Characterization of a Medium Mn-Ni Steel Q&P Treated by a High Partitioning Temperature Cycle

In this work, a medium Mn-Ni steel was treated through Quenching and Partitioning (Q&P) with partitioning temperature (PT) of 650 °C, which corresponded to the start austenite reverse transformation (ART) phenomenon. The influence quenching (QT) time (Pt) on stabilization mechanical properties investigated. A strong observed. Results were compared those obtained after Q&P treatment 400 °C temperature. cycle room high produced retained (RA) volume fraction exceptional strength–ductility balance. analysis stability revealed significant stress-induced transformation. Nevertheless, austenite, stable at stresses above yield stress, provided TRIP-assisted ductility. Bending, hole expansion post-stamping also evaluated for most promising conditions.