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Meeting Materials Science & Technology 2017
Symposium Non Beam-based Additive Manufacturing Approaches for Metallic Parts
Presentation Title Neutron Diffraction Mapping of Residual Stresses in Large-scale Wire-fed Additively Manufactured Components
Author(s) Jeff Bunn, Niyanth Sridharan, Srdjan Simunovic, Andrzej Nycz
On-Site Speaker (Planned) Jeff Bunn
Abstract Scope Additive manufacturing is an emergent manufacturing process capable of fabricating near net parts. However, powder bed metallic additive manufacturing is limited to small components. The inability to fabricate large structures (excess of 7 feet) is a significant challenge. Oak Ridge National Laboratory (ORNL) is extending the capabilities of metal additive manufacturing to the large scale. The process uses a robotic Metal Inert Gas (MIG) welding system. Despite the impressive capability of the system, the process is limited by the residual stresses (RS) and distortion. RS in these large-scale components are measured non-destructively using the NRSF2 strain scanning instrument at the High Flux Isotope Reactor at ORNL. The results are compared with models being developed at the Manufacturing Demonstration Facility (MDF) at ORNL.
Proceedings Inclusion? Definite: At-meeting proceedings

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A-17: Detailed Microstructural and Electrochemical investigation of 3D Printed and Arc Melted 316L Stainless Steel
A-18: High Velocity Hybrid Thermal Spray Systems for 3-D Coatings
A-19: Large-scale Additive Manufacturing of Steel Structures
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Binder Jetting 3D Printing: Improving Printer Capabilities and Expanding Available Materials
Densification and Sintering of Metallic Struts within Micro-trusses 3D-printed from Powder-based Liquid Inks
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Integrated Process Line for Fused Filament Fabrication of Metallic Parts Using Metal Powder Loaded Filaments
Large Scale Layered Object Manufacturing – Boundary Conditions for the Joining Process Diffusion Bonding
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Metal Additive Manufacturing through Friction Stir-facilitated Deposition
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Roadmap for Metal Hybrids Net-Shaped via Binder Jet Additive Manufacturing
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