Microstructural Evolution and Oxidation Behavior of Fe-4Cr-6Ti Ferritic Alloy with Fe₂Ti Laves Phase Precipitates

• Autorzy: Demirel Ahmet , Çetin Emre Can , Karakuş Ali , Ataş Mehmet Şahin , Yildirim Mehmet

Identyfikatory

DOI

10.24425/amm.2022.139672

• Języki publikacji: EN

Abstrakty

EN

The microstructural properties and hardness of a model ternary Fe-4Cr-6Ti ferritic alloy aged at 800°C for 8, 16 and 24 h are investigated in detail. Fine Fe₂Ti Laves phase particles precipitate in the α-Fe (ferrite) matrix phase after solutionizing and subsequent aging treatments. The size and amount of Fe₂Ti precipitates gradually increase with increasing aging time. The magnetic measurements of the aged samples confirm the variations in the microstructural properties including the volume fraction of the constituent phases, and Ti content of the α-Fe matrix phase. The mean Vickers microhardness value also increases from 203.5 to 238.4 with increasing aging time from 8 to 24 h. In addition, the cyclic oxidation behavior of 24 h aged sample, which contains maximum amount of Fe₂Ti precipitates, is also investigated in detail. X-ray diffraction analysis reveals that scale product is α-Fe₂O₃ (hematite). Significant scale spallation and void formation is observed on the surfaces of 24 h aged Fe-4Cr-6Ti sample oxidized at 500°C.

Słowa kluczowe

EN

ferritic alloy; microstructure; precipitation hardening; laves phase; oxidation

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2022
• Tom: Vol. 67, iss. 3
• Strony: 827--836
• Opis fizyczny: Bibliogr. 63 poz., fot., rys., tab., wzory

Twórcy

autor

Demirel Ahmet

• Konya Technical University, Faculty of Engineering and Natural Sciences, Department of Metallurgical and Materials Engineering, Konya, Turkey

• https://orcid.org/0000-0002-1015-3284

autor

Çetin Emre Can

• Konya Technical University, Faculty of Engineering and Natural Sciences, Department of Metallurgical and Materials Engineering, Konya, Turkey

• https://orcid.org/0000-0002-7890-2261

autor

Karakuş Ali

• Konya Technical University, Faculty of Engineering and Natural Sciences, Department of Metallurgical and Materials Engineering, Konya, Turkey

• https://orcid.org/0000-0001-8011-0215

autor

Ataş Mehmet Şahin

• Konya Technical University, Faculty of Engineering and Natural Sciences, Department of Metallurgical and Materials Engineering, Konya, Turkey

• https://orcid.org/0000-0001-8361-5913

autor

Yildirim Mehmet

• Konya Technical University, Faculty of Engineering and Natural Sciences, Department of Metallurgical and Materials Engineering, Konya, Turkey

• https://orcid.org/0000-0003-4768-4537

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Uwagi

1. This paper was prepared from graduation project of Ahmet Demirel, Emre Can Cetin and Ali Karakus.

2. Opracowanie rekordu ze środków MNiSW, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2024).