| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Length-Scale Phenomena in Mechanical Response
|
| Presentation Title |
Mesostructure-Based Model for Failure in Ti-6Al-4V Printed by Laser Powder-Bed Fusion |
| Author(s) |
Kartikey Joshi, Patcharapit Promoppatum, Mark H. Jhon |
| On-Site Speaker (Planned) |
Mark H. Jhon |
| Abstract Scope |
Additively manufactured alloys can exhibit mesoscale process-induced features such as lack-of-fusion defects, where incomplete melting leads to porosity. Although these defects are known to affect the mechanical properties of the printed alloy, the role of the defect distribution is unclear. In this work, we will describe a simulation-based method to systematically explore the effects of the size distribution and spatial distribution of the void structure on failure. We develop a model that explicitly represents the size and position of processing defects as measured from experiment and uses a micromechanics-based ductile damage model to represent failure in the matrix. Analysis of this model using different experimentally realized defect structures allows the identification of relevant metrics for porosity correlating to the measured mechanical properties. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Modeling and Simulation, Mechanical Properties |