Optimizing laser power of directed energy deposition process for homogeneous AISI M4 steel microstructure
| Primer Autor |
Habraken, Anne Marie
|
| Co-autores |
Jardin, Ruben Tome
Tuninetti, Victor
Tchuindjang, Jerome Tchoufang
Duchene, Laurent
Hashemi, Neda
Tran, Hoang Son
Carrus, Raoul
Mertens, Anne
|
| Título |
Optimizing laser power of directed energy deposition process for homogeneous AISI M4 steel microstructure
|
| Editorial |
ELSEVIER SCI LTD
|
| Revista |
OPTICS AND LASER TECHNOLOGY
|
| Lenguaje |
en
|
| Resumen |
A finite element model of directed energy deposition (DED) process predicts the thermal history during the manufacturing of high speed steel cuboid samples. The simulation result validation relies on comparisons between measured and predicted data such as temperature histories within the substrate and the melt pool depth of the last coating layer. Integrated within an optimization loop, these DED simulations identify two variable laser power functions able to generate a constant melt pool size. These functions are expected to provide a homogeneous microstructure over layers. The computed thermal fields and the microstructure generated by three AISI M4 experiments performed with the constant laser power case and the two optimized functions at three points of interest located at different depths within the deposit are correlated. The effect of the melt superheating temperature and the thermal cyclic history on micro and nanohardness measurements is observed. As a result, the optimized laser power functions provide samples with more homogeneous microhardness than the constant laser power function, however, the homogeneity of microstructure is not fully confirmed by the nanohardness map throughout the deposited M4 steel layers.
|
| Fecha Publicación |
2023
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| Tipo de Recurso |
artículo original
|
| doi |
10.1016/j.optlastec.2023.109426
|
| Formato Recurso |
PDF
|
| Palabras Claves |
Finite element modeling
Numerical optimization
Additive manufacturing
Directed energy deposition
Melt pool size
Nanohardness map
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| Ubicación del archivo | |
| Categoría OCDE |
Óptica
Física
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| Materias |
Modelado de elementos finitos
Optimización numérica
Fabricación aditiva
Deposición de energía dirigida
Tamaño del estanque de fusión
Mapa de nanodureza
|
| Identificador del recurso (Mandatado-único) |
artículo original
|
| Versión del recurso (Recomendado-único) |
versión publicada
|
| License |
CC BY-NC-ND 4.0
|
| Condición de la licencia (Recomendado-repetible) |
CC BY-NC-ND 4.0
|
| Derechos de acceso |
acceso abierto
|
| Access Rights |
acceso abierto
|
| Id de Web of Science |
WOS:001028978500001
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| ISSN |
0030-3992
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| Tipo de ruta |
verde# hibrida
|
| Categoría WOS |
Óptica
Física
|
| Referencia del Financiador (Mandatado si es aplicable-repetible) |
RW 11-1-7335
UFRO DI22-0067
|
cienciaabierta.ufro.cl
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