journal article·2024-02Open access

Corrosion behavior assessment of an Al-Cu alloy manufactured via laser powder bed fusion

Sergio Lorenzi, Alessandro Carrozza, Marina Cabrini, Lorenzo Nani, Francesco Andreatta, Eero Virtanen, Tommaso Tirelli, Tommaso Pastore

Corrosion Science· Volume 227

Abstract

Additively manufactured Aluminum-Copper alloys are attracting interest because of their high tensile strength. Nevertheless, the presence of Cu strongly affects the corrosion performances. In this work, the corrosion behavior of an innovative laser powder bed fusion-processed 2139 alloy was investigated, and its corrosion performances were compared to the well-consolidated AlSi10Mg alloy, as well as the parent wrought alloy. Electrochemical, Kelvin probe microscopy and intergranular corrosion tests were performed. The unique corrosion morphology at melt pool boundaries are presented and discussed alongside with the effect of surface finishing and heat treatments.
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Research context

OpenAlex topics: Additive Manufacturing Materials and Processes · High Entropy Alloys Studies · Additive Manufacturing and 3D Printing Technologies

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