About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing Keynote Session
|
| Presentation Title |
TMS Young Innovator in the Materials Science of Additive Manufacturing Award: Engineering Microstructures Using Additive Manufacturing Thermomechanical Signature |
| Author(s) |
Nima Haghdadi |
| On-Site Speaker (Planned) |
Nima Haghdadi |
| Abstract Scope |
Additive manufacturing (AM) presents unique opportunities for microstructure engineering in metallic materials. The repeated heating and cooling cycles inherent to AM introduce internal stresses and heat that, if strategically harnessed, allow precise control over microstructural evolution. This presentation explores how exploiting thermal hysteresis during AM can deliberately induce specific defects, metastable phases, and desired interfaces during printing. One example involves generating Ó3 boundaries to engineer grain boundary networks in 316L stainless steel. Another leverages chemical and interfacial instabilities along with the metastable as-built microstructure in 2205 duplex stainless steel to drive ultrafine austenite formation upon phase transformation. These examples highlight how tuning thermal and mechanical inputs during AM can be used to design microstructures in situ. These insights provide a framework for materials design through in-process microstructural control in metallic materials produced by AM, ultimately enabling the production of components with improved mechanical properties and corrosion resistance. |
| Proceedings Inclusion? |
Definite: None Selected |