| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Biodegradable Materials for Medical Applications II
|
| Presentation Title |
In-vitro Corrosion and Mechanical Performance of Mg Alloy WE43 Processed by Spark Plasma Sintering |
| Author(s) |
Julie Soderlind, Subhash Risbud, Joerg Loeffler |
| On-Site Speaker (Planned) |
Julie Soderlind |
| Abstract Scope |
Magnesium alloys are currently investigated for biodegradable implant applications due to their mechanical strength and biocompatibility. Processing by conventional methods (melt casting, extrusion) does not result in the refined microstructure required for controlled corrosion in a biological environment. Spark plasma sintering (SPS) is an attractive alternative processing method offering both densification and microstructure control. This study characterizes the in-vitro corrosion and mechanical performance of gas-atomized WE43 powder, sintered with two different SPS conditions. Samples were sintered at two distinct pressures, heating rates and hold times, with a Ts = 450°C. The resulting microstructures, observed in both SEM and TEM, show differences in the distribution of alloying elements. Both samples were immersed in an NaCl solution for three days and imaged to evaluate the impact of microstructural refinement on corrosion surface morphology. Mechanical performance of each sample was evaluated by simple compression and microhardness testing. Prepared by LLNL under Contract DE-AC52-07NA27344. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |