|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Advanced High-strength Steels
||Development, Characterization and Mechanical Property Evaluation of a Medium Mn High Si Multicomponent Steel for Automotive Applications
||Nicky Kisku, Sumantra Mandal, K.K Ray
|On-Site Speaker (Planned)
The present study deals with the design and development of an ultra-high strength steel by utilizing the compositional effect, thermo-mechanical processing, transformation induced plasticity (TRIP) effect and precipitation strengthening. A medium manganese, high silicon multicomponent steel was casted in a vacuum induction furnace and subjected to hot forging at 1373K followed by hot rolling at 1173K. Microstructural characterization and evaluation of mechanical properties were carried out in various processing conditions. The volume fraction of strain induced martensite found to increase drastically from 6% in forged condition to 24% after hot rolling. Furthermore, a ~96% strain induced martensite after tensile testing was observed which clearly reflects the predominant TRIP effect in this steel. Due to this, an unique combination of ultra-high tensile strength (~1700 MPa), yield strength (~900 MPa) and moderate elongation (~12%) was achieved which is desirable for automotive applications.
||Planned: Supplemental Proceedings volume