TY - CONF A1 - Rosemann, Paul A1 - Dieck, S. A1 - Kromm, Arne A1 - Halle, T. T1 - Reversed austenite for enhancing ductility of martensitic stainless steel T2 - Tagungsband zum 19. Werkstofftechnischen Kolloquium N2 - The novel heat treatment concept, “quenching and partitioning” (Q&P) has been developed for high strength steels with enhanced formability. This heat treatment involves quenching of austenite to a temperature between martensite start and finish, to receive a several amount of retained austenite. During the subsequent annealing treatment, the so called partitioning, the retained austenite is stabilized due to carbon diffusion, which results in enhanced formability and strength regarding strain induced austenite to martensite transformation. In this study a Q&P heat treatment was applied to a Fe-0.45C-0.65Mn-0.34Si-13.95Cr stainless martensite. Thereby the initial quench end temperature and the partitioning time were varied to characterize their influence on microstructural evolution. The microstructural changes were analysed by dilatometer measurements, X-ray diffraction and scanning electron microscopy, including electron back-scatter diffraction. Compression testing was made to examine the mechanical behaviour. It was found that an increasing partitioning time up to 30 min leads to an enhanced formability without loss in strength due to a higher amount of stabilized retained and reversed austenite as well as precipitation hardening. T2 - 19. Werkstofftechnisches Kolloquium Chemnitz CY - Chemnitz, Germany DA - 16.03.2017 KW - Martensitic stainless steel KW - Reversed austenite PY - 2017 SN - 978-3-00-055705-7 SN - 1439-1597 VL - 61 SP - 308 EP - 315 PB - Schriftreihe Werkstoffe und werkstofftechnische Anwendungen CY - Chemnitz AN - OPUS4-40169 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -