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Meeting 2018 TMS Annual Meeting & Exhibition
Symposium Multi-material Additive Manufacturing: Processing and Materials Design
Presentation Title A Separable Support Strategy for 3D Printing of Complex Metal Parts
Author(s) Nihan Tuncer, Jay C. Tobia, Michael A. Gibson, Nicholas M. Mykulowycz, Alexander C. Barbati, Aaron Preston, Dans Krause, Brian D. Kernan, Mark Sowerbutts, Dana Krause, Richard Fontana, Jonah S. Myerberg, Ricardo Fulop, Yet-Ming Chiang, Christopher A. Schuh, Animesh Bose, Jan Schroers, John Hart, Jay C. Tobia
On-Site Speaker (Planned) Nihan Tuncer
Abstract Scope Metal additive manufacturing (AM) enables fabrication of complex near-net shape parts. One of the challenges in metal AM is removal of supports used for printing complex geometries without further tooling. We introduce a metal AM approach based on printing thermoplastic binder matrix loaded with metallic powders followed by debinding and sintering. Multi-material extrusion allows support structures to be built with an interface layer that prevents bonding between the support and the part. This study demonstrates a separable support strategy that combines ceramic interface development with print parameter design to achieve minimum sintering deformation, smooth surface finish and easy support removal. Ceramic feedstocks were engineered to imitate shrinkage without densification to allow for undisturbed shrinkage of the surrounding metal. In addition, interface layer printing geometries were optimized. This technique not only enables effortless support removal, but also makes possible multi-component assemblies that are not possible with other 3D printing methods.
Proceedings Inclusion? Planned: Supplemental Proceedings volume


A Separable Support Strategy for 3D Printing of Complex Metal Parts
Additive Manufacturing of Inconel 718 – Ti6Al4V Bimetallic Structures Using LENS™
Additive Manufacturing of Periodic Metal-metal Composites
Additively Manufactured Functionally Graded Steels through a Novel Approach to Path Finding
Bimetallic Bonding via Two Methods of Direct Metal Deposition Additive Manufacturing
Design and Fabrication of Lightweight, Hierarchical Multi-material Composites with Tunable Thermal Mechanical Properties
Design and Optimization of Fiber Reinforced Polymers Enabled by Additive Manufacturing
Developing Functionally Graded Metals through Additive Manufacturing: Progress, Challenges, and Future Vision for a Unique Technology
Development of Novel Squeeze Cast High Tensile Strength Al-Si-Cu-Ni-Sr Alloys
Dynamic Microstructural Control in Printable Colloidal Structures via Acoustic Focusing
Experimental-computational Approach toward Design of Additively Manufactured Functionally Graded Metallic Materials
Extrusion of Direct-write Inks with Particle Gradients
Fabrication of WC-Co Metal Matrix Composites via Melt Infiltration Using Binder Jet Additive Manufacturing
Hybrid Manufacturing of Functionally Graded M300 and 316L Steels
Large-scale Additive Manufacture of MMC and Layered Multi-material Products
Liquid-solid Phase Metamaterials Fabricated by Two-photon Lithography
Meso-scale Design of Heterogeneous Material Systems in Multi-material Additive Manufacturing
Microstructure and Mechanical Properties of Additive Friction Stir Processed Dissimilar Metals
Multi-material Topology Optimization for 3D Printed Multi-functional Architected Materials and Components
Multi Phase Materials with Architectured Micro Scale Interfaces
Nanomechanical and EBSD Characterization of Thermo-mechanical Additive Manufactured Inconel 625
Novel High Temperature Drop on Demand Liquid Metal-jetting for the Production of Single and Multi-material 3D Objects
Hide details for [<a href="/PM/PM.nsf/ApprovedAbstracts/A5DAB4B0480A53518525815D0047C34F?OpenDocument">Processing of High MeltiProcessing of High Melting Temperature Polymer with Ceramic Particles as Processing Aid in Selective Laser Sintering
[Replication or Save Conflict]
Realizing Multi-functional Products via Multi-material Additive Manufacturing Processes
Strong and Robust Nanoarchitectures
Understanding and Predicting the Heterogeneous Local Ligament-level Deformation Response in Metal Lattice Structures

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