Recent developments and perspectives of advanced high-strength medium Mn steel: from material design to failure mechanisms

Abstract Advanced high-strength steels are key structural materials for the development of next-generation energy-efficient and environmentally friendly vehicles. Medium Mn steel, as one latest generation advanced steels, has attracted tremendous attentions over past decade due to its excellent mechanical properties. Here, state-of-the-art developments medium steel systematically reviewed with focus on following crucial aspects: (a) alloy design strategies; (b) thermomechanical processing routes optimizations microstructure properties; (c) fracture mechanisms toughening (d) hydrogen embrittlement improvement strategies.