-10 s-1 resulted in significantly recrystallized microstructures in the in steel. The flow localization is mainly flow instability mechanism for experimental steel.

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Section: Constitutive Modeling Flow Curvessupporting

confidence: 83%

Hot Deformation Behavior and Processing Maps of a Medium Manganese TRIP Steel

Yan

Huang

et al. 2018

Acta Metall. Sin. (Engl. Lett.)

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“…It was generally considered as the features of the early DRX stage. 28 With increasing the deformation temperature, a large number of new DRX grains were nucleated at the original grain boundaries in Fig. 9(c).…”

Section: Microstructure Evolutionmentioning

confidence: 92%

Dynamic recrystallization model of the Cu–Cr–Zr–Ag alloy under hot deformation

et al. 2016

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“…3(b). The calculated values of Q HW by the method based on fitting a hyperbolic sine function to the peak stress, as first proposed Sellars and McTegart [30], and later used by Mirzadeh et al, [31,32] in austenitic stainless steels, and Li et al, [33,34] for TWIP steels were 366 kJ/ mol (TW-NM), 434 kJ/mol (TW-Nb), 446 kJ/mol (TW-V) and 425 kJ/mol (TW-Ti). As can be seen from Fig.…”

Section: Effect Of Microalloying Elements On the Hot Flow Behaviormentioning

confidence: 99%