| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Characterization of Minerals, Metals and Materials 2025: In-Situ Characterization Techniques
|
| Presentation Title |
Uncovering Fast Thermal Effects in Metals by In-Situ MEMS Heating in SEM |
| Author(s) |
Christina Koenig, Alice Bastos da Silva, Joerg Jinschek |
| On-Site Speaker (Planned) |
Christina Koenig |
| Abstract Scope |
Heat treatments significantly affect properties of metals during manufacturing and (post-)processing. Controlled heat treatments influence element diffusion, precipitation, phase transformation, recrystallization, and grain morphology. These treatments often occur over short time periods with high temperature gradients, requesting a characterization method that can replicate these conditions in-situ to understand such microstructural evolutions.
This study focuses on using MEMS-based microheaters, capable of heating and cooling rates of up to 1000°C/s and a maximum temperatures of 1100°C. We integrate such MEMS heaters into a scanning electron microscope (SEM) and use imaging and electron backscatter diffraction (EBSD), to monitor microstructural evolutions in-situ in a bulk-like calibration sample. To validate our approach and control over the thermal conditions, in addition to experimental verification, we use also COMSOL simulations to estimate the accuracy of our method.
Using this methodology, we establish insights into the evolutions of the microstructure during cyclic heating of an additive manufacturing process. |
| Proceedings Inclusion? |
Planned: |