Article (Scientific journals)
Impact of Boundary Parameters Accuracy on Modeling of Directed Energy Deposition Thermal Field
Gallo, Calogero; Duchene, Laurent; Quy Duc Pham, Thinh et al.
2024In Metals, 14 (2), p. 173
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Keywords :
General Materials Science; Metals and Alloys; 3d printing; DED; 2D simulation; melt pool; cooling rate
Abstract :
[en] Within the large Additive Manufacturing (AM) process family, Directed Energy Deposition (DED) can be used to create low-cost prototypes and coatings, or to repair cracks. In the case of M4 HSS (High Speed Steel), a reliable computed temperature field during DED process allows the optimization of the substrate preheating temperature value and other process parameters. Such optimization is required to avoid failure during the process, as well as high residual stresses. If 3D DED simulations provide accurate thermal fields, they also induce huge computation time, which motivates simplifications. This article uses a 2D Finite Element (FE) model that decreases the computation cost through dividing the CPU time by around 100 in our studied case, but it needs some calibrations. As described, the identification of a correct data set solely based on local temperature measurements can lead to various sets of parameters with variations of up to 100%. In this study, the melt pool depth was used as an additional experimental measurement to identify the input data set, and a sensitivity analysis was conducted to estimate the impact of each identified parameter on the cooling rate and the melt pool dimension.
Disciplines :
Materials science & engineering
Author, co-author :
Gallo, Calogero  ;  Université de Liège - ULiège > Urban and Environmental Engineering
Duchene, Laurent  ;  Université de Liège - ULiège > Département ArGEnCo > Analyse multi-échelles dans le domaine des matériaux et structures du génie civil
Quy Duc Pham, Thinh;  Department ArGEnCo-MSM, University of Liège, Quartier Polytech 1, Allée de la Découverte 9, 4000 Liège, Belgium
Jardin, Ruben;  Department ArGEnCo-MSM, University of Liège, Quartier Polytech 1, Allée de la Découverte 9, 4000 Liège, Belgium
Tuninetti, Víctor ;  Department of Mechanical Engineering, Universidad de La Frontera, Francisco Salazar 01145, Temuco 4811230, Chile
Habraken, Anne  ;  Université de Liège - ULiège > Département ArGEnCo > Département Argenco : Secteur MS2F
Language :
English
Title :
Impact of Boundary Parameters Accuracy on Modeling of Directed Energy Deposition Thermal Field
Publication date :
30 January 2024
Journal title :
Metals
eISSN :
2075-4701
Publisher :
MDPI AG
Volume :
14
Issue :
2
Pages :
173
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 15 February 2024

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