Effect of nanoparticle additivation on the microstructure and microhardness of oxide dispersion strengthened steels produced by laser powder bed fusion and directed energy deposition

C Doñate-Buendia,R Streubel,P Kürnsteiner,M.B Wilms,F Stern,J Tenkamp,E Bruder,S Barcikowski,B Gault,K Durst,J.H Schleifenbaum,F Walther,B Gökce

doi:10.1016/j.procir.2020.09.009

Effect of nanoparticle additivation on the microstructure and microhardness of oxide dispersion strengthened steels produced by laser powder bed fusion and directed energy deposition

C Doñate-Buendia, R Streubel + Show 11 more

Open Access

https://doi.org/10.1016/j.procir.2020.09.009

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Journal: Procedia CIRP	Publication Date: Jan 1, 2020
Citations: 17	License type: cc-by-nc-nd

Affiliation: University of Duisburg-Essen, Max-Planck-Institut für Eisenforschung, RWTH Aachen University, TU Dortmund University, Technical University of Darmstadt

#Laser Powder Bed Fusion #Directed Energy Deposition + Show 8 more

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Abstract

In this contribution, the effect of nanoparticle additivation on the microstructure and microhardness of oxide dispersion strengthened steels (ODS) manufactured by laser powder bed fusion (L-PBF) and directed energy deposition (DED) additive manufacturing (AM) is studied. The powder composites are made of micrometer-sized iron-chromium-alloy based powder which are homogenously decorated with Y2O3 nanoparticles synthesized by pulsed laser fragmentation in water. Consolidated by L-PBF and DED, an enhanced microhardness of the AM-built ODS sample is found. This increase is related to the significant microstructural differences found between the differently processed samples.

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