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Meeting 2020 TMS Annual Meeting & Exhibition
Symposium Additive Manufacturing of Functional and Energy Materials
Presentation Title Effect of Post-process Heat Treatment on Microstructure and Properties of a Ni-Mn-Ga Alloy Deposited Using Laser Powder Bed Fusion
Author(s) Ville Laitinen, Alexei Sozinov, Andrey Saren, Antti Salminen, Kari Ullakko
On-Site Speaker (Planned) Ville Laitinen
Abstract Scope In this study, a Ni-Mn-Ga based magnetic shape memory (MSM) alloy was deposited using laser powder bed fusion (L-PBF), and a systematic design of experiments approach was used for investigating the effects of post-process chemical homogenization and structural ordering heat treatment on microstructure and properties of the deposited material. The experiments were implemented using temperature and duration of the heat treatment as varied parameters. The phase transformation and Curie temperatures of each sample were determined using low-field ac magnetic susceptibility method and differential scanning calorimetry, whereas the microstructures of the samples were characterized using SEM, X-ray diffraction and atomic/magnetic force microscopy. The results show that grain growth, recrystallization, and transition of the crystal structure from the mixed martensite structure of the as-deposited material to single martensite phase occurred during the heat treatment. Consequently, the deposited material showed recovery of the typical narrow phase transformations and ferromagnetic properties.
Proceedings Inclusion? Planned: Supplemental Proceedings volume

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3D Printed Polymer Multiferroic Composites
A-16 (Digital): Quantitative Microstructure Study of Binder-jet Printed and Sintered Ni-Mn-Ga Alloy
A-17: Layered Binder Jet Printing of Functional Ni-Mn-Ga Alloys
Additive Manufacturing of Multifunctional Continuous Carbon Fiber Composites via Coextrusion
Additive Manufacturing of NiTi Shape Memory Materials
Additive Manufacturing of Nitinol with Post Heat Treatment Characteristics
Additive Manufacturing of Rare Earth Bonded Permanent Magnets: Prospects and Challenges
Additive Manufacturing of Soft Magnetic Alloys
Advanced Additive Manufacturing for Functional Magnetic Materials
Characterization of as Selected Laser Melting Built and Vacuum Heat Treated NiTa Alloy for Hard Disc Applications
Complexity and Opportunities in Additive Manufactured NiTi-based Shape Memory Alloys
Development of an Austenitic/Martensitic Gradient Steel by Additive Manufacturing
Effect of Post-process Heat Treatment on Microstructure and Properties of a Ni-Mn-Ga Alloy Deposited Using Laser Powder Bed Fusion
Energy Absorbing Functional Composites with Negative Stiffness: Al-ZrO2 Fabricated by Additive Friction Stir Deposition
Experimental Investigation of Melt Pool Geometry, Microstructure, and Texture in NiMnGa Fabricated via Laser Powder Bed Fusion
Fabrication and Functional Properties of Selectively Laser Melted NiTi Lattice Structures Using Point Scanning Strategies
High Performance Zn-ion Batteries by Additive Manufacturing
Laser Processing of Bismuth Telluride Thermoelectric Materials for Solid-State Energy Conversion
Microstructural Characterization of Alnico Alloy Fabricated by Selective Laser Melting
Microstructure-property Correlations of LENS Processed NiTi
Multiscale-controlled Three-dimensional Electrodes for Lithium-ion Batteries
Polycrystal-inspired Hierarchical Lattice Materials
Porous Lithium Ion Battery Cathodes Prepared Using Selective Laser Sintering Exhibit Complex Microstructure and Dual Phase State
Selective Laser Melting of Co-Ni-Ga Shape Memory Alloys
Solid-state Additively Manufactured Thermal Energy Storage Materials
The Next Generation of NiTi-based Shape Memory Alloys: Developed for Additive Manufacturing
When Additive Manufacturing Meets Magnetic Materials: Advanced Processing for Green Technologies

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