About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
In-Situ Monitoring and Control of Solidification & Deformation Processes in Metal Additive Manufacturing
|
| Presentation Title |
Size Effects in Mechanical Properties of LPBF SS316L |
| Author(s) |
Kartikey Sharma, Naga Siva Sai Mouli Tumu, Balila Nagamani Jaya |
| On-Site Speaker (Planned) |
Kartikey Sharma |
| Abstract Scope |
Achieving control over thermal gradient and interface velocity at liquid-solid interface allows to realize fine or coarse grain structure and transition between columnar and equiaxed grains morphology along with variation in melt pool dimensions in additively manufactured (AM) alloys. However, the effect of tailored microstructure as obstacles to dislocation motion at different hierarchically shrinking length scales on mechanical strength and onset of failure is not well understood. In the present study, we investigate the evolution of tensile response and strain partitioning of a wide range of microstructures of laser powder bed fusion processed (LPBF) SS316L at different specimen thicknesses, using in-situ imaging coupled with mechanical tests. The trend in yield strength, ultimate tensile strength and strain to failure are correlated to the different length scales of the additively manufactured microstructure such as melt pool, grain and cell size. Results are explained using advanced microscopy techniques to correlate the same. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Other, Solidification |