| About this Abstract |
| Meeting |
TMS Specialty Congress 2025
|
| Symposium
|
The 7th International Congress on 3D Materials Science (3DMS 2025)
|
| Presentation Title |
Measuring Intragranular Orientation-Strain Fields and Residual Stresses in As-Built Additively Manufactured Stainless Steel Using Scanning 3DXRD |
| Author(s) |
Jerard Gordon |
| On-Site Speaker (Planned) |
Jerard Gordon |
| Abstract Scope |
Although laser-based metal additive manufacturing (LAM) is a disruptive technology enabling near-net shaped part production of metallic materials, its widespread adoption has been largely stymied due the occurrence of process-induced thermal residual stresses. To better understand the incidence of microscale residual stresses within bulk metal LAM materials, we employed novel 3d scanning x-ray diffraction (s3DXRD) to directly measure the full elastic strain tensor and orientation for ~500 grains within a bulk LAM sample. This measured strain data was used to estimate the residual elastic stress tensor components and von Mises stresses within the sample volume using the single crystal elastic constants. Interestingly, von Mises stress distributions appear to follow grain boundary networks and show significant localizations in regions of the microstructure containing fine grains. Overall, these results suggest that residual stress distributions within LAM materials are intimately connected to local solidification behaviors. |
| Proceedings Inclusion? |
Undecided |