TY  - JOUR
AU  - Lin, Mingxuan
AU  - Zimmermann, Carina
AU  - Wang, Kai
AU  - Hunkel, Martin
AU  - Prahl, Ulrich
AU  - Spatschek, Robert
TI  - Modeling Bainitic Transformations during Press Hardening
JO  - Materials
VL  - 14
IS  - 3
SN  - 1996-1944
CY  - Basel
PB  - MDPI
M1  - FZJ-2021-02747
SP  - 654 -
PY  - 2021
AB  - We revisit recent findings on experimental and modeling investigations of bainitic transformations under the influence of external stresses and pre-strain during the press hardening process. Experimentally, the transformation kinetics in 22MnB5 under various tensile stresses are studied both on the macroscopic and microstructural level. In the bainitic microstructure, the variant selection effect is analyzed with an optimized prior-austenite grain reconstruction technique. The resulting observations are expressed phenomenologically using a autocatalytic transformation model, which serves for further scale bridging descriptions of the underlying thermo-chemo-mechanical coupling processes during the bainitic transformation. Using analyses of orientation relationships, thermodynamically consistent and nondiagonal phase field models are developed, which are supported by ab initio generated mechanical parameters. Applications are related to the microstructure evolution on the sheaf, subunit, precipitate and grain boundary level. 
LB  - PUB:(DE-HGF)16
C6  - 33572594
UR  - <Go to ISI:>//WOS:000615397600001
DO  - DOI:10.3390/ma14030654
UR  - https://juser.fz-juelich.de/record/893675
ER  -