| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Titanium Technology
|
| Presentation Title |
Microstructure Evolution during Laser Shock Peening in Titanium |
| Author(s) |
Uthman Mahmud, Yijun Liu, David Gilbert, Yu-Lung Chiu, Ian Jones |
| On-Site Speaker (Planned) |
Uthman Mahmud |
| Abstract Scope |
Laser shock peening is an effective surface treatment process for improved mechanical performance. In this work, the evolution of the shock peened microstructure in a commercially pure titanium was studied with increasing numbers of shocks from 3 to 15. Complex dislocation structures including cellular structures were observed close to the shock peened surface. Dislocations with B=1/3<112 ̅0> have been observed as far as 0.75 mm under the shocked surface after 15 shock samples. While different deformation twins were observed, {112 ̅1} twin is the most commonly encountered. Although the twin density close to the surface does not exhibit significant variation, the number of deformation twins increases with the number of shocks. The deformation twins observed will be discussed in light of the crystal orientation. As expected, the volume of materials subjected to the shock-induced plastic deformation increases with the shock number. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Titanium, Characterization, |