Effects of silicon and manganese content on the oxidation behavior of FeMnSiCrNi alloys and the correlation between Mn-depleted zone, surface roughness and oxidation resistance
| Autor: | R. Silva, Bruno Xavier de Freitas, Carlos Alberto Della Rovere, Artur Mariano de Sousa Malafaia, Luís Fernando Pedrosa Rabelo, João Gabriel da Cruz Passos |
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| Rok vydání: | 2021 |
| Předmět: |
Austenite
Materials science Silicon General Chemical Engineering Alloy Metallurgy technology industry and agriculture Iron oxide Oxide chemistry.chemical_element General Chemistry Manganese engineering.material equipment and supplies Corrosion chemistry.chemical_compound chemistry engineering General Materials Science Internal oxidation |
| Zdroj: | Corrosion Science. 191:109724 |
| ISSN: | 0010-938X |
| Popis: | Manganese and silicon effect on high-temperature cyclic oxidation was evaluated in three austenitic shape-memory FeMnSiCrNi alloys, including a novel high-silicon alloy (Fe-17Mn-8Si-10Cr-4Ni-NbC). Mass variation, Mn-depleted zone and metal/oxide interface roughness analyses were used to study the oxidation behavior. Renewed mass gain after spallation was observed for Fe12Mn5Si and Fe17Mn5Si alloys, while Fe17Mn8Si continuously lost mass, associated with low metal/oxide interface roughness and the ferritizing potential of Si. Low manganese availability led Fe12Mn5Si to suffer internal oxidation and iron oxide formation. Here, neither increasing silicon nor reducing manganese increased cyclic oxidation resistance of the alloys. |
| Databáze: | OpenAIRE |
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