Repositorio UFRO · Omeka S

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
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
Ubicación del archivo	http://dx.doi.org/10.1016/j.optlastec.2023.109426
Categoría OCDE	Óptica Física
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
ISSN	0030-3992
Tipo de ruta	verde# hibrida
Categoría WOS	Óptica Física
Referencia del Financiador (Mandatado si es aplicable-repetible)	RW 11-1-7335 UFRO DI22-0067