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Meeting 2020 TMS Annual Meeting & Exhibition
Symposium Purveyors of Processing Science and ICME: A SMD Symposium to Honor the Many Contributions of Taylan Altan, Wei Tsu Wu, Soo-Ik Oh, and Lee Semiatin
Presentation Title Modeling of the Solidification Structure Evolution of Ti-6Al-4V Processed via Electron Beam Powder Bed Fusion
Author(s) Laurentiu Nastac, Edwin Schwalbach, Kevin Chaput, Todd Butler
On-Site Speaker (Planned) Laurentiu Nastac
Abstract Scope A fast-acting discrete source additive manufacturing process model was coupled with a stochastic solidification structure model to predict grain structure evolution of Ti-6Al-4V alloy during Electron Beam Powder Bed Fusion (EB-PBF). The capabilities of the developed model include studying the effects of process parameters (power input, speed, beam shape) and part geometry on solidification conditions and their impact on the resulting solidification structure evolution. Grain size, morphology, and crystallographic orientation can be assessed, and the model can assist in achieving better control of the solidification microstructures and to establish trends in the solidification behavior in AM components. Validation was accomplished based on EB-PBF experiments using an Arcam A2 previously performed at Oak Ridge National Lab and subsequently analyzed at AFRL. It is expected that the approach can be extended to predict solidification structure of superalloys as well as laser PBF processes.
Proceedings Inclusion? Planned: Supplemental Proceedings volume

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A Road Map of Four Decade Journey to Modeling Thermo-mechanical Processes and Microstructure Evolution
An (incomplete) ICME Framework for Modeling Additive Manufacturing
Annealing Twins in Wrought Polycrystalline Superalloys
Application of the CALPHAD Method in the Framework of ICME
Austenite Transformation Behavior during Tensile Deformation of Quenched and Partitioned Steels
Development and Calibration of Numerical Meso-scale Models of Microstructure Evolution for Concurrent Recovery, Recrystallization, and Grain Growth with Zener Pinning
Development and Optimization of a Novel SPPARKS Recrystallization Model for AM IN718
Directional Recrystallization Processing
Engineered Residual Stress Optimization and Utilization
Enhancing the Properties of Ni-based Superalloys via Mesoscale Engineering
Genomic Materials Design: Science-based Engineering
Heterogeneous Deformation during Forming of Pure Niobium and its Influence on Superconducting Radio Frequency Cavity Performance
Hierarchical Multiscale Modeling of Microtextured Regions in Ti-6242 during Alpha/beta Processing
Integrated Approaches to Alloy Industrialization Using Numerical Simulation and Physical Modeling
Manipulation of Microstructure and Microstructural Gradients through Dehydrogenation of Hydrogen-sintered Ti-6Al-4V
Martensitic Variant Selection Under Applied Stress: A New Approach Applied to the β→𝛼 Transformation in Titanium
Mesoscale Simulations of Processing-microstructure Linkages during Additive Manufacturing
Metallic Alloy Microstructure Selection during Rapid Solidification and Additive Manufacturing
Microstructure Control of Nickel based Superalloy Forgings: a Focus onto Post-dynamic Evolutions
Microstructure Underpins Processing
Modeling Beta Phase Texture Evolution during Alpha+Beta Forging to Understand Precursors to Coarse (“Abnormal”) Grain Formation
Modeling of the Solidification Structure Evolution of Ti-6Al-4V Processed via Electron Beam Powder Bed Fusion
Modeling Pore Closure in Titanium Alloys
On the Mechanical Behavior of Keyhole-free Friction Stir Welded Copper-Aluminum Spot Joints
Optimizing Metals Additive Manufacturing
Processing Heterostructured Materials for Superior Mechanical Properties
Pushing the Performance Limits of Metallic Alloys through Severe Plastic Deformation Processing
Regulating Plastic Deformation by Structural Phase Transformations and Cice Vesa for Unprecedented Mechanical Properties
Role of Thermo-mechanical-chemical Transients: Relevance to Welding and Additive Manufacturing of Structural Metals
The Challenges of Refractory Alloy Processing: A Case Study in a Refractory Complex Concentrated Alloy
The Effects of Alpha-beta Interaction on the Texture Development of Zr and Ti Alloys during Hot Working
The Evolution of Abnormal Grains Structures during Beta Annealing of Ti-64 Wrought Products
The Operation of a Research Scale Esr Furnace and its Impact on Trace Elements
The Role of Plastic Rotation in the Breakdown of Colony Microstructures in Two Phase Titanium Alloys
Towards Rapid Throughout Measurement of Grain Boundary Properties
Transformations, Recrystallization, Microtexture and Plasticity in Titanium Alloys
Zoning Thermomechanical Process History Data Using Unsupervised Machine Learning

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