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Meeting Materials Science & Technology 2019
Symposium Advanced Manufacturing, Processing, Characterization and Modeling of Functional Materials
Presentation Title Computational Design of Additively Manufactured Compositionally Graded Alloys
Author(s) Tanner Kirk, Olga Eliseeva, Richard Malak, Raymundo Arroyave, Ibrahim Karaman
On-Site Speaker (Planned) Tanner Kirk
Abstract Scope The manufacturing of Functionally Graded Materials (FGMs) has been revolutionized by the layer-by-layer compositional control of Directed Energy Deposition (DED) processes. However, compositional grading between metal alloys is often complicated by the presence of deleterious phases in the interlayers. This work presents a computational design methodology that leverages CALPHAD modeling and robotic path planning algorithms to plan gradient paths between alloys. The methodology is capable of planning gradients that avoid deleterious phases in multicomponent systems that would be difficult or impossible to visualize. Furthermore, gradient paths can be optimized to minimize thermal stress gradients or to improve performance via user-defined property metrics. Extensions that incorporate the uncertainties of the models and the processing conditions are also explored. Case studies are presented that demonstrate the method’s effectiveness in the discovery of optimal gradients. Experimental results are also shown that validate the methodology via the manufacturing and characterization of designed gradients.
Proceedings Inclusion? Planned: At-meeting proceedings

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Computational Design of Additively Manufactured Compositionally Graded Alloys
Connecting Process Parameters to Grain Structure of Parts Produced by Laser Powder-bed Fusion Additive Manufacturing Using a Monte Carlo Potts Model
Design-Processing-Properties of Alternating/Multi-Layered, Metal-ceramic Composites Fabricated via Laser-based Additive Manufacturing
Direct Energy Deposition Material Process Validation for Remanufacture, Restoration, and Coating for Ground Vehicle Systems
Effects of Heat Treatments on H-phase Growth in Thermo-mechanically Processed NiTiZr
Effects of High Temperature Oxides on the Thermomechanical Properties of NiTiHf20 Shape Memory Alloy Wires
Effects of Hot-isostatic Pressing on the Microstructural and Magnetic Properties Development in Permalloy-80 Manufactured by Laser Powder Bed Fusion
Effects of Laser-beam Defocus on Microstructural Features of Compositionally Graded WC/Co Composites Additively Manufactured by Multi-laser Metal Deposition
Effects of Ni during Thermo-mechanical Processing in Ni-rich NiTiHf High Temperature Shape Memory Alloy
Epitaxial Growth of a Magnetic Shape-memory Alloy: Laser Metal Deposition of Ni-Mn-Ga
Integrated Heat Transfer and Material Model to Predict Magnetic Field-induced Strain in an Additively Manufactured Magnetic Shape Memory Alloy
Investigating SOFC Electrode Microstructures and Performance Degradation: A High Throughput Integrated Model
Investigation of the Deposition Mechanism of Nano-CeO2 Catalyst within SOFC Electrodes using Bio-adhesive Catechol Surfactants
Laser- and Binder-based Additive Manufacturing and Post-processing of Functional Magnetic Materials
Laser Powder Bed Fusion of Ti-rich TiNi Graded Lattice Structures: Process Optimisation, Geometrical Integrity and Mechanical Property
Machine Learning for Solving Metals AM Problems
Magnetic Shielding Promotion in Laser Powder Bed Fusion of NiFeMo Permalloy via Directional Grain Formation and Thermal Post Processing
Microstructure and Thermoelectric Properties of [001]c Grain-aligned Ca3Co4O9 Ceramics Prepared by Template Grain Growth
Numerical Modeling of Solid Scrap Melting above Bath in an Electric Arc Furnace
On the Effect of the Build Direction in Mechanical Fatigue Life of the SLM Fabricated NiTi
Optimization of Process Parameters for Additive Manufacturing of High Temperature Shape Memory Alloys
Optimizing Additive Manufacturing of NiTi by Controlling Linear and Volumetric Energy Densities
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P2-39: Effects of Cooling Rate and Ti Addition on Microstructure, Mechanical Properties and Corrosion Characteristics of Laser Deposited Ti-6Al-4V Alloy
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Reactive Flash Sintering of Functional Ceramics
Synchrotron Radiation X-ray Diffraction Measurements on Non-metallic Inclusions and their Effect on Fatigue Life in NiTiHf High Temperature Shape Memory Alloys
The Influence of Heat Treatment on the Transformation Behavior of Additively Manufactured NiTiHf Shape Memory Alloys
The Influence of Thermal Cycling on the Indentation-Induced Two-way Shape Memory Effect in NiTi Alloys

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