About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing Materials, Processes and Applications for Energy Industry
|
| Presentation Title |
In-Situ Optimization of Heat Treatment in Additively Manufactured SS316L Using High-Temperature Confocal Laser Microscopy |
| Author(s) |
Santhosh Banoth, Sandhya Verma, Koji Kakehi, Deepoo Kumar, Prita Pant |
| On-Site Speaker (Planned) |
Santhosh Banoth |
| Abstract Scope |
Standard heat treatment often fails to fully homogenize the microstructure of additively manufactured (AM) materials, and manual optimization can be inefficient. In this study, high-temperature confocal scanning laser microscopy (HT-CSLM) was employed as an in-situ tool to optimize heat treatment of SS316L by enabling real-time observation of microstructural evolution with high spatial and temporal resolution. The recrystallization and grain growth behaviors of SS316L produced by 50% cold working (C&W) and selective laser melting (SLM) were compared. Recrystallization in C&W samples began at 700 °C and completed by 850 °C. In contrast, SLM samples remained stable up to 1150 °C due to elemental segregation at cell boundaries. Grain growth occurred at lower temperatures in C&W samples, whereas SLM samples resisted growth until higher temperatures. Post-treatment tensile tests showed that optimized heat treatment eliminated the anisotropy in as-built SLM samples, resulting in isotropic mechanical properties comparable to those of heat-treated C&W SS316L. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Characterization, Mechanical Properties |