About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Advanced Characterization With Synchrotron, Neutron, and In Situ Laboratory-scale Techniques IV
|
| Presentation Title |
Effect of Scanning Strategies on Residual Stress Mitigation in Laser Powder Bed Fusion |
| Author(s) |
Farshad Samadpour, Ehsan Malikipour, Hazim El-Mounayri |
| On-Site Speaker (Planned) |
Farshad Samadpour |
| Abstract Scope |
This study indicates how different scan strategies affect residual stress in 316L stainless steel parts made by laser powder bed fusion. Parts were printed using five scan patterns: successive, successive chessboard, laser-head index (LHI), tessellation, and graph-assisted melt path (GAMP). A tonal map was developed to illustrate each modified scanning path. Residual stress on the top surface was measured in multiple directions using Proto X-ray diffraction. The results revealed that both the magnitude and orientation of residual stress varied significantly across the strategies. GAMP and tessellation patterns led to more uniform stress distributions. Thermal analysis further showed how the heat flow shaped by each scan strategy directly influences stress development. These results suggest that by adjusting scan patterns, it is possible to better control residual stress through thermal management. This work contributes to process planning strategies aimed at reducing part distortion and improving the reliability of metal additive manufacturing. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Characterization, Other |