| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing Fatigue and Fracture: Developing Predictive Capabilities
|
| Presentation Title |
Mesoscale Modeling of the Additively Manufactured 316L: Effects of Microstructure and Microscale Residual Stresses |
| Author(s) |
Mohammadreza Yaghoobi, Yin Zhang, Krzysztof S. Stopka, David J Rowenhorst, Ting Zhu, John E. Allison, David L. McDowell |
| On-Site Speaker (Planned) |
Mohammadreza Yaghoobi |
| Abstract Scope |
Microstructure and residual stresses play a key role in the response of components produced by Additive Manufacturing (AM). While macroscopic residual stresses are commonly considered in computational models, the effect of micro-residual stress is less well established. The current work investigates the effects of microstructure and micro-residual stresses on the response of AM stainless steel. A crystal plasticity model is developed as an extension of the Armstrong–Frederick cyclic hardening plasticity model which captures the tensorial evolution of backstress induced due to micro-residual stresses. Open source PRISMS-Plasticity and PRISMS-Fatigue software are used to conduct large scale CPFE simulations and fatigue analysis. Reconstructed AM stainless steel microstructures are used to investigate the interaction of micro-residual stresses with the microstructural features on cyclic responses including stress-strain and elastic lattice strain. The effect of micro-residual stresses and microstructure on the microscopic response including the local plastic slip and fatigue driving forces is addressed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, ICME, Other |