| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Solid-State Phase Transformations and Microstructural Evolution
|
| Presentation Title |
CALPHAD Based Thermo Kinetic Modeling for Additive Manufacturing (AM): A Case Study for Fusion Based and Supersolidus Liquid Phase Sintering During Binder Jet |
| Author(s) |
Rangasayee Kannan, Peeyush Nandwana |
| On-Site Speaker (Planned) |
Rangasayee Kannan |
| Abstract Scope |
The aim of this talk is to demonstrate the use of thermo-kinetic models for understanding the underlying phase transformations in laser powder bed fusion and binder jet additive manufacturing, technologies on the opposite side of the spectrum. While the former results in far from equilibrium conditions, the latter takes place at near thermodynamic equilibrium. As a case study, the thermodynamic concepts will be applied to laser powder bed fusion of grade 300 maraging steel to predict precipitation and austenite reversion during post-fabrication aging heat treatments, and to H13 tool steel manufactured using binder jet AM, to predict phase transformations during sintering, hot isostatic pressing, and solutionizing and tempering heat treatment. Results highlight the fact that an ICME approach can be used to decide the optimal temperature/time combinations for post-AM heat treatments, thereby reducing the time/energy/cost associated with excessive experimentation. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Phase Transformations, ICME |