| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Magnesium Technology 2023
|
| Presentation Title |
Effect of Deformation Speed on Stress Corrosion and Fracture Toughness of Extruded Mg10Dy and Mg10Dy1Nd using C-ring Tests |
| Author(s) |
Petra Maier, Benjamin Clausius, Norbert Hort |
| On-Site Speaker (Planned) |
Petra Maier |
| Abstract Scope |
The influence of the deformation speed in C-ring tests in Ringer's solution on crack initiation and propagation of extruded Mg10Dy and Mg10Dy1Nd is investigated. Deformation speeds varying from 4 to 0.012 mm/min allow corrosion times from a few minutes to hours. Both the crack initiation force (higher for Mg10Dy1Nd) and displacement (higher for Mg10Dy) increase with decreasing deformation speed up to a corrosion time of 1 hour and then decrease, more for Mg10Dy1Nd and slightly more for the displacement compared to the force at higher corrosion times. The decrease is associated with the higher corrosion times - corrosion pits become visible at a test time of 1 hour on the tensile side. In Mg10Dy1Nd the fracture toughness increases with decreasing deformation speed, no clear picture is seen for Mg10Dy. Sub-cracks often initiate at corrosion pits, which show a correlation to twinned grains at the tensile side – increasing fracture toughness. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Magnesium, Characterization, Biomaterials |