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Meeting 2017 TMS Annual Meeting & Exhibition
Symposium Pioneers in Additive Manufacturing
Presentation Title Laser Engineered Net Shaping - AM Metal Parts with Exceptional Material Properties
Author(s) John E. Smugeresky, David M Keicher
On-Site Speaker (Planned) John E. Smugeresky
Abstract Scope The Laser Engineered Net Shaping (LENS) process was developed with a focus on 3D printing metallic components without degradation to material composition and with materials properties comparable or better than similar composition wrought metals. Experimental results have shown that this objective has been met for a variety of material systems. Results will be presented for 304 stainless steel, Ti-6V-4Al and Inconel 625. Historical data demonstrates that compositional variation between the starting powder stock and LENS fabricated components is minimal. Numerous experiments have shown increase in both strength and ductility in LENS fabricated parts as compared to wrought counterparts. Data will be presented to support that these properties are achieved due to the high cooling rate associated with the LENS process and the strengthening mechanism will be discussed and supported with experimental data. Sandia National Laboratories is funded by the U.S. Department of Energy’s National Nuclear Security Administration under contract DE-AC04-94AL85000.
Proceedings Inclusion? Planned: Supplemental Proceedings volume


3DP Retrospective: Do Inventors Know What They Are Doing?
A-94: 3D Additive Manufacturing of Metals at Micro/Nanoscale Using Localized Electrodeposition
A-95: Direct Metal Write Additive Manufacturing of Rare-earth Modified Aluminum Alloys Using Electromagnetic Heating Systems
A-96: FEM Modeling of Steel Additive Manufacturing Using Laser Hot-Wire Process
A-97: Microstructure Evolution and Galling Properties of Hard Facing Coatings Deposited Using Laser Directed Energy Deposition
A-98: Novel High Temperature Drop on Demand Liquid Metal-jetting for the Production of Complex 2D and 3D objects
A History of Additive Manufacturing
AFRL Contributions to Additive Manufacturing of Titanium, ca 2000
Assent and Decline of LOM Technology
Directed Light Fabrication: A Near-Net Shape Process using Laser Assisted Metal Deposition
Early Developments of AM within the UK
Laser Deposition of Metallic Powders
Laser Engineered Net Shaping - AM Metal Parts with Exceptional Material Properties
Making Things Bit-by-byte: Opportunity in a Fortuitous Convergence of Technologies
Pioneering International Consensus
Process Fundamentals for Selective Laser Melting: Power Ratio, Melting, Porosity, and Build Properties

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