A study on the sinterability and properties of binder jet 3D printed Invar36 powder blends

A. Lores, N. Azurmendi, I. Agote, B. Barthel, C. Aumund-Kopp

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Resumen

Binder Jetting, despite it its mainly directed to high-productivity additive manufacturing purposes, it also offers a high accuracy fabrication route for less common metal alloys or for special purpose applications. In the present work, an exploration of the printing process and sinterability of different invar36 alloy powder bimodal mixtures is performed. Invar36 is a Fe-Ni alloy which presents near zero CTE below its curie temperature (279°C) and it is widely used for high precision instrumentation in space environment. MIM grade <22µm powder and fine <5 µm Invar36 commercial powders were used as raw materials. Printing process parameters were selected based on a previous parameter optimization study [1], and printed test samples were sintered in a vacuum atmosphere. Sintered parts were characterized and the CTE was measured. The results of the study showed that bimodal Invar36 powders can be properly tailored and manufactured for tuning the part densification to desired values.

Idioma originalInglés
Título de la publicación alojadaEuro PM2021 Congress Proceedings
EditorialEuropean Powder Metallurgy Association (EPMA)
ISBN (versión digital)9781899072545
EstadoPublicada - 2021
Evento2021 European Powder Metallurgy Congress and Exhibition, Euro PM 2021 - Virtual, Online
Duración: 18 oct 202122 oct 2021

Serie de la publicación

NombreEuro PM2021 Congress Proceedings

Conferencia

Conferencia2021 European Powder Metallurgy Congress and Exhibition, Euro PM 2021
CiudadVirtual, Online
Período18/10/2122/10/21

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