| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Solidification in External Fields
|
| Presentation Title |
The Effects of External Magnetic Field on Keyhole Behavior in Laser Spot Welding of 316L SS Using In-situ X-ray Imaging |
| Author(s) |
Aslan Bafahm Alamdari, Marwan Haddad, Alex Thomas, Samuel Clark, Kamel Fezzaa, Sarah Wolff |
| On-Site Speaker (Planned) |
Aslan Bafahm Alamdari |
| Abstract Scope |
Keyhole behavior in laser melting processes is of crucial importance in determining the quality of the weld. However, more studies are required on the effects of external magnetic fields on keyhole behavior. For this purpose, three sets of laser spot weld experiments on 316L stainless steel substrates were performed using two magnetic field configurations: one aligned along the laser beam, the other perpendicular to the laser and substrate directions, alongside a control group with no magnetic fields. Real-time monitoring was achieved through high-speed in situ synchrotron X-ray imaging at 40,000 fps to analyze keyhole morphology and dynamics. The results reveal that a magnetic field strength of 760 mT normal to the laser direction effectively reduced keyhole depth. These findings contribute to a better understanding of the effects of external magnetic fields on the laser melting process to improve part qualities. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Phase Transformations, |