|About this Abstract
|2020 TMS Annual Meeting & Exhibition
|Advanced High Strength Steels IV
|Crystal Plasticity Finite Element Simulations of the Planar Anisotropy of Q&P Steels
|Deepika Tirumalasetty, Sankaran S, Anand Krishna Kanjarla
|On-Site Speaker (Planned)
The increasing demand for weight reduction and crash safety in the automobile industry has promoted the application of AHSS. The quenched and partitioned(Q&P) steel is of considerable interest due to their exceptional properties with a minimal alloying element. The Q&P steel gains its enhanced strength from the hierarchical microstructure of martensite and improved ductility from transformation induced-plasticity of retained austenite. The hierarchical microstructure of martensite consists of laths, blocks and packets within the parent austenite grains. Despite exhibiting high strength-ductility combination, the formability of the steel is limited. We developed a multiphase and multiscale microstructure model using crystal-plasticity based constitutive relations considering the individual phase properties to study the mechanical behaviour of the steel. Using CP-FEM simulations, we report on the effect of different microstructural features such as volume fraction of the phases, morphology, the ratio of prior grain size to austenite islands and lath thickness on the planar anisotropy.
|Planned: Supplemental Proceedings volume