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Meeting Materials Science & Technology 2019
Symposium Advanced Manufacturing, Processing, Characterization and Modeling of Functional Materials
Presentation Title Integrated Heat Transfer and Material Model to Predict Magnetic Field-induced Strain in an Additively Manufactured Magnetic Shape Memory Alloy
Author(s) Yao Xu, Sneha Prabha Narra
On-Site Speaker (Planned) Yao Xu
Abstract Scope Magnetic shape memory alloys such as Ni-Mn-Ga, show a reversible magnetic field-induced strain (MFIS). One of the factors contributing to this MFIS is the motion of twin boundaries in the martensitic phase. Laser powder bed fusion (LPBF) is an emerging technology capable of fabricating materials with complex geometries and tailored microstructures. The potential of applying LPBF to manufacture Ni-Mn-Ga poses challenges related to parameter optimization for microstructure control. In this work, a finite element model is developed to estimate the thermal history for determining the microstructure evolution during solidification, as validated by a single melt track experiment. Furthermore, a kinetic model is proposed to capture the magneto-mechanical deformation of polycrystalline Ni-Mn-Ga for different microstructures. By combining these two models, the relationship between LPBF processing parameters (beam power and travel speed) and MFIS can be defined. Based on that, the processing parameters can be optimized for higher MFIS.
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
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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
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