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Corrosion and Oxidation Behavior of a Fe-Al-Mn-C Duplex Alloy

Dipartimento di Meccanica, Politecnico di Milano, via La Masa 1, Milano 20156, Italy
F.G.S., Via Garzoneri 11, Treviglio (BG) 24047, Italy
Author to whom correspondence should be addressed.
Materials 2019, 12(16), 2572;
Received: 1 July 2019 / Revised: 2 August 2019 / Accepted: 9 August 2019 / Published: 12 August 2019
(This article belongs to the Special Issue Advances in Duplex Stainless Steels)
PDF [11022 KB, uploaded 12 August 2019]


The low-density steels represent a topic of great interest within the scientific world because of the great demand from the steel market of increasingly lighter materials, also featured by an optimal mix of the mechanical properties. In this work, the corrosion and hot oxidation resistance of a Fe-15%Mn-9.5%Al-6.5%Ni-1%Cr-0.43%C were analyzed and related to the microstructural features. The material behavior was analyzed both in the as-cast and in the heat-treated state. For the corrosion test, the experimental plan was fulfilled using four different concentrations of HCl and four temperatures. In the case of hot oxidation resistance, the exposure time and the temperature effects were evaluated. The corrosion resistance in HCl was comparable to the stainless steel, and the iso-corrosion curves showed excellent resistance of the 1300 °C solution-treated material, especially at low temperatures, but it is also good at high temperatures due to the hot oxidation. View Full-Text
Keywords: corrosion; Fe-Mn-Al-Ni steel; light steel; potentiodynamic curves corrosion; Fe-Mn-Al-Ni steel; light steel; potentiodynamic curves

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Barella, S.; Ciuffini, A.F.; Gruttadauria, A.; Mapelli, C.; Mombelli, D.; Longaretti, E. Corrosion and Oxidation Behavior of a Fe-Al-Mn-C Duplex Alloy. Materials 2019, 12, 2572.

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