On the Prediction of Stacking Fault Energy on Medium MN Steels
Hamza Essoussi, Saïd Ettaqi, E. Essadiqi
Abstract
Stacking fault energy estimation is considered as an important stage in the process of designing advanced high-strength steels. Therefore, in the present study, the thermochemical model of Olsen and Cohen was employed to calculate the stacking fault energy (SFE) in Fe–C–Mn–Al–Si steels with <0.6 wt % C, manganese 3–10 wt %, aluminum 0.5–3 wt % and silicon 0.5–3 wt %. The calculation findings revealed that besides the importance of high Mn, the addition of Al and Si leads to SFE values in the range of 20–40 mJ/m2 that allows the activation of twinning induced plasticity (TWIP) and/or transformation induced plasticity (TRIP) effects.
Topics & Concepts
TwipStacking-fault energyMaterials scienceManganesePlasticityCrystal twinningStackingMetallurgyAluminiumFault (geology)Stacking faultSiliconDislocationChemistryComposite materialAlloyGeologyMicrostructureSeismologyOrganic chemistryMicrostructure and Mechanical Properties of SteelsMagnetic Properties and ApplicationsMetal Alloys Wear and Properties