Oxidation behavior of super-bainitic 3Cr steel

B. A. Pint; J. A. Haynes

Oxidation behavior of super-bainitic 3Cr steel

Research output: Contribution to journal › Conference article › peer-review

2 Scopus citations

Abstract

A new 3Cr-1.6W super-bainitic steel, Grade 315, was developed with superior creep properties, enabling use at higher temperature than current 1-2%Cr steels. However, with only 3%Cr, this material may experience corrosion problems when exposed at higher (600°-650°C) temperatures. The oxidation behavior of this new material was compared to other Fe-Cr alloys in steam, wet air, CO₂-H₂O and fireside corrosion. The oxidation performance of Gr.315 was consistent with its Cr content and with that of Fe-2.25Cr (Grade 22). In order to improve oxidation resistance in the presence of water vapor, thin aluminide coatings on Gr.315 and Gr.22 were evaluated at 550°-800°C. Early coating failures compared to similar coatings on 9Cr substrates suggested that the alloy Cr content has a significant effect on coating life as has been observed in model Fe-Al-Cr alloys and that different coating compositions need to be evaluated for this steel.

Original language	English
Journal	NACE - International Corrosion Conference Series
State	Published - 2011
Event	Corrosion 2011 - Houston, TX, United States Duration: Mar 13 2011 → Mar 17 2011

Keywords

Bainitic steel
CO
Coating
High temperature oxidation
Steam

Cite this

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title = "Oxidation behavior of super-bainitic 3Cr steel",

abstract = "A new 3Cr-1.6W super-bainitic steel, Grade 315, was developed with superior creep properties, enabling use at higher temperature than current 1-2%Cr steels. However, with only 3%Cr, this material may experience corrosion problems when exposed at higher (600°-650°C) temperatures. The oxidation behavior of this new material was compared to other Fe-Cr alloys in steam, wet air, CO2-H2O and fireside corrosion. The oxidation performance of Gr.315 was consistent with its Cr content and with that of Fe-2.25Cr (Grade 22). In order to improve oxidation resistance in the presence of water vapor, thin aluminide coatings on Gr.315 and Gr.22 were evaluated at 550°-800°C. Early coating failures compared to similar coatings on 9Cr substrates suggested that the alloy Cr content has a significant effect on coating life as has been observed in model Fe-Al-Cr alloys and that different coating compositions need to be evaluated for this steel.",

keywords = "Bainitic steel, CO, Coating, High temperature oxidation, Steam",

author = "Pint, {B. A.} and Haynes, {J. A.}",

year = "2011",

language = "English",

journal = "NACE - International Corrosion Conference Series",

issn = "0361-4409",

note = "Corrosion 2011 ; Conference date: 13-03-2011 Through 17-03-2011",

}

TY - JOUR

T1 - Oxidation behavior of super-bainitic 3Cr steel

AU - Pint, B. A.

AU - Haynes, J. A.

PY - 2011

Y1 - 2011

N2 - A new 3Cr-1.6W super-bainitic steel, Grade 315, was developed with superior creep properties, enabling use at higher temperature than current 1-2%Cr steels. However, with only 3%Cr, this material may experience corrosion problems when exposed at higher (600°-650°C) temperatures. The oxidation behavior of this new material was compared to other Fe-Cr alloys in steam, wet air, CO2-H2O and fireside corrosion. The oxidation performance of Gr.315 was consistent with its Cr content and with that of Fe-2.25Cr (Grade 22). In order to improve oxidation resistance in the presence of water vapor, thin aluminide coatings on Gr.315 and Gr.22 were evaluated at 550°-800°C. Early coating failures compared to similar coatings on 9Cr substrates suggested that the alloy Cr content has a significant effect on coating life as has been observed in model Fe-Al-Cr alloys and that different coating compositions need to be evaluated for this steel.

AB - A new 3Cr-1.6W super-bainitic steel, Grade 315, was developed with superior creep properties, enabling use at higher temperature than current 1-2%Cr steels. However, with only 3%Cr, this material may experience corrosion problems when exposed at higher (600°-650°C) temperatures. The oxidation behavior of this new material was compared to other Fe-Cr alloys in steam, wet air, CO2-H2O and fireside corrosion. The oxidation performance of Gr.315 was consistent with its Cr content and with that of Fe-2.25Cr (Grade 22). In order to improve oxidation resistance in the presence of water vapor, thin aluminide coatings on Gr.315 and Gr.22 were evaluated at 550°-800°C. Early coating failures compared to similar coatings on 9Cr substrates suggested that the alloy Cr content has a significant effect on coating life as has been observed in model Fe-Al-Cr alloys and that different coating compositions need to be evaluated for this steel.

KW - Bainitic steel

KW - CO

KW - Coating

KW - High temperature oxidation

KW - Steam

UR - http://www.scopus.com/inward/record.url?scp=79959988011&partnerID=8YFLogxK

M3 - Conference article

AN - SCOPUS:79959988011

SN - 0361-4409

JO - NACE - International Corrosion Conference Series

JF - NACE - International Corrosion Conference Series

T2 - Corrosion 2011

Y2 - 13 March 2011 through 17 March 2011

ER -

Oxidation behavior of super-bainitic 3Cr steel

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