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Corrosion-Fatigue Performance of 3D-Printed (L-PBF) AlSi10Mg
RISE Research Institutes of Sweden, Material och produktion, Korrosion.ORCID-id: 0000-0003-0611-3324
RISE Research Institutes of Sweden, Material och produktion, Korrosion.ORCID-id: 0000-0002-6847-5446
RISE Research Institutes of Sweden, Material och produktion, Tillverkningsprocesser.ORCID-id: 0000-0002-9411-3756
Vise andre og tillknytning
2023 (engelsk)Inngår i: MATERIALS, Vol. 16, nr 17, artikkel-id 5964Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Additive manufacturing (AM) allows for optimized part design, reducing weight compared to conventional manufacturing. However, the microstructure, surface state, distribution, and size of internal defects (e.g., porosities) are very closely related to the AM fabrication process and post-treatment operations. All these parameters can have a strong impact on the corrosion and fatigue performance of the final component. Thus, the fatigue-corrosion behavior of the 3D-printed (L-PBF) AlSi10Mg aluminum alloy has been investigated. The influence of load sequence (sequential vs. combined) was explored using Wohler diagrams. Surface roughness and defects in AM materials were examined, and surface treatment was applied to improve surface quality. The machined specimens showed the highest fatigue properties regardless of load sequence by improving both the roughness and removing the contour layer containing the highest density of defect. The impact of corrosion was more pronounced for as-printed specimens as slightly deeper pits were formed, which lowered the fatigue-corrosion life. As discussed, the corrosion, fatigue and fatigue-corrosion mechanisms were strongly related to the local microstructure and existing defects in the AM sample.

sted, utgiver, år, opplag, sider
MDPI , 2023. Vol. 16, nr 17, artikkel-id 5964
Emneord [en]
atmospheric corrosion; fatigue; additive manufacturing; 3D printing; aluminum alloys; AlSi10Mg
HSV kategori
Identifikatorer
URN: urn:nbn:se:ri:diva-70148DOI: 10.3390/ma16175964OAI: oai:DiVA.org:ri-70148DiVA, id: diva2:1830206
Merknad

This research received no external funding.

Tilgjengelig fra: 2024-01-22 Laget: 2024-01-22 Sist oppdatert: 2024-05-21bibliografisk kontrollert

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