About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Titanium Technology
|
| Presentation Title |
Decoding microstructural anisotropy and mechanical response of hBN reinforced Ti matrix processed via selective Laser melting. |
| Author(s) |
Satyavan P. Digole, Sanoj Karki, Amit Choudhari, Tushar Borkar |
| On-Site Speaker (Planned) |
Satyavan P. Digole |
| Abstract Scope |
To enhance microstructural isotropy and mechanical performance, hexagonal boron nitride (hBN) was incorporated into a titanium (Ti) matrix via selective laser melting (SLM). Microstructural analysis of pure Ti revealed large columnar grains along the build and scan directions. In contrast, the addition of hBN led to the in-situ formation of TiB and α (Ti, N) phases facilitated by in-situ reactions between Ti and hBN. Formed in-situ precipitates, distributed along grain boundaries and within grains, effectively suppressed columnar grain growth and promoted sub-grain formation, resulting in a refined, equiaxed microstructure. The hBN-reinforced samples exhibited significantly improved hardness (305 HV) and enhanced tensile strength (YS: 910 MPa and UTS: 950 MPa), though with reduced ductility (16 %) compared to pure Ti (Hardness: 230 HV, YS: 560 MPa, UTS: 600 MPa, and ductility: 28%). This study demonstrates the potential of hBN as a reinforcement for tailoring Ti-based alloys for advanced structural applications. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Titanium, Additive Manufacturing, Characterization |