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Meeting 2022 TMS Annual Meeting & Exhibition
Symposium Defects and Properties of Cast Metals IV
Presentation Title Elucidating the Relationship between Arc Behavior and Solidification Defects during Vacuum Arc Remelting of Superalloys
Author(s) Daniel McCulley, Joshua Motley, Matthew Cibula, Paul E. King
On-Site Speaker (Planned) Daniel McCulley
Abstract Scope Measurements of external magnetic fields during vacuum arc remelting (VAR) provide information on the distribution and location of arc distributions during processing. Arc dynamics have been proven to be connected to solidification defects through disturbances in the heat flux and the generation of conditions that lend themselves to inclusion entrainment. An enticing pathway to ensure and/or improve the quality of certain superalloys is through monitoring and control of the arc dynamics. Ampere Scientific has shown the ability to distinguish between normal and off-normal arc conditions during operations through careful analyses of magnetic fields generated by the arcs across the arc gap. For example, constricted arcs during superalloy processing have no overt signature in traditional VAR process signals, however the magnetic field variances provide instantaneous feedback as to their occurrence. Here we present our work towards characterizing the relationship between arc behavior and solidification defects using the VARmetric measurement system.
Proceedings Inclusion? Planned:
Keywords Solidification, Process Technology, 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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