| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Magnesium Technology 2023
|
| Presentation Title |
In Situ Study of the Degradation Behaviour Under Load of Mg1.8Y0.6Zn(1Ag) Using Synchrotron Tomography |
| Author(s) |
Domonkos Tolnai, Birte Hindenlang, Jan Bohlen, Joao Pereira da Silva, Jianan Gu, Anais Louapre, Florian Wieland, Fabian Wilde |
| On-Site Speaker (Planned) |
Domonkos Tolnai |
| Abstract Scope |
The addition of Y and Zn improves the property profile of Mg by forming a Long Period Stacking Ordered (LPSO) phase. The addition of Gd, Ca or Ag can further improve the degradation- and mechanical-properties. Owing to their biocompatibility and degradation under physiological conditions, these alloys are considered for temporary implants. Mg1.8Y0.6Zn in pure condition and modified with 1.6 wt.% of Gd, 1 wt.% of Ag or 0.4 wt.% of Ca, were extruded and subjected to in situ tensile testing in air and submerged in simulated body fluid. At selected load intervals, synchrotron tomography was performed in order to follow the crack initiation and propagation in 3D. The results show the effect of corrosive media on the mechanical failure. Furthermore, the results are used to develop a computational model on stress corrosion cracking that can be applied in failure prediction of implants and designing alloys for structural and medical applications. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Magnesium, Biomaterials |