About this Abstract |
| Meeting |
2027 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Surface Engineering IX
|
| Presentation Title |
Multi-Step Laser Surface Engineering of Functionally Graded Ti-6Al-4V for Enhanced
Strength and Ductility |
| Author(s) |
Zhao Liang, C. Cem Tasan |
| On-Site Speaker (Planned) |
Zhao Liang |
| Abstract Scope |
Surface modification of titanium alloys offers a promising route to improve mechanical performance while preserving the properties of the underlying bulk material. In this work, a multi- step laser surface engineering strategy is developed to introduce controlled microstructural gradients in α + β Ti-6Al-4V. Sequential laser treatments generate a heterogeneous surface region containing refined basketweave structures, α′ martensitic laths, and spatially varying α and β phase morphologies, while the equiaxed bulk microstructure remains largely retained. By adjusting the thermal history during successive processing steps, the transformed surface layer can be refined and redistributed to produce a gradual transition in phase constitution and characteristic length scale through the material thickness. These findings demonstrate that multi-step laser processing can be used as a flexible surface engineering approach for tailoring phase morphology, mechanical gradients, and strength-ductility synergy in titanium alloys. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Surface Modification and Coatings, Additive Manufacturing, Titanium |