http://repository.iitr.ac.in/handle/123456789/23821| Title: | Predictive integrated numerical approach for modeling spatio-temporal microstructure evolutions and grain size dependent phase transformations in steels |
| Authors: | Chen S.-F. Bandyopadhyay K. Basak, Shamik Hwang B. Shim J.-H. Lee J. Lee M.-G. |
| Published in: | International Journal of Plasticity |
| Abstract: | A computational modeling for predicting microstructure evolutions and mechanical properties of steels under thermo-mechanical-metallurgical process is established, for the first time, by integrating the finite element (FE) simulation, cellular automaton simulation (CA), and phase transformation kinetics. In this microstructural-integrated modeling, various recrystallization processes, such as dynamic recrystallization (DRX), meta-DRX, and static recrystallization (SRX), are formulated based on dislocation density based constitutive laws. With microstructure information provided by the CA modeling, the austenite grain size (AGS)-dependent phase kinetics in the form of continuous cooling transformation (CCT) diagram is applied for addressing the effect of AGS on transformations under various cooling conditions. The integrated numerical approach implemented in the FE software via user defined subroutines can simulate the morphology and size distribution of constituent grains, transformed fractions of various phases, hardness profiles and flow stresses after thermo-mechanical process with large plastic deformation. As a validation of the integrated modeling, the multiple oval-round pass hot rolling and subsequent cooling process are simulated for the seismic reinforcing steel bar and the predicted microstructure and mechanical properties are compared to those of experimental data. © 2021 Elsevier Ltd. |
| Citation: | International Journal of Plasticity, 139 |
| URI: | https://doi.org/10.1016/j.ijplas.2021.102952 http://repository.iitr.ac.in/handle/123456789/23821 |
| Issue Date: | 2021 |
| Publisher: | Elsevier Ltd |
| Keywords: | Cellular automaton Finite element method Integrated modeling Microstructure evolution Phase transformations |
| ISSN: | 7496419 |
| Author Scopus IDs: | 57196256990 7005553771 56489932500 7201454023 7201856317 55689948000 26323686000 |
| Author Affiliations: | Chen, S.-F., Department of Materials Science and Engineering, RIAM, Seoul National University, Seoul, 08826, South Korea, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, China Bandyopadhyay, K., Department of Mechanical Engineering, IIT Bhilai, Raipur, 492015, India Basak, S., Department of Materials Science and Engineering, RIAM, Seoul National University, Seoul, 08826, South Korea Hwang, B., Department of Materials Science and Engineering, Seoul National University of Science and Technology, Seoul, 01811, South Korea Shim, J.-H., Center for Energy Materials Research, Korea Institute of Science and Technology, Seoul, 02792, South Korea Lee, J., Department of Materials Science and Engineering, Korea University, Seoul, 02841, South Korea Lee, M.-G., Department of Materials Science and Engineering, RIAM, Seoul National University, Seoul, 08826, South Korea |
| Funding Details: | This work was supported by the Technology Innovation Program (Grant No. 10063488 ) funded by the Ministry of Trade, Industry and Energy (MOTIE). S.F.C. and M.G.L. appreciate the supports from KIAT (Project No. N0002598) and NRF of Korea (ERC Grant No. 2019R1A5A6099595 ). During his stay at Korea Dr. Bandyopadhyay was supported by KU grant. European Research Council, ERC: 2019R1A5A6099595; Konkuk University, KU; Ministry of Trade, Industry and Energy, MOTIE; Korea Institute for Advancement of Technology, KIAT: N0002598; National Research Foundation of Korea, NRF |
| Corresponding Author: | Lee, M.-G.; Department of Materials Science and Engineering, South Korea; email: myounglee@snu.ac.kr Lee, J.; Department of Materials Science and Engineering, South Korea; email: joonholee@korea.ac.kr |
| Appears in Collections: | Journal Publications [ME] |
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