| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
2023 Technical Division Student Poster Contest
|
| Presentation Title |
SPG-23: Effect of Laser Surface Remelting on the Microstructure, Mechanical, Tribological and Corrosion Properties of Bio-applicable Ti40Nb25Zr25Ta10 Medium Entropy Alloy (MEA) with 0.5 at. % O |
| Author(s) |
Labani Mustafi, Van Thuong Nguyen, Qiushi Deng, Lu Jiang, Adam Taylor, Tingting Song, Xiaobo Chen, Daniel Fabijanic, Ma Qian |
| On-Site Speaker (Planned) |
Labani Mustafi |
| Abstract Scope |
Medium-entropy alloys (MEAs) provide a novel design concept for metallic biomaterials. A non-equiatomic bio-applicable as-cast Ti40Nb25Zr25Ta10 MEA with 0.5 at. % O was surface remelted by laser. The consequent effect on the constituent phases, microstructures, mechanical properties, tribological and corrosion resistance properties was investigated. It exhibited a BCC phase after laser surface remelting with a significant decrease in grain size from about 106 μm to 12 μm, accompanied by an increase in hardness from 4.44 ± 0.29 GPa to 7.58 ± 0.15 GPa. Accordingly, the wear rate decreased by 22.5% at applied loads in the range of 200-600 µN load. The corrosion current density of the laser surface remelted MEA (0.007 ± 0.06 µA/cm2) was reduced compared to the as-cast (0.02 ± 0.08 µA/cm2) in Hank’s solution. The improved corrosion resistance is attributed to grain refinement. Laser surface remelted Ti40Nb25Zr25Ta10 MEA with 0.5 at.% O offers a potential candidate for biomedical applications. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
High-Entropy Alloys, Biomaterials, Additive Manufacturing |