TY  - Journal Article
AU  - Arribas, Maribel
AU  - Del Molino, Eider
AU  - Gutiérrez, Teresa
AU  - Arlazarov, Artem
AU  - Martin, David
AU  - De Caro, Daniele
AU  - Ayenampudi, Sudhindra
AU  - Santofimia, Maria J.
TI  - Characterization of a Medium Mn-Ni Steel Q&P Treated by a High Partitioning Temperature Cycle
PY  - 2022
PB  - Multidisciplinary Digital Publishing Institute (MDPI)
AB  - In this work, a medium Mn-Ni steel was treated through Quenching and Partitioning (Q&P) with a partitioning temperature (PT) of 650 °C, which corresponded to the start of the austenite reverse transformation (ART) phenomenon. The influence of the quenching temperature (QT) and partitioning time (Pt) on austenite stabilization and mechanical properties was investigated. A strong influence of the quenching temperature was observed. Results were compared with those obtained after a Q&P treatment with 400 °C partitioning temperature. The Q&P cycle with quenching to room temperature and a high partitioning temperature produced a steel with a high retained austenite (RA) volume fraction and exceptional strength–ductility balance. The analysis of the mechanical stability of the retained austenite revealed a significant stress-induced transformation. Nevertheless, the austenite, which was stable at stresses above the yield stress, provided significant TRIP-assisted ductility. Bending, hole expansion and post-stamping properties were also evaluated for the most promising conditions.
UR  - http://hdl.handle.net/11556/1313
DX  - 10.3390/met12030483
ER  -