TY - JOUR
T1 - Nanoindentation and Corrosion Behaviour of 410 Stainless Steel Fabricated Via Additive Manufacturing
AU - Lesufi, Miltia
AU - Akinwamide, Samuel Olukayode
AU - Makoana, Washington
AU - Tshabalala, Lerato
AU - Olubambi, Peter Apata
N1 - Funding Information:
Open Access funding provided by Aalto University. The authors are grateful to National Research Foundation for funding and the Council for Scientific and Industrial Research in South Africa for granting us access to their research facilities.
Publisher Copyright:
© 2022, The Author(s).
PY - 2023/3
Y1 - 2023/3
N2 - This study investigates the microstructural, nanomechanical, and corrosion behaviour of different sections of 410 steel fabricated via directed energy deposition technique. The morphology exhibited by the longitudinal and transverse sections of the specimens was examined under a scanning electron microscope (SEM), while micro-computed tomography technique (micro-CT) was used for examination of the internal structure of the specimens. Nanomechanical properties were assessed using a nanoindenter, while potentiodynamic polarization technique was adopted to investigate the corrosion resistance of the specimens in a chloride environment. The SEM micrographs revealed minimal pores in the specimens which confirmed the improved density in the layer-by-layer built specimen. Micro-CT images confirmed the presence of tiny pores in the specimens sectioned from the top layer of the 410 stainless steel rod in comparison with the middle- and bottom-sectioned specimens. The corrosion and post-corrosion analyses confirmed that the top specimen exhibits the least corrosion resistance in comparison with the other specimens.
AB - This study investigates the microstructural, nanomechanical, and corrosion behaviour of different sections of 410 steel fabricated via directed energy deposition technique. The morphology exhibited by the longitudinal and transverse sections of the specimens was examined under a scanning electron microscope (SEM), while micro-computed tomography technique (micro-CT) was used for examination of the internal structure of the specimens. Nanomechanical properties were assessed using a nanoindenter, while potentiodynamic polarization technique was adopted to investigate the corrosion resistance of the specimens in a chloride environment. The SEM micrographs revealed minimal pores in the specimens which confirmed the improved density in the layer-by-layer built specimen. Micro-CT images confirmed the presence of tiny pores in the specimens sectioned from the top layer of the 410 stainless steel rod in comparison with the middle- and bottom-sectioned specimens. The corrosion and post-corrosion analyses confirmed that the top specimen exhibits the least corrosion resistance in comparison with the other specimens.
KW - 410 Stainless steel
KW - Additive manufacturing
KW - Micro-CT imaging
KW - Nanoindentation
KW - Potentiodynamic polarization
UR - http://www.scopus.com/inward/record.url?scp=85138244921&partnerID=8YFLogxK
U2 - 10.1007/s12666-022-02736-w
DO - 10.1007/s12666-022-02736-w
M3 - Article
AN - SCOPUS:85138244921
SN - 0972-2815
VL - 76
SP - 695
EP - 702
JO - Transactions of the Indian Institute of Metals
JF - Transactions of the Indian Institute of Metals
IS - 3
ER -