Effect of ausforming on the microstructure and transformation kinetics of a medium carbon carbide-free bainitic steel by Muftah ZORGANI MANUSCRIPT-BASED THESIS PRESENTED TO ÉCOLE DE TECHNOLOGIE SUPÉRIEURE IN PARTIAL FULFILLMENT FOR THE DEGREE OF DOCTOR OF PHILOSOPHY Ph.D. MONTREAL, 17 NOVEMBER 2021 ÉCOLE DE TECHNOLOGIE SUPÉRIEURE UNIVERSITÉ DU QUÉBEC Muftah. Zorgani, 2021