Effect of Al content on the high-temperature oxidation behavior of 18Cr–Al–Si ferritic heat-resistant stainless steel
The effect of Al content on the high-temperature oxidation (800 and 900 °C) of 18Cr–Al–Si FHSS (ferritic heat-resistant stainless steel) for up to 180 h in air was investigated via the isothermal oxidation method. The oxidation kinetic curves followed a parabolic law. A higher Al content reduced the...
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doaj-dfc9c2977b6646ff8dc9deb8d111572c2021-03-19T07:26:37ZengElsevierJournal of Materials Research and Technology2238-78542021-03-011117301740Effect of Al content on the high-temperature oxidation behavior of 18Cr–Al–Si ferritic heat-resistant stainless steelYingbo Zhang0Dening Zou1Yunong Li2Yu Wang3Wei Zhang4Xiaoming Zhang5School of Metallurgy and Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China; Shaanxi Special Equipment Inspection and Testing Institute, Xi'an, 710048, ChinaSchool of Metallurgy and Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China; Corresponding author.School of Metallurgy and Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, ChinaShaanxi Special Equipment Inspection and Testing Institute, Xi'an, 710048, China; School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, 710049, ChinaTechnology Center, Taiyuan Iron and Steel (Group) Co.Ltd., Taiyuan, 030003, ChinaShaanxi Special Equipment Inspection and Testing Institute, Xi'an, 710048, ChinaThe effect of Al content on the high-temperature oxidation (800 and 900 °C) of 18Cr–Al–Si FHSS (ferritic heat-resistant stainless steel) for up to 180 h in air was investigated via the isothermal oxidation method. The oxidation kinetic curves followed a parabolic law. A higher Al content reduced the oxidation rate and improved the oxidation resistance and also promoted the formation of a denser and more continuous Al2O3 film during the early oxidation stages, which provided an effective barrier that hindered the diffusion of oxygen into the matrix. The oxide films that formed on the 0.63Al FHSS and 1.06Al FHSS were composed of spinel MnCr2O4 in the outer layer, MnO and Cr2O3 in the middle layer, and Al2O3 and SiO2 in the inner layer. The middle layer of 0.63Al FHSS also contained a small amount of Fe2O3. The oxidation mechanism was also discussed based on oxidation kinetics, morphological observations, and phase analysis of oxide films.http://www.sciencedirect.com/science/article/pii/S2238785421001502Al content18Cr–Al–Si FHSSHigh temperature oxidationOxide film |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Yingbo Zhang Dening Zou Yunong Li Yu Wang Wei Zhang Xiaoming Zhang |
spellingShingle |
Yingbo Zhang Dening Zou Yunong Li Yu Wang Wei Zhang Xiaoming Zhang Effect of Al content on the high-temperature oxidation behavior of 18Cr–Al–Si ferritic heat-resistant stainless steel Journal of Materials Research and Technology Al content 18Cr–Al–Si FHSS High temperature oxidation Oxide film |
author_facet |
Yingbo Zhang Dening Zou Yunong Li Yu Wang Wei Zhang Xiaoming Zhang |
author_sort |
Yingbo Zhang |
title |
Effect of Al content on the high-temperature oxidation behavior of 18Cr–Al–Si ferritic heat-resistant stainless steel |
title_short |
Effect of Al content on the high-temperature oxidation behavior of 18Cr–Al–Si ferritic heat-resistant stainless steel |
title_full |
Effect of Al content on the high-temperature oxidation behavior of 18Cr–Al–Si ferritic heat-resistant stainless steel |
title_fullStr |
Effect of Al content on the high-temperature oxidation behavior of 18Cr–Al–Si ferritic heat-resistant stainless steel |
title_full_unstemmed |
Effect of Al content on the high-temperature oxidation behavior of 18Cr–Al–Si ferritic heat-resistant stainless steel |
title_sort |
effect of al content on the high-temperature oxidation behavior of 18cr–al–si ferritic heat-resistant stainless steel |
publisher |
Elsevier |
series |
Journal of Materials Research and Technology |
issn |
2238-7854 |
publishDate |
2021-03-01 |
description |
The effect of Al content on the high-temperature oxidation (800 and 900 °C) of 18Cr–Al–Si FHSS (ferritic heat-resistant stainless steel) for up to 180 h in air was investigated via the isothermal oxidation method. The oxidation kinetic curves followed a parabolic law. A higher Al content reduced the oxidation rate and improved the oxidation resistance and also promoted the formation of a denser and more continuous Al2O3 film during the early oxidation stages, which provided an effective barrier that hindered the diffusion of oxygen into the matrix. The oxide films that formed on the 0.63Al FHSS and 1.06Al FHSS were composed of spinel MnCr2O4 in the outer layer, MnO and Cr2O3 in the middle layer, and Al2O3 and SiO2 in the inner layer. The middle layer of 0.63Al FHSS also contained a small amount of Fe2O3. The oxidation mechanism was also discussed based on oxidation kinetics, morphological observations, and phase analysis of oxide films. |
topic |
Al content 18Cr–Al–Si FHSS High temperature oxidation Oxide film |
url |
http://www.sciencedirect.com/science/article/pii/S2238785421001502 |
work_keys_str_mv |
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