About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Biomaterials and Implants
|
| Presentation Title |
A-4: Novel Ultrasonic Melt Shearing Processing for Bioactive Magnesium-Based Metal Matrix Nanocomposites |
| Author(s) |
Andres Larraza, David Jensen, Shane Burke, Sun Latt, Pedram Sotoudehbagha, Mehdi Razavi |
| On-Site Speaker (Planned) |
Andres Larraza |
| Abstract Scope |
Most standard biocompatible metals consist of either titanium or stainless steel. These materials have high mechanical strength and are bioinert, which allows for long-term implantation with low risks of immune response. Implants composed of these alloys do not improve the healing time of bone defects. Novel biomaterials focus on biodegradable and bioactive materials that improve the healing of bone wounds. Previously, we described a magnesium-based metal matrix nanocomposite (MNC) that incorporates scandium and strontium into the matrix for improved bioactivity, as well as a bioactive glass-ceramic. This MNC showed improvements in mechanical and electrochemical behavior. We present a novel metal processing method that incorporates ultrasonic melt stimulation with melt shearing to homogenize the melt while deagglomerating glass ceramics and reduce structural defects by microstructure refinement and degassing via cavitation. We have analyzed the effects of melt processing on microstructure, corrosion, and mechanical behavior of various processed MNCs compared with WE43. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Magnesium, Biomaterials, Composites |