Search results

Filters

  • Journals
  • Authors
  • Keywords
  • Date
  • Type

Search results

Number of results: 1
items per page: 25 50 75
Sort by:
Download PDF Download RIS Download Bibtex

Abstract

Iron aluminides are iron-aluminum alloys that have excellent resistance to oxidation at high temperatures with low density, high resistance/weight ratio and a low manufacturing cost. Due to its characteristics, these alloys are presented as an option to replace stainless steels in certain applications. This works intends report the casting process and subsequent analyses involving microstructure, mechanical properties, and corrosion resistance of two Fe-Al-C alloys (Fe-11wt%Al and Fe-25wt%Al, containing 0.31-0.37%C), which were prepared in an induction furnace and poured in a permanent mold. Samples of these alloys were characterized and presented elevated hardness values of 37 HRC (alloy Fe-11wt%Al) and 49.6HRC (alloy Fe-25wt%Al) and microstructure with aluminides type Fe3Al and FeAl and also carbides type K. The Fe-11wt%Al alloy exhibited superior resistance to uniform corrosion, although both Fe-Al-C alloys exhibited significantly higher corrosion rates compared to a binary iron aluminide in 0.5M H2SO4 containing naturally dissolved oxygen.
Go to article

Bibliography

[1] Zamanzade, M., Barnoush, A. & Motz, C. (2016). A review on the properties of iron aluminide intermetallics. Crystals. 6(10), 1-29. DOI: 10.3390/cryst6010010.
[2] Stoloff, N.S. (1998). Iron aluminides: present status and future prospects. Materials Science and Engineering: A. 258(1-2), 1-14. DOI: 10.1016/S0921-5093(98)00909-5.
[3] Cinca, N., Lima, C.R.C. & Guilemany, J.M. (2013). An overview of intermetallics research and application: Status of thermal spray coatings. Journal of Materials Research and Technology. 2(1), 75-86. DOI: 10.1016/j.jmrt.2013.03.013.
[4] Palm, M., Stein, F. & Dehm, G. (2019). Iron Aluminides. Annual Review of Materials Research. 49, 297-326. DOI: 10.1146/annurev-matsci-070218-125911.
[5] Deevi, S.C. & Sikka, V.K. (1996). Nickel and iron aluminides: an overview on properties, processing, and applications. Intermetallics. 4(5) 357-375. DOI: 10.1016/0966-9795(95)00056-9.
[6] Shankar Rao, V., Baligidad, R. G. & Raja, V. S. (2002). Effect of carbon on corrosion behaviour of Fe3Al intermetallics in 0.5N sulphuric acid. Corrosion Science. 44, 521-533. DOI: 10.1016/S0010-938X(01)00084-1.
[7] Shankar Rao, V. (2005). Repassivation behaviour and surface analysis of Fe3Al based iron aluminide in 0.25M H2SO4. Corrosion Science. 47, 183-194. DOI: 10.1016/j.corsci.2004.05.014.
[8] Nigam, A.K., Balasubramaniam, R., Bhargava, S. & Baligidad, R.G. (2006). Electrochemical impedance spectroscopy and cyclic voltammetry study of carbon-alloyed iron aluminides in sulfuric acid. Corrosion Science. 48(7), 1666-1678. DOI: 10.1016/j.corsci.2010.05.006.
[9] Schneider, A., Falat, L., Sauthoff, G. & Frommeyer, G. (2005). Microstructures and mechanical properties of Fe3Al-based Fe-Al-C alloys. Intermetallics. 13(12), 1322-1331. DOI: 10.1016/j.intermet.2005.01.0.
[10] Brito, P., Pinto, H., Klaus, M., Genzel, C. & Kaysser-Pyzalla, A. (2010). Internal stresses and textures of nanostructured alumina scales growing on polycrystalline Fe3Al alloy. Powder Diffraction. 25(2), 114-118. DOI: 10.1154/1.3402764
[11] Brito, P., Schuller, E., Silva, J., Campos, T.R., Araújo, C.R. & Carneiro, J.R. (2017). Electrochemical corrosion behaviour of (100), (110) and (111) Fe3Al single crystals in sulphuric acid. Corrosion Science. 126, 366-373. DOI: 10.1016/j.corsci.2017.05.029.
[12] Brito, P.P., Carvalho Filho, C.T. & Oliveira, G.A. (2020). Electrochemical corrosion behavior of iron aluminides in sulfuric acid. Materials Science Forum. 1012, 395-400. DOI: 10.4028/www.scientific.net/MSF.1012.395.
[13] Hernández-Hernández, M., Liu, H. B., Alvarez-Ramirez, J. & Espinosa-Medina, M. A. (2017). Corrosion behavior of Fe-40at.%Al-Based intermetallic in 0.25M H2SO4 solution. Journal of Materials Engineering and Performance. 26, 5983-5996. DOI: 10.1007/s11665-017-3036-5.

Go to article

Authors and Affiliations

A.P. Silva
1
ORCID: ORCID
P.P. Brito
1
N. Martins
1

  1. PUC Minas, Brazil

This page uses 'cookies'. Learn more