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Meeting 2022 TMS Annual Meeting & Exhibition
Symposium Defects and Properties of Cast Metals IV
Presentation Title Uncertainty Quantification of Model Predictions due to Fluid Flow in Laser Powder Bed Fusion of IN625
Author(s) Scott M. Wells, Matthew J. M. Krane
On-Site Speaker (Planned) Scott M. Wells
Abstract Scope Computational modeling of the laser powder bed fusion process is often restricted to the conduction dominant regime whereby advective heat transfer and fluid flow can be disregarded. Under processing conditions that result in high energy densities, fluid flow driven by Marangoni effects influence the uncertainty in solidification dynamics and melt pool dimensions which affect the as-built microstructure and scan strategies development. Using a computational fluid dynamics model for melt pool predictions of Inconel 625, and applying sparse grids and interpolation techniques, the uncertainty in input parameters including thermophysical properties and the surface tension gradient can be propagated to predictions of solidification time, cooling rates, and melt pool geometries. Results show the uncertainty in surface tension gradient had the largest affect of melt pool dimensions whereas uncertainty in laser absorptivity and specific heat capacity were the most influential on the solidification dynamics.
Proceedings Inclusion? Planned:
Keywords Additive Manufacturing, Computational Materials Science & Engineering, Modeling and Simulation

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

3D Characterization of Competitive Dendrite Growth and On the Role of Low Angle Grain Boundaries during Solidification of Single Crystal Ni-based Superalloys
Characterization of Second Phase Particles in Twin Roll Cast Aluminum Alloy AA 8011
Controlling Freckle Defect Formation Using Magnetic Fields
Elucidating the Relationship between Arc Behavior and Solidification Defects during Vacuum Arc Remelting of Superalloys
F-26: Correlation between Purification Effect and Surface Segregation of Impurities in Aluminium at High Temperatures
F-27: Modeling the Bonding and Structure of Non-metallic Inclusions within a Nickel Matrix during Forging
F-28: The Mechanical Properties and Microstructural of Cast Zinc though Aluminum Inoculation by Ultrasonic Treatment
Formation Mechanisms of Surface Blistering in AA6xxx Rolled Products: Microstructure Characterization, Ultrasonic Analysis, and Rolling Tests
Hybrid Additive Manufacturing of Island Grain Bicrystals
Improving Material Properties Using Contactless Ultrasonic Cavitation
Measurement and Simulation of Reoxidation Inclusions in Steel Casting
Modelling Concurrent Structural Mechanical Mechanisms in Microstructure Solidification
Modification of Cast and Wrought Aluminum Parts Using Hybrid Laser Hot-wire Manufacturing
NOW ON-DEMAND ONLY – Understanding Effects of Oxide Bifilms on Solidification Microstructures by Multiscale Modeling
Nucleation in Undercooled Melt upon Changes in the Electromagnetic Stirring
Particle Capture Defects in Continuous Steel Casting
Porosity Defects in High Pressure Die Castings: Mechanisms and Uncertainties
Porosity Formation in High Pressure Die Casting: Experiments and Simulations
Probabilistic Multiscale Finite Element Model for Predicting Strength and Fracture Strain of Cast Al-Si-Mg Alloy
Quantifying Pore Evolution during Laser Powder Fusion Using High-speed X-ray Imaging and High Fidelity Multiphase Simulation
Reduced-Order Multiscale Modeling of Elasto-Plastic Cast Alloys with Process-Induced Porosity
Research Progress of Composite Preparation Technology of Bimetallic Wire
The Influence of Environmental and Material Properties Data on Defect Predictions in Computational Fluid Dynamics Simulations of Investment Casting
Uncertainty Quantification of Model Predictions due to Fluid Flow in Laser Powder Bed Fusion of IN625

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