A low-cost, low-density, and corrosion resistant AlFeMnSi compositionally complex alloy

Abstract A compositionally complex alloy was designed, consisting of equiatomic concentrations of four low-cost commodity elements (Al, Fe, Mn, and Si). The alloy was characterized using scanning electron microscopy and energy-dispersive X-ray spectroscopy. The corrosion of the AlFeMnSi alloy, as ev...

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Autores principales:	S. P. O’Brien, J. Christudasjustus, L. Esteves, S. Vijayan, J. R. Jinschek, N. Birbilis, R. K. Gupta
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Materials of engineering and construction. Mechanics of materials TA401-492
Acceso en línea:	https://doaj.org/article/9b7e263a24dc4acc8a17c44c4d22b1e4
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spelling	oai:doaj.org-article:9b7e263a24dc4acc8a17c44c4d22b1e42021-12-02T16:30:46ZA low-cost, low-density, and corrosion resistant AlFeMnSi compositionally complex alloy10.1038/s41529-021-00158-52397-2106https://doaj.org/article/9b7e263a24dc4acc8a17c44c4d22b1e42021-03-01T00:00:00Zhttps://doi.org/10.1038/s41529-021-00158-5https://doaj.org/toc/2397-2106Abstract A compositionally complex alloy was designed, consisting of equiatomic concentrations of four low-cost commodity elements (Al, Fe, Mn, and Si). The alloy was characterized using scanning electron microscopy and energy-dispersive X-ray spectroscopy. The corrosion of the AlFeMnSi alloy, as evaluated using potentiodynamic polarization tests and electrochemical impedance spectroscopy in 0.6 M NaCl solution, was comparable with that of stainless steel (SS) 304L. Detailed X-ray photoelectron spectroscopy analysis was carried out, including the determination of high-resolution spectra and surface sputtering. In addition, scanning transmission electron microscopy was also used to study the surface film(s) developed after constant immersion. The AlFeMnSi alloy exhibited a unique form of ‘passivity’ that arises from the development of a silicon-rich surface film from dynamic incongruent dissolution.S. P. O’BrienJ. ChristudasjustusL. EstevesS. VijayanJ. R. JinschekN. BirbilisR. K. GuptaNature PortfolioarticleMaterials of engineering and construction. Mechanics of materialsTA401-492ENnpj Materials Degradation, Vol 5, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Materials of engineering and construction. Mechanics of materials TA401-492
spellingShingle	Materials of engineering and construction. Mechanics of materials TA401-492 S. P. O’Brien J. Christudasjustus L. Esteves S. Vijayan J. R. Jinschek N. Birbilis R. K. Gupta A low-cost, low-density, and corrosion resistant AlFeMnSi compositionally complex alloy
description	Abstract A compositionally complex alloy was designed, consisting of equiatomic concentrations of four low-cost commodity elements (Al, Fe, Mn, and Si). The alloy was characterized using scanning electron microscopy and energy-dispersive X-ray spectroscopy. The corrosion of the AlFeMnSi alloy, as evaluated using potentiodynamic polarization tests and electrochemical impedance spectroscopy in 0.6 M NaCl solution, was comparable with that of stainless steel (SS) 304L. Detailed X-ray photoelectron spectroscopy analysis was carried out, including the determination of high-resolution spectra and surface sputtering. In addition, scanning transmission electron microscopy was also used to study the surface film(s) developed after constant immersion. The AlFeMnSi alloy exhibited a unique form of ‘passivity’ that arises from the development of a silicon-rich surface film from dynamic incongruent dissolution.
format	article
author	S. P. O’Brien J. Christudasjustus L. Esteves S. Vijayan J. R. Jinschek N. Birbilis R. K. Gupta
author_facet	S. P. O’Brien J. Christudasjustus L. Esteves S. Vijayan J. R. Jinschek N. Birbilis R. K. Gupta
author_sort	S. P. O’Brien
title	A low-cost, low-density, and corrosion resistant AlFeMnSi compositionally complex alloy
title_short	A low-cost, low-density, and corrosion resistant AlFeMnSi compositionally complex alloy
title_full	A low-cost, low-density, and corrosion resistant AlFeMnSi compositionally complex alloy
title_fullStr	A low-cost, low-density, and corrosion resistant AlFeMnSi compositionally complex alloy
title_full_unstemmed	A low-cost, low-density, and corrosion resistant AlFeMnSi compositionally complex alloy
title_sort	low-cost, low-density, and corrosion resistant alfemnsi compositionally complex alloy
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/9b7e263a24dc4acc8a17c44c4d22b1e4
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A low-cost, low-density, and corrosion resistant AlFeMnSi compositionally complex alloy

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