@article{e832718deda3436d820f68ded5fca42d,
title = "On the pitting corrosion of 2205 duplex stainless steel produced by laser powder bed fusion additive manufacturing in the as-built and post-processed conditions",
abstract = "The effects of additive manufacturing (AM) and post-AM heat treatment on microstructural characteristics and pitting corrosion of 2205 duplex stainless steel were studied and benchmarked against its conventionally hot-rolled counterpart. The rapid solidification and possible loss of N associated with AM resulted in a non-equilibrium microstructure dominated by δ-ferrite with a minor fraction of austenite and abundant Cr2N precipitation. Atom probe tomography revealed that no depletion of Cr occurs around intragranular Cr2N. A deduction in Cr was observed adjacent to intergranular Cr2N particles, however, Cr content in these regions remained above the critical value of 13 wt%. Post-AM heat treatment was effective in restoring the duplex microstructure while dissolving the Cr2N precipitates. Although the pitting resistance in the as-built AM specimen was lower than that of its hot-rolled counterpart, it was fully recovered after post-AM heat treatment.",
keywords = "Additive manufacturing, Duplex stainless steel, Heat treatment, Microstructure, Pitting corrosion",
author = "Nima Haghdadi and Majid Laleh and Hansheng Chen and Zibin Chen and Carina Ledermueller and Xiaozhou Liao and Simon Ringer and Sophie Primig",
note = "Funding Information: Funding from the AUSMURI program administered by the Australia's Department of Industry, Science, Energy and Resources is acknowledged. The authors acknowledge the facilities, as well as the scientific and technical support of the Electron Microscope Unit (EMU) at UNSW Sydney (part of the Mark Wainwright Centre) and Sydney Microscopy & Microanalysis (SMM) at the University of Sydney (a core research facility). Both the EMU and SMM are nodes of Microscopy Australia. The authors thank Dr. Xiaopeng Li and Mr. Qian Liu at UNSW Sydney for their kind help with 3D printing of materials. SP is supported under the Australian Research Council{\textquoteright}s DECRA (project number DE180100440) and the UNSW Scientia Fellowship schemes. Funding Information: Funding from the AUSMURI program administered by the Australia's Department of Industry, Science, Energy and Resources is acknowledged. The authors acknowledge the facilities, as well as the scientific and technical support of the Electron Microscope Unit (EMU) at UNSW Sydney (part of the Mark Wainwright Centre) and Sydney Microscopy & Microanalysis (SMM) at the University of Sydney (a core research facility). Both the EMU and SMM are nodes of Microscopy Australia. The authors thank Dr. Xiaopeng Li and Mr. Qian Liu at UNSW Sydney for their kind help with 3D printing of materials. SP is supported under the Australian Research Council's DECRA (project number DE180100440) and the UNSW Scientia Fellowship schemes. Publisher Copyright: {\textcopyright} 2021 The Author(s)",
year = "2021",
month = dec,
day = "15",
doi = "10.1016/j.matdes.2021.110260",
language = "English",
volume = "212",
journal = "International Journal of Materials in Engineering Applications",
issn = "0264-1275",
publisher = "Elsevier BV",
}