| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Solid-State Phase Transformations and Microstructural Evolution
|
| Presentation Title |
Process Dependent Nanoscale Vanadium Clustering within Martensite Laths in Laser Powder Bed Fused Additively Manufactured Ti6Al4V |
| Author(s) |
Mangesh Vyankat Pantawane, Sriswaroop Dasari, Srinivas Aditya Mantri, Rajarshi Banerjee, Narendra B Dahotre |
| On-Site Speaker (Planned) |
Mangesh Vyankat Pantawane |
| Abstract Scope |
The repetitive and rapid nature of thermal (heating/cooling) cycles experienced in solid-state Ti6Al4V additively manufactured by laser powder bed fusion (LPBF-AM) can partially temper the non-equilibrium state of martensitic laths. The homogenous distribution of nanoscale vanadium clustering forms within the martensitic laths of LPBF-AM Ti6Al4V and can be rationalized through thermo-diffusion kinetics derived from computational multiphysics model. The computational model predicts the extremely rapid thermokinetics associated with thermal cycles experienced at any given location of LPBF-AM Ti6Al4V. The numerically estimated effective V diffusion length of 6.61 nm indicates kinetic-limited diffusion resulting in V nanoclusters and further matches with atom probe tomography evaluations of half the inter-cluster spacing of 7 nm. |
| Proceedings Inclusion? |
Planned: |