| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Environmentally Assisted Cracking: Theory and Practice
|
| Presentation Title |
Influence of Hydrogen on Mechanical Properties of Pure Titanium Alloys Under Cathodic Polarization in Artificial Seawater: A Local Approach to Fracture |
| Author(s) |
Alexandre Poloni, Abdelali Oudriss, Juan Creus, Egle Conforto, Stéphane Cohendoz, Jamaa Bouhattate, Simon Frappart, Aude Mathis, Thierry Millot, Xavier Feaugas |
| On-Site Speaker (Planned) |
Xavier Feaugas |
| Abstract Scope |
Different kinetics of hydrogen absorption in T40 (grade 2) and TA6V ELI (grade 23) under cathodic polarization in artificial seawater have been highlighted and correlated with the phases expansion and the formation of γ and δ-hydrides. These different steps are time dependant processes which need to be taken into account to improve our knowledge of hydrogen embrittlement in titanium alloys. Mechanical tensile tests have been performed on smooth and several notched samples with and without hydrogen pre-charging. The fracture mode evolution has been studied and the impact of hydrides has been discussed using a local approach to fracture. FEM calculation offers the opportunity to associate the local hydrostatic stress σm and equivalent plastic strain εpeq leading to the fracture and to illustrate an evolution of these conditions with the hydrogen content and hydrides formation. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |