Modelling the Static Recrystallization Kinetics of Microalloyed TWIP Steels with Different Alloying Contents

L. Llanos; Beatriz Pereda; B. López; J.M. Rodriguez-Ibabe

doi:10.4028/www.scientific.net/MSF.879.1465

Paper Titles

Fundamental Aspects of Rolled Zn Alloy Sheet Formability: Structure-Property and Failure Mode Relationships
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Effect of Aluminum Content on Texture Formation Behaviors in Magnesium Alloy
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Modeling and Simulation of Q&P Steels
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Experimental Investigation of Welding Parameters on Automatic TIG Welding of Aluminium 5083 Plate
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Modelling the Static Recrystallization Kinetics of Microalloyed TWIP Steels with Different Alloying Contents
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Influence of Initial Heat Treatment on the Microhardness Evolution of an Al-Mg-Sc Alloy Processed by High-Pressure Torsion
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Influence of Second Phases on the Superplasticity of Mg-Tm-Y-CeMM Alloys Containing LPSO-Phases
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The Effect of High-Doze Neutron Irradiation on Texture and Substructure Condition of Cladding Tubes from Zr-Based Alloys
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Effect of High Temperature Exposure on the Mechanical Properties of Self-Hardening Al-Based Alloy
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HomeMaterials Science ForumMaterials Science Forum Vol. 879Modelling the Static Recrystallization Kinetics of...

Modelling the Static Recrystallization Kinetics of Microalloyed TWIP Steels with Different Alloying Contents

Abstract:

During hot rolling, austenite recrystallization determines the grain size evolution and the extent of strain accumulation, and therefore, it can be used to tailor the microstructure and mechanical properties of the final product. However, at the moment, models describing the recrystallization kinetics of high-Mn steels are scarce and they do not take into account the effect of the alloying elements present in these steels. The aim of this work is to provide a quantitative model for the determination of the static recrystallization kinetics valid for a wide range of high-Mn steel compositions. Softening data determined for steels with different Mn (20 to 30%), Al (0 to 1.5%) and C (0.2 to 1%) levels at different strain, strain-rate and temperature conditions were analyzed. Static recrystallization of the investigated high-Mn steels follow Avrami’s law, with n Avrami exponents which are temperature dependent and lower than those determined for low C steels. A dependence of the t0.5 (time for 50% fractional softening) on the carbon content has been also observed and it was incorporated into an equation for the calculation of this parameter.