About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
|
Additive Manufacturing Modeling, Simulation and Machine Learning
|
Presentation Title |
Crystal Plasticity Modeling for Prediction of Fatigue Crack Initiation in Defect-containing Additively Manufactured Al-10Si-0.4Mg Alloys |
Author(s) |
Deepali Patil, Anthony G. Spangenberger, Diana A. Lados |
On-Site Speaker (Planned) |
Deepali Patil |
Abstract Scope |
Additive manufacturing enables design flexibility and weight, cost, and energy savings that are desirable for safety-critical components in the transportation sector. However, even with optimized processing parameters, process-induced defects are present that produce lower fatigue lifetimes and design confidence. With no well-established methods to eliminate defects, techniques are needed to predict their effect on fatigue life, and crystal plasticity simulations are proposed as a bridge. This research develops representative volume elements (RVEs) for laser powder bed fusion (LPBF) Al-10Si-0.4Mg having process-specific crystallographic texture and pore morphology. Crystal plasticity simulations are performed in DAMASK and analyzed to calculate fatigue indicator parameters (FIPs) as a surrogate measure of crack initiation life. Subsequent research will investigate the scaling of FIPs between simulated volumes and test coupons/components, and develop correlations with experimentally determined fatigue lifetimes. The viability of the approach and its use as a design tool for process optimization will also be discussed. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, ICME, Other |