TY  - CHAP
AU  - Strobl, Rachel
AU  - Budnitzki, Michael
AU  - Sandfeld, Stefan
A3  - Biermann, Horst
A3  - Aneziris, Christos G.
TI  - Properties of Phase Microstructures and Their Interaction with Dislocations in the Context of TRIP Steel Systems
VL  - 298
CY  - Cham
PB  - Springer International Publishing
M1  - FZJ-2023-00984
SN  - 78-3-030-42603-3
T2  - Springer Series in Materials Science
SP  - 771 - 792
PY  - 2020
AB  - Transformation Induced Plasticity (TRIP) steels undergo a diffusionless phase transformation from austenite to martensite, resulting in a material exhibiting desireable material properties such as exceptional balance of strength and ductility as well as good fatigue behavior. Computational modeling at the mesoscale is potentially a suitable tool for studying how plastic deformation interacts with phase transformations and ultimately affects the bulk properties of these steels. We introduce models that represent the phase microstructure in a continuum approach and couple a time-dependent Ginzburg-Landau equation with discrete dislocation via their elastic strain energy densities. With this, the influence of several dislocation configurations are examined, namely a single dislocation, a “penny-shaped crack”, and a “dislocation cascade”. It is shown that the strain due to the presence of dislocations has a significant influence on the resultant martensitic microstructure. Furthermore, the importance of using a non-local elasticity approach for the dislocation stress fields is demonstrated.
LB  - PUB:(DE-HGF)7
DO  - DOI:10.1007/978-3-030-42603-3_23
UR  - https://juser.fz-juelich.de/record/943390
ER  -