About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Magnesium Technology 2026
|
| Presentation Title |
Additive Manufacturing of AZ31 Magnesium Alloy via powder bed friction stir (PBFS): Microstructural and Mechanical Analysis |
| Author(s) |
Prabhakar Kr. Singh, Probir Saha |
| On-Site Speaker (Planned) |
Prabhakar Kr. Singh |
| Abstract Scope |
Powder-based material development provides a cost-effective and efficient pathway for fabricating lightweight alloys like magnesium, particularly suited for biomedical applications. In this study, a novel adaptation of the Powder Bed Fusion with Solid-State (PBFS) additive manufacturing process was used to fabricate AZ31B magnesium alloy from its powder bed. The process, conducted layer-by-layer within a heat-resistant mould, achieved refined microstructure, reduced porosity, and improved corrosion resistance. Unlike conventional solid-state AM, PBFS offers superior thermal control and localized processing, effectively suppressing oxidation during deposition.
A 10 mm-thick AZ31B deposit was successfully fabricated, exhibiting a significant improvement in mechanical and corrosion performance. Electrochemical and immersion tests in simulated body fluid (SBF) revealed a 61% increase in corrosion resistance compared to hot-rolled AZ31B, attributed to friction-stir-induced grain and secondary particle refinement. The fabricated deposit also achieved a UTS of 245 MPa and hardness of 88 Hv, underscoring PBFS as a promising route for Mg-based biomedical implants. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Magnesium, Powder Materials |