Oxidation behavior of ODS Fe-Cr alloys

B. A. Pint; I. G. Wright

doi:10.1007/s11085-004-3200-9

Oxidation behavior of ODS Fe-Cr alloys

B. A. Pint, I. G. Wright

Materials Science and Technology Div

Research output: Contribution to journal › Article › peer-review

22 Scopus citations

Abstract

Four experimental oxide dispersion strengthened (ODS)Fe-(13-14 at. %)Cr ferritic alloys were exposed for up to 10,000 hr at 700-1100 °C in air and in air with 10vol.% water vapor. Their performance has been compared to other commercial ODS and stainless steel alloys. At 700-800°C, the reaction rates in air were very low for all of the ODS Fe-Cr alloys compared to stainless steels. At 900°C, a Y₂O₃ dispersion showed a distinct benefit in improving oxidation resistance compared to an Al₂O ₃ dispersion or no addition in the stainless steels. However, for the Fe-13 %Cr alloy, breakaway oxidation occurred after 7,000 hr at 900°C in air. Exposures in 10 % water vapor at 800 and 900°C and in air at 1000 and 1100°C showed increased attack for this class of alloys. Because of the relatively low Cr reservoirs in these alloys, their maximum operating temperature in air will be below 900°C.

Original language	English
Pages (from-to)	193-213
Number of pages	21
Journal	Oxidation of Metals
Volume	63
Issue number	3-4
DOIs	https://doi.org/10.1007/s11085-004-3200-9
State	Published - Apr 2005

Funding

The research was sponsored by the Office of Fusion Energy Sciences, U. S. Department of Energy (DOE), under contract DE-AC05-00OR22725 with UT-Battelle, LLC. G. Garner, L. Walker and H. Longmire assisted with the experimental work. P. J. Maziasz, M. P. Brady and P. F. Tortor-elli at ORNL provided comments on the manuscript.

Funders	Funder number
U.S. Department of Energy	DE-AC05-00OR22725
Fusion Energy Sciences

Keywords

Ferritic steel
Oxidation
Oxide dispersion strengthened
Reactive element effect
Water vapor

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1007/s11085-004-3200-9

Cite this

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abstract = "Four experimental oxide dispersion strengthened (ODS)Fe-(13-14 at. %)Cr ferritic alloys were exposed for up to 10,000 hr at 700-1100 °C in air and in air with 10vol.% water vapor. Their performance has been compared to other commercial ODS and stainless steel alloys. At 700-800°C, the reaction rates in air were very low for all of the ODS Fe-Cr alloys compared to stainless steels. At 900°C, a Y2O3 dispersion showed a distinct benefit in improving oxidation resistance compared to an Al2O 3 dispersion or no addition in the stainless steels. However, for the Fe-13 %Cr alloy, breakaway oxidation occurred after 7,000 hr at 900°C in air. Exposures in 10 % water vapor at 800 and 900°C and in air at 1000 and 1100°C showed increased attack for this class of alloys. Because of the relatively low Cr reservoirs in these alloys, their maximum operating temperature in air will be below 900°C.",

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AU - Wright, I. G.

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N2 - Four experimental oxide dispersion strengthened (ODS)Fe-(13-14 at. %)Cr ferritic alloys were exposed for up to 10,000 hr at 700-1100 °C in air and in air with 10vol.% water vapor. Their performance has been compared to other commercial ODS and stainless steel alloys. At 700-800°C, the reaction rates in air were very low for all of the ODS Fe-Cr alloys compared to stainless steels. At 900°C, a Y2O3 dispersion showed a distinct benefit in improving oxidation resistance compared to an Al2O 3 dispersion or no addition in the stainless steels. However, for the Fe-13 %Cr alloy, breakaway oxidation occurred after 7,000 hr at 900°C in air. Exposures in 10 % water vapor at 800 and 900°C and in air at 1000 and 1100°C showed increased attack for this class of alloys. Because of the relatively low Cr reservoirs in these alloys, their maximum operating temperature in air will be below 900°C.

AB - Four experimental oxide dispersion strengthened (ODS)Fe-(13-14 at. %)Cr ferritic alloys were exposed for up to 10,000 hr at 700-1100 °C in air and in air with 10vol.% water vapor. Their performance has been compared to other commercial ODS and stainless steel alloys. At 700-800°C, the reaction rates in air were very low for all of the ODS Fe-Cr alloys compared to stainless steels. At 900°C, a Y2O3 dispersion showed a distinct benefit in improving oxidation resistance compared to an Al2O 3 dispersion or no addition in the stainless steels. However, for the Fe-13 %Cr alloy, breakaway oxidation occurred after 7,000 hr at 900°C in air. Exposures in 10 % water vapor at 800 and 900°C and in air at 1000 and 1100°C showed increased attack for this class of alloys. Because of the relatively low Cr reservoirs in these alloys, their maximum operating temperature in air will be below 900°C.

KW - Ferritic steel

KW - Oxidation

KW - Oxide dispersion strengthened

KW - Reactive element effect

KW - Water vapor

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Oxidation behavior of ODS Fe-Cr alloys

Abstract

Funding

Keywords

UN SDGs

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