| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Magnesium Technology 2023
|
| Presentation Title |
Influence of Corrosion Extent on Residual Tensile Strength and Corrosion Fatigue Properties of an Mg-Y-Nd Alloy Characterized by µCT |
| Author(s) |
Benjamin Clausius, Nils Wegner, Sharmajeya Jeyavalan, Hendrik Hartweg, Frank Walther, Petra Maier |
| On-Site Speaker (Planned) |
Petra Maier |
| Abstract Scope |
This study focuses on the influence of inhomogeneous corrosion on the quasi-static and cyclic properties of an Mg-Y-Nd alloy. Uniform corrosion is essential for biodegradable im-plant materials to avoid notching effects and premature failure. Previous studies on extruded Mg-3Y-3RE have shown a tendency to pitting in Ringer’s solution at 37 °C. Tensile tests on pre-corroded samples with different corrosion extents, adjusted by corrosion time, allow the correlation to residual tensile strength. Corrosion fatigue tests enable determination of the influence of the pitting factor on service life and monitoring of the evolution of pits through electrochemical parameters. µCT scanning of corroded samples before and after the tests allows identifying the weak spots. Through 3D-µCT analysis, it was possible to quantify the corrosion extent and thus conclude that the amount and size of corrosion pits is critical for shorter corrosion times, whereas the residual load-bearing area is critical for longer corrosion times. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Magnesium, Mechanical Properties |