| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Surface Engineering VI
|
| Presentation Title |
Improving the Corrosion and Wear Behaviour of ECAP-processed Biodegradable Mg-Zn-Ca Alloy for Bone Repair Applications |
| Author(s) |
Waleed H. El-Garaihy Nasr, Abdulrahman I. Alateyah, Abdulrahman Alrumayh, Amal BaQais, Majed O. Alawad, Mohamed S. El-Asfoury |
| On-Site Speaker (Planned) |
Waleed H. El-Garaihy Nasr |
| Abstract Scope |
In this work, biodegradable Mg-3Zn-0.4Ca (ZX30) alloy were processed using equal channel angular pressing for up to 4-passes of route Bc. Microstructural evolution and crystallographic texture of the billets were studied using the scanning electron microscope-based electron back scatter diffraction technique. The corrosion behaviour of the alloy was investigated using potentiodynamic polarization and electrochemical impedance spectroscopy, set in a body simulated fluid. Wear tests were conducted for ZX30 billets as functions of load, velocity and distance. The microstructure of the 4-passes samples was dominated by fine equiaxed grains, which indicates that the deformation process was homogeneous and had caused continuous dynamic recrystallization. The average grain size of the 4-pass ZX30 alloy was reduced by 91.6% compared to its as-annealed counterpart. A 93.4% corrosion rate reduction, and a 254% corrosion resistance improvement was achieved in the 4-passes condition. Furthermore, ECAP processing yielded significant improvements in wear behaviour, compared to as-annealed counterpart. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Magnesium, Characterization, |