Laser Directed Energy Deposition Additive Manufacturing Process (L-DED)

2021 ◽  
Author(s):  
Keyword(s):  
Additive Manufacturing ◽  
Manufacturing Process ◽  
Energy Deposition ◽  
Directed Energy Deposition ◽  
Directed Energy

Heat Treatments of P295GH Steel Made by Directed Energy Deposition: Metallography and Hardness

2021 ◽  
Vol 1046 ◽  
pp. 65-70
Author(s):  
Solène Lhabitant ◽  
Alain Toufine ◽  
Anis Hor
Keyword(s):  
Heat Treatment ◽  
Additive Manufacturing ◽  
Metal Powder ◽  
Manufacturing Process ◽  
Isotropic Material ◽  
Energy Deposition ◽  
Xrd Analysis ◽  
Directed Energy Deposition ◽  
Before And After ◽  
Directed Energy

Directed energy deposition (DED) is an Additive Manufacturing process deposing fused metal powder on a preexisting substrate. This document shows the influence of heat treatment on P295GH deposit made by DED, for hybridization process. The heat treatment must reduce the macroscopic differences between the rolled substrate and the deposited DED material. The experimental plan has been defined around AC3 temperature, according to P295GH existing literature. XRD analysis, hardness measurements and metallographic inspections have been performed on samples before and after heat treatment. XRD analysis and hardness measurements have shown an isotropic material. The as-built microstructure is ferritic and acicular, but coarsens after the heat treatment. The study promotes a heat treatment at 800°C during 3 hours to obtain the best compromise between properties, impact on the substrate and differences with the rolled substrate.

A coupled fluid-mechanical workflow to simulate the directed energy deposition additive manufacturing process

2021 ◽  
Vol 67 (4) ◽  
pp. 1041-1057
Author(s):  
Lauren L. Beghini ◽  
Michael Stender ◽  
Daniel Moser ◽  
Bradley L. Trembacki ◽  
Michael G. Veilleux ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
Manufacturing Process ◽  
Energy Deposition ◽  
Directed Energy Deposition ◽  
Directed Energy

scholarly journals A thermal-mechanical finite element workflow for directed energy deposition additive manufacturing process modeling

2018 ◽  
Vol 21 ◽  
pp. 556-566 ◽  
Author(s):  
Michael E. Stender ◽  
Lauren L. Beghini ◽  
Joshua D. Sugar ◽  
Michael G. Veilleux ◽  
Samuel R. Subia ◽  
...  
Keyword(s):  
Finite Element ◽  
Additive Manufacturing ◽  
Process Modeling ◽  
Manufacturing Process ◽  
Energy Deposition ◽  
Directed Energy Deposition ◽  
Directed Energy
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