About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
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Additive Manufacturing Modeling, Simulation and Machine Learning
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Presentation Title |
Numerical Model to Unravel Thermal Evolution and Material Flow Behavior in Additive Friction Stir Deposition of Mg-alloy |
Author(s) |
Shashank Sharma, K.V Mani Krishna, Sameehan S Joshi, M Radhakrishnan, Mangesh V Pantawane, Shreyash M Patil, Rajarshi Banerjee, Narendra B Dahotre |
On-Site Speaker (Planned) |
Shashank Sharma |
Abstract Scope |
Additive friction-stir deposition (AFSD) is a point of need disruptive manufacturing technology with the ability to print macro metal parts. In an effort to relate process intrinsic thermo-kinetic and thermo-mechanical effects, a finite element thermal and material flow model has been developed. The model incorporates pertinent process effects such as heat generation due to frictional heating and adiabatic heating due to plastic dissipation. AFSD experiments were conducted on a MELDŽ machine, and the feedstock and baseplate were machined/cut out commercially available AZ31B Mg (Mg-3Al-1Zn-0.5Mn in wt%). The predicted transient thermal profiles agree reasonably well with thermocouple temperature profiles obtained during the experiment. In addition, the temperature-compensated strain rate (Zener-Holloman, Ze) parameter correlates well with the observed microstructure. Sensitivity analysis is employed to understand the role of phenomenological factors such as material flow, tool translation velocity, and rotational speed on the evolution of temperature and strain rates during the AFSD process. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Modeling and Simulation, Shaping and Forming |