Print Email Facebook Twitter Topological aspects responsible for recrystallization evolution in an IF-steel sheet – Investigation with cellular-automaton simulations Title Topological aspects responsible for recrystallization evolution in an IF-steel sheet – Investigation with cellular-automaton simulations Author Traka, K. (TU Delft Team Jilt Sietsma; Max-Planck-Institut für Eisenforschung) Sedighiani, K. (TU Delft Team Jilt Sietsma; Max-Planck-Institut für Eisenforschung) Bos, C. (TU Delft Team Jilt Sietsma; Tata Steel) Galan Lopez, J. (TU Delft Team Erik Offerman) Angenendt, Katja (Max-Planck-Institut für Eisenforschung) Raabe, Dierk (Max-Planck-Institut für Eisenforschung) Sietsma, J. (TU Delft Team Jilt Sietsma) Date 2021 Abstract A cellular automaton algorithm for curvature-driven coarsening is applied to a cold-rolled interstitial-free steel's microstructure - obtained through electron backscatter diffraction (EBSD). Recrystallization nucleation occurs naturally during the simulation, due to the highly heterogeneous and hence competitive growth among pre-existing (sub) grains. The spatial inhomogeneity of the subgrain growth that takes place derives from the large local variations of subgrain sizes and misorientations that comprise the prior deformed state. The results show that capillary-driven selective growth takes place to the extent that the prior elongated and deformed grains are replaced by equiaxed grains with no interior small-angle boundaries. Additionally, during the simulation certain texture components intensify and others vanish, which indicates that preferential growth occurs in a fashion that relates to the crystal orientations’ topology. The study of the early stages of recrystallization (i.e. nucleation) shows that the pre-existing subgrains that eventually recrystallize, exhibit certain topological characteristics at the prior deformed state. Successful nucleation occurs mostly for pre-existing matrix subgrains abutting shear bands or narrow deformation bands and particularly at regions where the latter intersect. Subject Abnormal subgrain growthCellular-AutomatonIF-steelRecrystallizationShear band nucleation To reference this document use: http://resolver.tudelft.nl/uuid:9e212624-7e61-4b10-8797-4ceb8555d3c5 DOI https://doi.org/10.1016/j.commatsci.2021.110643 ISSN 0927-0256 Source Computational Materials Science, 198 Part of collection Institutional Repository Document type journal article Rights © 2021 K. Traka, K. Sedighiani, C. Bos, J. Galan Lopez, Katja Angenendt, Dierk Raabe, J. Sietsma Files PDF 1_s2.0_S0927025621003700_main.pdf 9.8 MB Close viewer /islandora/object/uuid:9e212624-7e61-4b10-8797-4ceb8555d3c5/datastream/OBJ/view