| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing of Metals: Applications of Solidification Fundamentals
|
| Presentation Title |
Spatial Variation of Thermokinetics and Corresponding Grain Morphology Evolution in Laser Surface Engineered IN718 |
| Author(s) |
Mangesh Vyankat Pantawane, Sriswaroop Dasari, Srinivas Aditya Mantri, Rajarshi Banerjee, Srikumar Banerjee, Narendra Dahotre |
| On-Site Speaker (Planned) |
Mangesh Vyankat Pantawane |
| Abstract Scope |
The thermokinetics of laser-based additive manufacturing techniques such as direct energy deposition (DED) and laser powder bed fusion (LPBF) substantially vary due to significantly different sets of process parameters associated with each technique. These fundamental thermokinetics were realized via laser surface engineering of IN718 with varying process parameters. The study employs finite element method-based multiphysics computational modeling to recognize the spatial and transient temperature distribution. The variation of thermokinetic parameters such as solidification growth rate, thermal gradients, and cooling rate was evaluated within the meltpool. The significant spatial variation of these parameters resulted in varying grain morphology within the meltpool. In addition, the computational model predicted high thermal stresses, which, in turn, increased the density of dislocations. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Computational Materials Science & Engineering, |