|About this Abstract
||2023 TMS Annual Meeting & Exhibition
||High Performance Steels
||Residual stresses near inclusion caused by martensite transformation
||Tom Andersson, Matti Lindroos, Anssi Laukkanen, Tomi Suhonen, Joona Vaara, Tero Frondelius
|On-Site Speaker (Planned)
Fatigue lifetime of metals is often the limiting factor for different machines and components in various applications subjected to cyclic loading. In martensitic steels, a non-metallic inclusion is often found at the crack initiation site. The interplay between the inclusion, surrounding steel, and the interface between them is not fully understood and often the largest inclusion, assumed to be the worst defect, is not found to be the one initiated the crack that caused the final failure.
In this work, we model the formation of residual stresses, caused by the cooling and martensitic transformation near the inclusion using crystal plasticity finite element model. In the model elastic, dislocation driven plastic contribution, thermal, and inelastic deformation related phase transformation are taken into account using small deformation framework. Slip occurring both in parent austenite at elevated temperature and in child martensite at lower temperatures is taken into account.
||ICME, Modeling and Simulation, Iron and Steel