| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Environmental Degradation of Multiple Principal Component Materials
|
| Presentation Title |
Utilizing Small Punch Test (SPT) for Mechanical Behaviour Study of Electrochemically and Gaseous Hydrogenated Electron Beam Melting (EBM) and Wrought Ti–6Al–4V |
| Author(s) |
Noa Bitton, Nissim U Navi, Eyal Sabatani, Brian A Rosen, Shlomo Haroush, Natalie Kostirya, Gennadi Agronov, Yizhaq Eretz-Kedosha, Eitan Tiferet, Noam Eliaz |
| On-Site Speaker (Planned) |
Nissim U Navi, Noam Eliaz |
| Abstract Scope |
The mechanical behavior of electrochemically and gaseous hydrogen charged wrought and EBM Ti-6Al-4V alloys was studied. The electrochemically charged alloys exhibited a surface layer that was composed of αH and βH solid solutions, and a combination of δa and δb hydrides. Lamellar Widmanstätten microstructure of the EBM alloy, with higher density of α/β interphase boundaries compared to the wrought alloy, promoted short-circuit paths for hydrogen diffusion into the bulk, resulting in gradual degradation in the mechanical behaviour over charging time. After gaseous charging, αH and βH solid solutions were formed in both alloys, showing similar phase content and mechanical property changes at all hydrogen contents. Relatively high strength and ductility were observed below the βH saturation concentration, while above it – the mechanical properties degraded due to hydride formation. It is shown that EBM Ti–6Al–4V is more prone to hydrogen embrittlement compared to the wrought alloy when EC is used. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Titanium, Other |