| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Transformations and Microstructural Evolution
|
| Presentation Title |
Leveraging Plastic Deformation to Optimize Solute Clustering and Intermetallic Nucleation in Magnesium Alloys for Biodegradable Implant Applications |
| Author(s) |
Sreenivas Raguraman, Zehao Li, Suhas Eswarappa Prameela, Vicente Munizaga, Taisuke Sasaki, Adam Griebel, Michael Falk, Timothy Weihs |
| On-Site Speaker (Planned) |
Timothy Weihs |
| Abstract Scope |
In the last decade, researchers have focused on developing biodegradable metallic implants such as nails, screws, stents, and sutures. Magnesium alloys have emerged as a promising choice due to their biodegradability, biocompatibility, and impressive mechanical properties. However, the adoption of magnesium alloys has been limited due to their high corrosion rate and subpar fatigue properties. Unlike Al-alloys, achieving effective precipitate strengthening in Mg-alloys can be difficult. The existing density and size of precipitates often pose little resistance to plastic deformation and can accelerate corrosion. In light of these challenges, the current study focuses on improving the strength and biocorrosion of Mg alloys by investigating the use of plastic deformation and its associated defects (vacancies and dislocations) to enhance solute clustering and intermetallic nucleation in Mg-6Zn, Mg-9Al, and ZX10 alloys. We leverage both characterization techniques and computational tools to understand the link between defects, solid-state transformations (clustering, precipitation), and properties. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Magnesium, Phase Transformations, Characterization |