| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Length-Scale Phenomena in Mechanical Response
|
| Presentation Title |
Size Effects, Mechanical Properties, and Yield Surface Evolution in Multiaxial Loading of Ti5553, Ti6Al4V alloys |
| Author(s) |
Seyyed Danial Salehi, Mehrdad Pourjam, Thomas Voisin, Kavan Hazeli |
| On-Site Speaker (Planned) |
Seyyed Danial Salehi |
| Abstract Scope |
This study delves into the mechanical properties of laser powder bed fusion (LPBF) fabricated Ti5553 and Ti6Al4V alloys, with a focus on their behavior under varying loading conditions and size effects. We investigate size effects on strength, ductility, and loading modes such as tension, torsion, and multiaxial configurations. We use a methodical experimental approach to measure the yield surface in the tension-torsion space and its evolution for additively manufactured thin walls. This yield surface analysis accounts for the unique microstructural characteristics resulting from specific build direction solidification by examining vertically and diagonally printed samples. Additionally, comprehensive electron backscatter diffraction (EBSD) analysis is conducted on pristine and deformed samples, and fracture surfaces to elucidate the governing deformation and damage mechanisms. The study cross-examines the deformation mechanisms, yield surface evolution, and microstructural and mechanical properties between these two titanium alloys, highlighting their respective advantages and limitations. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Characterization, Mechanical Properties |