Impact of powder reusability on batch repeatability of Ti6Al4V ELI for PBF-LB industrial production
Artikel i vetenskaplig tidskrift, 2023

In powder bed fusion laser beam (PBF-LB), powder reusability remains key to keeping cost-effectivity as well as sustainability. In this study, highly sensitive Ti6Al4V ELI powder typically used for medical and aerospace applications is studied. Powder properties of new and reused powders after 10 build cycles subjected to variations such as morphology, particle size distribution (PSD), chemical composition and flowability were analysed. The flow rate using Carney flowmeter increased from 6.8 s to 12 s. Oxygen content slightly increased from 0.11% to 0.12%. The dimensional deviations are measured in six builds of eight samples spread through the build plate. The density of the cubes does not show relevant differences in density (from 99.6% to 99.9%), only the last batch exhibits slightly lower density than the previous builds. Studied properties for the powder and builds are maintained throughout the experiment, demonstrating repeatability of industrial production of metal parts.

repeatability

industrial AM

Powder reusability

Ti6Al4V ELI

powder bed fusion laser beam (PBF-LB)

batch production

grade 23

Författare

Laura Cordova Gonzalez

Universiteit Twente

Chalmers, Industri- och materialvetenskap, Material och tillverkning

Cindy Sithole

Universiteit Twente

Eric Macía Rodríguez

Universidad Carlos III de Madrid

Ian Gibson

Universiteit Twente

Monica Campos Gomez

Universidad Carlos III de Madrid

Powder Metallurgy

0032-5899 (ISSN) 1743-2901 (eISSN)

Vol. 66 2 129-138

Ämneskategorier

Keramteknik

Materialkemi

Metallurgi och metalliska material

DOI

10.1080/00325899.2022.2133357

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Senast uppdaterat

2023-07-05