Corrosion performance of feedstock modified – Additively manufactured stainless steel

Feedstock modified powders were produced by ball-milling commercial 316 L stainless steel powder and 1 wt% additive (Cerium oxide–CeO2, lanthanum (III) nitrate hexahydrate–La(NO3)30.6 H2O and chromium nitride–CrN). Laser-powder bed fusion (L-PBF) was performed on modified feedstock using 180, 200, a...

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Bibliographic Details
Published inCorrosion science Vol. 209; p. 110724
Main Authors Vukkum, V.B., Ozdemir, Furkan, Storck, Steven, Gupta, R.K.
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.12.2022
Subjects
Additive manufacturing
Corrosion
Feedstock
Laser- Powder bed fusion
Microstructure
Stainless steel
Laser- Powder bed fusion
Feedstock
Additive manufacturing
Corrosion
Microstructure
Stainless steel
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Summary:Feedstock modified powders were produced by ball-milling commercial 316 L stainless steel powder and 1 wt% additive (Cerium oxide–CeO2, lanthanum (III) nitrate hexahydrate–La(NO3)30.6 H2O and chromium nitride–CrN). Laser-powder bed fusion (L-PBF) was performed on modified feedstock using 180, 200, and 220 W laser power. The influence of additives on microstructure and corrosion performance was investigated on the as-printed and ground/polished conditions of L-PBF-316 L-additive. The corrosion performance was dependent on the type of the additives. The microstructure of the alloys was correlated with the observed corrosion behavior. •Feedstock modification of 316 L SS with 1 wt% CeO2, La(NO3)30.6 H2O and CrN additives.•Laser Powder bed fusion of feedstock modified 316 L Stainless Steel powder.•Effect of additives on surface roughness and porosity as a function of laser power.•Influence of additives on microstructure and corrosion performance of L-PBF-316 L.•Corrosion mechanism of L-PBF-316 L-additive concerning the respective microstructure.
ISSN:0010-938X
1879-0496
DOI:10.1016/j.corsci.2022.110724