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Meeting 2020 TMS Annual Meeting & Exhibition
Symposium Additive Manufacturing of Functional and Energy Materials
Presentation Title Microstructural Characterization of Alnico Alloy Fabricated by Selective Laser Melting
Author(s) Paul F. Rottmann, Andrew Polonsky, McLean P. Echlin, Michael Krispin, Gotthard Rieger, Stefan Lampenscherf, Tresa M. Pollock, Carlos G. Levi
On-Site Speaker (Planned) Paul F. Rottmann
Abstract Scope Alnico alloys have regained increased interest in recent years as an alternative to rare earth containing permanent magnets to alleviate issues of supply instability and sustainability. The ability to additively manufacture permanent magnets additionally promises to increase sustainability by reducing material waste while expanding capabilities to enable system integration and production of novel geometries. The magnetic properties of alnico depend on a refined microstructure, so there is the substantial hurdle of understanding the complex processing—thermal history—microstructure relationships to achieve viability. The microstructural characterization of an alnico 8 alloy fabricated by selective laser melting will be presented. Characterization was performed by TEM and using the TriBeam system at UCSB for 3D analysis. The microstructure is comparable to conventionally-produced alnico, but the presence of αγ precipitates indicates that further process tuning is needed to achieve an optimal microstructure. Preliminary results from magnetic characterization conducted at Siemens will also be presented.
Proceedings Inclusion? Planned: Supplemental Proceedings volume

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

3D Ink Printing of Thermoelectric Materials
3D Printed Lithium Ion Batteries and Other Functional Devices
3D Printed Nanocomposites of Silicon Elastomer and Multiferroic Nanoparticles
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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