| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Surface Engineering II
|
| Presentation Title |
Surface Chemistry and Subsurface Microstructure after Spot-by-spot laser-interference Processing of Al 2024-T3 |
| Author(s) |
Adrian S. Sabau, Harry M. Meyer, Donovan N. Leonard |
| On-Site Speaker (Planned) |
Adrian S. Sabau |
| Abstract Scope |
For adhesive joining and coating applications, non-chemical surface preparation techniques are needed to reduce the environmental impact and associated costs with chemical surface preparation. In this study, a laser-interference technique was employed for surface preparation of Al 2024-T3. The laser-interference power profile was created by splitting the beam and guiding both beams on the same spot, creating a line-interference pattern on the specimen surface. The specimens were laser-structured in the as-received condition with no additional surface preparation steps. The x-ray photoelectron spectroscopy was used to assess the “cleaning” of the surface and the extent of oxide layer regrowth. the scanning electron microscopy STEM was used to characterize the sub-surface microstructure modifications, such as the depth of heat-affected zone and precipitate dissolution. The scanning electron microscopy was used to assess changes in morphology of the Al surface, such as smoothing out of the sharp features in the as received Al sheet. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |