About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
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Additive Manufacturing Modeling, Simulation and Machine Learning
|
Presentation Title |
Development of a Multi Scale and Multi Physics Modeling Framework to Study the Defect Evolution in The Laser-based Powder Bed Fusion Process |
Author(s) |
Amrita Dixit, Pranjal Chauhan, Amarendra Kumar Singh |
On-Site Speaker (Planned) |
Amrita Dixit |
Abstract Scope |
Manufacturing of high-temperature metallic alloys in general and Ti6Al4V in particular, through the LPBF process is a great challenge for the industry due to the formation of various defects e.g., porosity, cracking and delamination due to strong dependency of the process on the processing parameters(e.g. Laser power,scan speed and hatch space). This study captures the defect formation which involves multi scale, multi-phase phenomena and is governed by fluid flow, heat and mass transfer, and phase changes. Laser material interaction gives rise to a complex physics which affects the powder particle dynamics due to gas expansion . A particle scale model is combined with mesoscale length scale model during melting and solidification. Evolution of micro structure and stress in the component and its influence on defect evolution will be studied. The overall goal is to develop a multi-scale framework which can enable minimization of key-defects in Ti6Al4V based components. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, ICME, Modeling and Simulation |