Corrosion of additively manufactured alloys: A review

G. Sander*, J. Tan, P. Balan, O. Gharbi, D. R. Feenstra, L. Singer, S. Thomas, R. G. Kelly, J. R. Scully, N. Birbilis

*Corresponding author for this work

    Research output: Contribution to journalReview articlepeer-review

    221 Citations (Scopus)

    Abstract

    Additive manufacturing (AM), often termed 3D printing, has recently emerged as a mainstream means of producing metallic components from a variety of metallic alloys. The numerous benefits of AM include net shape manufacturing, efficient use of material, suitability to low volume production runs, and the ability to explore alloy compositions not previously accessible to conventional casting. The process of AM, which is nominally performed using laser (or electron) based local melting, has a definitive role in the resultant alloy microstructure. Herein, the corrosion of alloys prepared by AM using laser and electronbased methods, relating the corrosion performance to the microstructural features influenced by AM processing, are reviewed. Such features include unique porosity, grain structures, dislocation networks, residual stress, solute segregation, and surface roughness. Correlations between reported results and deficiencies in present understanding are highlighted.

    Original languageEnglish
    Pages (from-to)1318-1350
    Number of pages33
    JournalCorrosion
    Volume74
    Issue number12
    DOIs
    Publication statusPublished - Dec 2018

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