Corrosion Behavior of FeAl and Fe3Al Based Fe-Al-C Alloys in Sulfuric Acid

• Autorzy: Silva A. P. , Brito P. P. , Martins N.

Identyfikatory

DOI

10.24425/afe.2022.140228

• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

iron aluminides; microstructure; mechanical properties; corrosion resistance

PL

glinki żelaza; mikrostruktura; właściwości mechaniczne; odporność na korozję

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2022
• Tom: Vol. 22, iss. 2
• Strony: 77--82
• Opis fizyczny: Bibliogr. 13 poz., il., rys., tab., wykr.

Twórcy

autor

Silva A. P.

• PUC Minas, Brazil

autor

Brito P. P.

• PUC Minas, Brazil

autor

Martins N.

• PUC Minas, Brazil

Bibliografia

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