About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Magnesium Technology 2026
|
| Presentation Title |
Corrosion evolution of extruded Mg-alloys WE43, Mg10Gd, ZX10 in HBSS: linking residual strength to corrosion morphology |
| Author(s) |
Agathi Dimakopoulou, Jan Bohlen, Petra Maier |
| On-Site Speaker (Planned) |
Petra Maier |
| Abstract Scope |
The corrosion behavior and residual tensile strength of extruded Mg-alloys (WE43, Mg10Gd, ZX10) were investigated by immersion in HBSS at 37°C over varying durations. Cylindrical samples were evaluated via weight loss, while corroded tensile specimens underwent µCT-analyses before and after mechanical testing to correlate fracture behavior with corrosion morphology. Additionally, DIC was applied to determine the true-stress distribution. Mg10Gd exhibits a slightly higher strength compared to WE43 and ZX10. Despite comparable initial strengths, ZX10 maintained superior residual strength over time. Pitting corrosion has been mainly found in Mg10Gd and WE43. Its correlation to crack initiation is discussed. µCT-analyses revealed that fractures occurred variably, either at the smallest cross-section, at isolated deep pits or in other critical pit accumulations. These findings support a better understanding of critical regions of non-uniform corroded Mg-alloys, and show that the corrosion time and with this its extent is influencing the fracture mechanism and strength loss. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Biomaterials, Magnesium, Mechanical Properties |