| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
2023 Technical Division Student Poster Contest
|
| Presentation Title |
SPG-34: Multi-scale In Situ Studies of Deformation Mechanism of L-PBF 316L Stainless Steels |
| Author(s) |
Wanxuan Teng, Biao Cai, Moataz M. Attallah |
| On-Site Speaker (Planned) |
Wanxuan Teng |
| Abstract Scope |
In situ synchrotron x-ray diffraction and tomography were used to study deformation mechanisms of 316L stainless steels produced by laser powder bed fusion (LPBF). We identified the formation of corrugated surface in LPBF 316L stainless steel during tensile testing via in situ tomography, confirmed by ex situ optical imaging and surface roughness measurement. The formation of corrugated surface might be attributed to the grain structure formed from the LPBF process. The porosity was found to become elongated during loading, leading to the failure of the specimen. The findings show further potential for optimization of mechanical performance of additive manufactured alloys through adjusting the microstructure. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
Additive Manufacturing, Characterization, Mechanical Properties |