| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Magnesium Technology 2025
|
| Presentation Title |
Effect of subsequent heat treatment on microstructure, hardness and corrosion behavior of extruded and swaged Mg0.15Ca |
| Author(s) |
Petra Maier, Benjamin Clausius, Thea-Simone Tegtmeier, Jeremy Schaffer, Adam Griebel |
| On-Site Speaker (Planned) |
Petra Maier |
| Abstract Scope |
In this preliminary study, the influence of a subsequent heat treatment after extrusion and swaging on the microstructure, hardness and corrosion behavior of Mg0.15Ca was investigated. Heat treatment was carried out at 300 °C, 400 °C and 500 °C for 1 h, and 16 h at 500 °C. Immersion in HBSS and Ringer's solution was done up to 7 days. With increasing heat treatment temperature and time, the grain size increases, the hardness decreases and the corrosion rate increases. Swaged Mg0.15Ca corroded stronger in Ringer's solution - however, more uniform and still with low corrosion rates, which are known from Mg0.15Ca. Corrosion in HBSS led to pitting, which was more pronounced at high annealing temperatures. An influence of residual surface stresses from swaging is expected. Heat treatment at 300 °C shows the highest susceptibility to pitting corrosion. The coarse-grained microstructure shows signs of intergranular corrosion as well as transgranular fracture. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Biomaterials, Characterization, Magnesium |