Experimental investigations on microstructural features and corrosion properties of wire arc additive manufactured 2509 super duplex stainless steel

Volume 19 No 3 (2021)

Manish Kumar, Abhishek Kumar and Prakash Kumar

DOI: 10.48047/nq.2021.19.3.NQ21048

Abstract

This study investigates the microstructural characteristics and corrosion behavior of wire arc additive manufactured (WAAM) 2509 super duplex stainless steel (SDSS). The WAAM process was employed to fabricate 2509 SDSS specimens, and their microstructure, phase composition, and corrosion properties were analyzed using various techniques. The results revealed a predominantly austenitic-ferritic microstructure with some variations in phase balance across the build height. The corrosion resistance of the WAAM 2509 SDSS was found to be comparable to that of wrought material, with some localized variations attributed to microstructural inhomogeneities. This research provides valuable insights into the potential of WAAM for producing 2509 SDSS components with acceptable microstructural and corrosion properties.

Keywords

WAAM 2509 SDSS, corrosion resistance, Additive manufacturing (AM), Super duplex stainless steels (SDSS)

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