RT info:eu-repo/semantics/article
T1 Influence of 17-4 PH stainless steel powder recycling on properties of SLM additive manufactured parts
A1 Giganto Fernández, Sara
A1 Martínez Pellitero, Susana
A1 Barreiro García, Joaquín
A1 Zapico García, Pablo
A2 Ingenieria de los Procesos de Fabricacion
K1 Ingeniería mecánica
K1 17-4PH stainless steel
K1 Additive manufacturing (AM)
K1 Mechanical properties
K1 Metallic powder reuse
K1 Powder bed fusion (PBF)
K1 Selective laser melting (SLM)
K1 3316 Tecnología de Productos Metálicos
AB [EN] Metal Additive Manufacturing (AM) processes are developing quickly. These processes have several attractive qualities, however, the quality of manufactured parts still remains a major issue that needs to be addressed if it is to become a prevalent technology in the industry. In some powder bed fusion techniques, such as Selective Laser Melting (SLM), there is a portion of initial powder that does not melt and it can be recycled to ensure the economic and environmental viability of the process. In previous research, we demonstrated the morphological, chemical and microstructural change suffered by 17-4 PH stainless steel powder after reusing it in a SLM manufacturing process. In this work, the properties of 17-4 PH stainless steel parts, printed from powder in different recycling states (virgin powder (P0) and 20 times reused powder (P20)), were evaluated, in order to establish good recycling procedures and optimise the SLM process performance. Analyses of the properties revealed a slight decrease in roughness and pore size with powder recycling. The external porosity of the samples is similar in both powder states; however, internal porosity decreases by increasing the number of reuse cycles. Regarding the microstructural analysis, a slight increase in the γ-phase is observed with the powder recycling, which leads to a slight increase in ductility and decrease in hardness of the samples. Therefore, it is concluded that the 17-4 PH powder recycling process in SLM manufacturing is adequate and recommended to ensure the economic and environmental viability of the process without adversely affecting the properties of the parts.
PB ELSEVIER
SN 2238-7854
LK https://hdl.handle.net/10612/17818
UL https://hdl.handle.net/10612/17818
NO Giganto, S., Martínez-Pellitero, S., Barreiro, J. & Zapico, P. (2022). Influence of 17-4 PH stainless steel powder recycling on properties of SLM additive manufactured parts. Journal of Materials Research and Technology, 16, 1647–1658. https://doi.org/10.1016/j.jmrt.2021.12.089
DS BULERIA. Repositorio Institucional de la Universidad de León
RD Jul 11, 2024