About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
|
Magnesium Technology 2020
|
Presentation Title |
The Effect of Plastic Deformation on the Precipitation Hardening Behavior of Biodegradable Mg-Sr-Ca-Zn Based Alloys |
Author(s) |
Matteo Nicolasi, Baoqi Guo, Mihriban Pekguleryuz, Mert Celikin, Konstantinos Korgiopoulos |
On-Site Speaker (Planned) |
Konstantinos Korgiopoulos |
Abstract Scope |
In this study the precipitation hardening behaviour of Mg-Sr-Ca-Zn based alloy system with trace additions was investigated. The effect of temperature, composition as well as initial plastic deformation on the precipitation hardening behaviour was analyzed via ageing treatments and in-depth Transmission Electron Microscopy (TEM). The as-cast microstructure of the alloys was found to be composed of interdendritic phases (Mg2(Ca, Sr) or Ca-Sr (Mg)) surrounding the α-Mg matrix. The formation of more thermally stable precipitates, lying along (0001) planes, allowed peak hardness to retain at higher isothermal treatment temperatures. On the other hand, plastically deformed samples exhibited a shift in precipitation kinetics. |
Proceedings Inclusion? |
Planned: |