| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Magnesium Technology 2020
|
| Presentation Title |
F-47: Influence of Ag Additions on Formability and Strength of a Mg-Zn-Zr Alloy Subjected to Severe Plastic Deformation via Equal Channel Angular Pressing |
| Author(s) |
Matthew W. Vaughan, Bilal Mansoor, Robert Barber, Ibrahim Karaman, Rainer Eifler, H.J. Maier |
| On-Site Speaker (Planned) |
Matthew W. Vaughan |
| Abstract Scope |
Silver (Ag) has been known for millennia to possess antibacterial properties, making it an ideal elemental addition for magnesium-based biomedical implants. As it is expensive, Ag is not typically utilized in large amounts in magnesium alloy design. However, trace additions of Ag have demonstrated favorable effects on strengthening via enhanced precipitation hardening in Mg-6Zn-0.5Zr (ZK60). Also, Ag has been reported to retard dynamic recrystallization in Mg-3Al-1Zn (AZ31), potentially improving alloy formability at low temperatures. Low temperature formability in-turn enables high strength in magnesium alloys, as imposed grain refinement is coupled with minimal grain growth. As severe plastic deformation techniques such as equal channel angular pressing (ECAP) can induce ultra-fine grain sizes, the present work investigates the effects of Ag addition on a Mg-4Zn-0.5Zr (ZK40) alloy’s formability during ECAP. Here, the initial findings indicate that Ag enhances formability during ECAP at low temperatures, in-turn producing high strength in the post-ECAP conditions. |
| Proceedings Inclusion? |
Planned: |