| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Magnesium Technology 2024
|
| Presentation Title |
Different Analytical Methods to Determine the Influence of Pitting on the Residual Performance of Mg Alloys as Implant Materials |
| Author(s) |
Petra Maier |
| On-Site Speaker (Planned) |
Petra Maier |
| Abstract Scope |
Mg-alloys are prone to pitting due to their non-uniform protective corrosion layers, which can lead to an increase in stress intensity based on the notch effect, pit-to-crack transition and thus premature failure. A small set of analytical methods to determine the extent of pitting and its effect on the resulting residual strength is presented. Micrographs, 3D-microscopy or 3D-analysis using CT are used to determine the amount and geometry of pitting - each with advantages and disadvantages. The influence of the corrosion pits on the mechanical properties is tested by static, quasi-static and cyclic test methods: by tensile, flexural or fatigue testing - either after corrosion or overlapping. Knowledge about the critical pit is of general interest. Stress corrosion is discussed by applying static tests like C-ring testing, which also plays a role in slow strain rate tensile tests and stress corrosion cracking is more or less influenced by corrosion pits. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Biomaterials, Magnesium, Mechanical Properties |