| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Designing Complex Microstructures through Additive Manufacturing
|
| Presentation Title |
Additive Manufacturing Based Design Approach For Biomedical Implant Applications |
| Author(s) |
Sarang Saji, Tirthesh Ingale, Adebowale Odumuwagun, Allison Beese, Peter Collins, Narendra Dahotre, Rajarshi Banerjee |
| On-Site Speaker (Planned) |
Sarang Saji |
| Abstract Scope |
Additive manufacturing-based processing permits the grading of alloy compositions with site-specific properties within a single component. Here, we have attempted to achieve such compositional grading using laser-directed energy deposition (L-DED) in a deposit ranging from 100% Ti-6Al-4V (Ti64) on one end, to 100% Ti-35Nb-7Zr-5Ta (TNZT) on the other end. Along with a gradual change in modulus, the compositional gradient in these deposits leads to a change in microhardness. By optimizing the printing parameters, we have been able to print low porosity compositionally graded Ti64-TNZT builds (total of eleven compositional variations in a single build). Towards the Ti64-rich end, the microstructure consists of coarse HCP alpha laths within a BCC beta matrix which eventually transforms to a 100% beta microstructure towards the TNZT-rich end. Along with this phase fraction change, TNZT addition also refines alpha laths. This microstructural change was rationalized based on CALPHAD-based thermodynamic calculations. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Titanium, |