| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Ultrafine-grained and Heterostructured Materials (UFGH XIII)
|
| Presentation Title |
Bio-Compatibility of HPT-Processed Commercially Pure Mg and a MgZnCe Alloy |
| Author(s) |
Praveen Kumar, Lochan Upadhayay, Kaushik Chatterjee |
| On-Site Speaker (Planned) |
Praveen Kumar |
| Abstract Scope |
Mg and its alloys are being explored for bioresorbable bone implants; however, low strength limits its applications. One of the routes to enhance their strength is severe plastic deformation (SPD) that generates ultra-fine grained (UFG) microstructure; however, corrosion resistance, an important parameter in biological applications, of UFG materials may be inferior owing to higher grain boundary fraction. We investigate effects of high-pressure torsion (HPT), an SPD process, on the mechanical, corrosion and in-vitro bio-compatibility properties of commercially pure (CP) Mg and Mg-6Zn-0.2Ce alloy. While the bio-compatibility and corrosion responses of CP Mg insignificantly changed with HPT processing, two-turn HPT samples showed a significant increase in yield and ultimate tensile strengths and hardness. The Mg alloy showed a similar response; however, its corrosion resistance improved noticeably following two turns of HPT. Overall, HPT processing up to a limited number of turns may benefit the biological applications of Mg and its alloys. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Biomaterials, Magnesium, Characterization |