| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Length-Scale Phenomena in Mechanical Response
|
| Presentation Title |
Exploring Complex Microstructures in Additively Manufactured Alloys with Micro Mechanical Testing |
| Author(s) |
Subin Lee, Nagamani Jaya Balila, Pyuck-Pa Choi, Christoph Kirchlechner |
| On-Site Speaker (Planned) |
Subin Lee |
| Abstract Scope |
Additively manufactured alloys exhibit complicated microstructures across multiple length scales, including dislocation cell structures and local segregation induced by intense heat treatment during fabrication. These complexities pose significant challenges in characterizing and optimizing their mechanical properties. Furthermore, the inhomogeneous distribution of such microstructural features implies significant fluctuations in mechanical properties.
In this presentation, we focus on the applications of micromechanical testing to additively manufactured alloys, particularly precipitation hardening stainless steel and austenitic steels. Our objective is to comprehensively understand their mechanical responses and its heterogeneities based on local properties. By employing advanced in situ mechanical testing techniques including micro-pillar compression and nanoindentation, we systematically analyze local mechanical properties of highly heterogeneous microstructures at the nano- and microscales. Our findings are expected to provide valuable insights for optimizing additive manufacturing processes and enhancing material performance. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Mechanical Properties, Additive Manufacturing |