RT Journal Article
T1 Crack propagation in TRIP assisted steels modeled by crystal plasticity and cohesive zone method
A1 Dakshinamurthy, Manjunath
A1 Ma, Anxin
AB The influence of transformation induced plasticity (TRIP) on materials mechanical behaviours, as well as failure phenomena including crack propagation and phase boundary debonding in multiphase steels (e.g. dual phase steels, TRIP steels) are studied by using an advanced crystal plasticity finite element method. We have coupled the crystal plasticity model Ma and Hartmaier (2015), which explicitly considers elastic-plastic deformation of ferrite and austenite, austenite-martensite phase, with a cohesive zone model designed for crack propagation, to study the deformations of several representative microstructural volume elements (RVE). Results shows that, the transformation induced plasticity enhances materials strength and ductility, hinders crack propagation and influences interface debonding. Furthermore, the martensitic transformation kinetics in TRIP steels was found depending on the crystallographic orientation and the stress state of a retained austenite grain. The current simulation results helps to investigate and design multiphase steels with improved mechanical properties.
PB Elsevier
SN 0167-8442
YR 2018
FD 2018-08-01
LK https://hdl.handle.net/10016/29522
UL https://hdl.handle.net/10016/29522
LA eng
DS e-Archivo
RD 18 jul. 2024