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Meeting 2017 TMS Annual Meeting & Exhibition
Symposium Pioneers in Additive Manufacturing
Presentation Title A-96: FEM Modeling of Steel Additive Manufacturing Using Laser Hot-Wire Process
Author(s) Zhenguo Nie, Gang Wang, James D. McGuffin-Cawley, Badri Narayanan, Yiming (Kevin) Rong
On-Site Speaker (Planned) Zhenguo Nie
Abstract Scope The laser hot-wire (LHW) process has the potential to deposit material at high rates using low laser power. Numerical simulation of LHW was conducted to obtain the temperature, stress and strain fields, and the distortion. The outstanding features for numerical simulation are additive geometry and numerous analysis steps. The INP files of ABAQUS are compiled by a Matlab program because of a great deal of step and element definitions. Temperature and distortion were both measured to validate the FEA model. The verification result indicates that the model is accurate. Calculations show that the maximum residual stress is located in the junction between the deposit and substrate. The junction area becomes the most likely crack position. The processing window of stable hot-wire deposition was mapped via numerical computation method. It is shown that the stable deposition has top and bottom limitations under a certain current intensity and wire feed speed.
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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