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Meeting 2022 TMS Annual Meeting & Exhibition
Symposium Additive Manufacturing and Innovative Powder Processing of Functional and Magnetic Materials
Presentation Title Selective Laser Melting of NiTi: Experiments and Modeling to Correlate Hatch Spacing, Texture, Residual Stress, and Superelastic Response
Author(s) Peter Martin Anderson, Natalie Zeleznik, Alejandro Hinojos, Mohammadreza Nematollahi, Narges Shayesteh, Soheil Saedi, Mohammad Elahinia, Haluk Karaca, James Cawley, Michael Mills
On-Site Speaker (Planned) Peter Martin Anderson
Abstract Scope Recent work has demonstrated that Ni50.8Ti49.2 (at%) samples fabricated by selective laser melting (SLM) can provide up to 5.6% superelastic compressive strain without any post heat treatment. Of particular interest is the ability to manipulate texture and superelastic response by varying the hatch spacing used in the SLM process. Samples with 80 micron hatch spacing display relatively stable superelastic stress-strain response under repeated mechanical cycling while those with 180 micron hatch spacing exhibit ratcheting and evolution to a more linearized response during cycling. The underlying physics for the different responses are explored using mechanics modeling that captures the effects of texture and residual stress on cyclic stress-strain response. The results indicate that a variety of superelastic responses may be attained through the manipulation of hatch spacing during SLM processing. This offers a wide functional space within which to design SMA devices.
Proceedings Inclusion? Planned:
Keywords Additive Manufacturing, Phase Transformations, Mechanical Properties

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Additive Manufacturing as a Hybrid Synthesis-joining Method to Optimize Magnetic and Mechanical Properties of Dissimlar Alloys
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Additively Manufactured Nitinol for Prescribed Properties and Prediction of Its Bulk Elastic Properties by Molecular Dynamic Simulation
Controlled Shape-morphing Metallic Components for Deployable Structures
Deep Learning with Generative Adversarial Network for Ti-6Al-4V Surface Roughness Improvement in Direct Energy Deposition Process
Growth Optimization of Single Crystal Fibers of Congruently and Incongruently Melting Garnets via Laser Heated Pedestal Growth Method
Improved Near-infrared Absorption for Additive Manufacturing Feedstock Using Reduced Graphene Oxide
Influence of Composition and Microstructure on Magnetic Properties of Additively Manufactured Fe/Co/Ni Based Soft Magnetic Alloys
Iron Nitride Based Soft Magnets through Spark Plasma Sintering
J-1: Development of NiTiMo Alloys Using Powder Blown Laser Direct Energy Deposition Additive Manufacturing
Laser Additive Manufacturing of Fe-Co and Fe-Si Based Soft Magnetic Alloys
Mapping the Selective Laser Melting Parameter-thermophysical Property Space of a Ni51.2Ti Alloy Using a Combined Experimental and Computational Approach
Mechanical Alloying and Characterization of Al2Ni5Co6Fe6Sm0.2 High-entropy Alloy
Microstructure of Additively Manufactured Magnetic Shape Memory Alloys
Modeling Alignment of Magnetic Particles in Functionalized Magnetic 3D Printer
NOW ON-DEMAND ONLY - X-ray and Neutron Scattering Reveals Insights into the Formation and Thermal Stability of Metastable Disordered Phases in FeCo and FeSi
Process-structure-property Relationships in Laser Powder Bed Fusion of Permanent Magnetic Nd-Fe-B
Reduction of Power Losses in SLM Printed FeSi6.5 Alloy by Geometry Optimizing
Selective Laser Melting of NiTi: Experiments and Modeling to Correlate Hatch Spacing, Texture, Residual Stress, and Superelastic Response
Selective Laser Melting of NiZnCu-ferrite Soft Magnetic Composites: Process-property Relationships
Structure-processing-magnetic Property Interrelationships in Additively Manufactured FeCo-2V and Fe-80Ni-5Mo Soft Magnetic Alloys
The Development of a Machine Learning Guided Process for the Additive Manufacturing of Thermoelectric Materials

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