The oxidation of Fe3Al-(0, 2, 4, 6%)Cr alloys at 1000 °C

D. B. Lee; G. Y. Kim; J. G. Kim

doi:10.1016/S0921-5093(02)00112-0

The oxidation of Fe₃Al-(0, 2, 4, 6%)Cr alloys at 1000 °C

D. B. Lee, G. Y. Kim, J. G. Kim

Department of Advanced Materials Science and Engineering

Sungkyunkwan University

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

45 Scopus citations

Abstract

Thermomechanically treated Fe₃Al-(0, 2, 4, 6at.%) Cr alloys were isothermally oxidized at 1000 °C in air, and their oxidation characteristics were studied using thermogravimetric analyzer, X-ray diffractometer, scanning electron microscope, electron probe microanalyzer, and TEM/EDS. It was found that Cr decreased the oxidation resistance of Fe₃Al alloys to a certain extent. The oxide scales that formed on the unalloyed Fe₃Al alloys consisted primarily of α-Al₂O₃ containing a small percentage of dissolved iron ions. Less than 1% of dissolved chromium ions was additionally present in the oxide scale formed on the Fe₃Al-Cr alloys. An Al-free, Fe-enriched zone was formed beneath the oxide scale, owing to Al consumption to form the oxide scale. The oxide scale on all alloys had poor adherence.

Original language	English
Pages (from-to)	109-114
Number of pages	6
Journal	Materials Science and Engineering: A
Volume	339
Issue number	1-2
DOIs	https://doi.org/10.1016/S0921-5093(02)00112-0
State	Published - 2 Jan 2003

Keywords

Chromium
Iron aluminides based on FeAl
Oxidation

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10.1016/S0921-5093(02)00112-0

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title = "The oxidation of Fe3Al-(0, 2, 4, 6\%)Cr alloys at 1000 °C",

abstract = "Thermomechanically treated Fe3Al-(0, 2, 4, 6at.\%) Cr alloys were isothermally oxidized at 1000 °C in air, and their oxidation characteristics were studied using thermogravimetric analyzer, X-ray diffractometer, scanning electron microscope, electron probe microanalyzer, and TEM/EDS. It was found that Cr decreased the oxidation resistance of Fe3Al alloys to a certain extent. The oxide scales that formed on the unalloyed Fe3Al alloys consisted primarily of α-Al2O3 containing a small percentage of dissolved iron ions. Less than 1\% of dissolved chromium ions was additionally present in the oxide scale formed on the Fe3Al-Cr alloys. An Al-free, Fe-enriched zone was formed beneath the oxide scale, owing to Al consumption to form the oxide scale. The oxide scale on all alloys had poor adherence.",

keywords = "Chromium, Iron aluminides based on FeAl, Oxidation",

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T1 - The oxidation of Fe3Al-(0, 2, 4, 6%)Cr alloys at 1000 °C

AU - Lee, D. B.

AU - Kim, G. Y.

AU - Kim, J. G.

PY - 2003/1/2

Y1 - 2003/1/2

N2 - Thermomechanically treated Fe3Al-(0, 2, 4, 6at.%) Cr alloys were isothermally oxidized at 1000 °C in air, and their oxidation characteristics were studied using thermogravimetric analyzer, X-ray diffractometer, scanning electron microscope, electron probe microanalyzer, and TEM/EDS. It was found that Cr decreased the oxidation resistance of Fe3Al alloys to a certain extent. The oxide scales that formed on the unalloyed Fe3Al alloys consisted primarily of α-Al2O3 containing a small percentage of dissolved iron ions. Less than 1% of dissolved chromium ions was additionally present in the oxide scale formed on the Fe3Al-Cr alloys. An Al-free, Fe-enriched zone was formed beneath the oxide scale, owing to Al consumption to form the oxide scale. The oxide scale on all alloys had poor adherence.

AB - Thermomechanically treated Fe3Al-(0, 2, 4, 6at.%) Cr alloys were isothermally oxidized at 1000 °C in air, and their oxidation characteristics were studied using thermogravimetric analyzer, X-ray diffractometer, scanning electron microscope, electron probe microanalyzer, and TEM/EDS. It was found that Cr decreased the oxidation resistance of Fe3Al alloys to a certain extent. The oxide scales that formed on the unalloyed Fe3Al alloys consisted primarily of α-Al2O3 containing a small percentage of dissolved iron ions. Less than 1% of dissolved chromium ions was additionally present in the oxide scale formed on the Fe3Al-Cr alloys. An Al-free, Fe-enriched zone was formed beneath the oxide scale, owing to Al consumption to form the oxide scale. The oxide scale on all alloys had poor adherence.

KW - Chromium

KW - Iron aluminides based on FeAl

KW - Oxidation

UR - https://www.scopus.com/pages/publications/0037413788

U2 - 10.1016/S0921-5093(02)00112-0

DO - 10.1016/S0921-5093(02)00112-0

M3 - Article

AN - SCOPUS:0037413788

SN - 0921-5093

VL - 339

SP - 109

EP - 114

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

IS - 1-2

ER -

The oxidation of Fe₃Al-(0, 2, 4, 6%)Cr alloys at 1000 °C

Abstract

Keywords

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