Oxidation behavior of 2.25Cr-1Mo steel with prior tempering at different temperatures

R. K. Singh Raman; J. B. Gnanamoorthy; S. K. Roy

doi:10.1007/BF00665257

Oxidation behavior of 2.25Cr-1Mo steel with prior tempering at different temperatures

R. K. Singh Raman, J. B. Gnanamoorthy, S. K. Roy

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

7 Citations (Scopus)

Abstract

The oxidation behavior of a normalized 2.25Cr-1Mo steel tempered previously for 10 hr at different temperatures between 873 and 1023 K has been studied up to a maximum duration of 1000 hr in air at 773-973 K. The oxidation resistance of the steel was found to decrease significantly with the temperature of tempering. Tempering of this steel is reported to cause microstructural changes involving precipitation of Cr as carbides and a decrease in the effective (free) Cr contents, that could influence the oxidation resistance of the Cr-containing alloys. Relative compositions across the thickness of the oxide scales, as analyzed by SEM/EDX and SIMS, suggest that a less Cr-rich (and less protective) and thicker scale on the steel formed because previous tempering caused extensive depletion of free Cr.

Original language	English
Pages (from-to)	21-36
Number of pages	16
Journal	Oxidation of Metals
Volume	40
Issue number	1-2
DOIs	https://doi.org/10.1007/BF00665257
Publication status	Published - 1 Aug 1993
Externally published	Yes

Keywords

ε-carbide
bainite
cementite
MC
normalizing
secondary-phase precipitation
SIMS depth profile
tempering

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10.1007/BF00665257

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title = "Oxidation behavior of 2.25Cr-1Mo steel with prior tempering at different temperatures",

abstract = "The oxidation behavior of a normalized 2.25Cr-1Mo steel tempered previously for 10 hr at different temperatures between 873 and 1023 K has been studied up to a maximum duration of 1000 hr in air at 773-973 K. The oxidation resistance of the steel was found to decrease significantly with the temperature of tempering. Tempering of this steel is reported to cause microstructural changes involving precipitation of Cr as carbides and a decrease in the effective (free) Cr contents, that could influence the oxidation resistance of the Cr-containing alloys. Relative compositions across the thickness of the oxide scales, as analyzed by SEM/EDX and SIMS, suggest that a less Cr-rich (and less protective) and thicker scale on the steel formed because previous tempering caused extensive depletion of free Cr.",

keywords = "ε-carbide, bainite, cementite, MC, normalizing, secondary-phase precipitation, SIMS depth profile, tempering",

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T1 - Oxidation behavior of 2.25Cr-1Mo steel with prior tempering at different temperatures

AU - Singh Raman, R. K.

AU - Gnanamoorthy, J. B.

AU - Roy, S. K.

PY - 1993/8/1

Y1 - 1993/8/1

N2 - The oxidation behavior of a normalized 2.25Cr-1Mo steel tempered previously for 10 hr at different temperatures between 873 and 1023 K has been studied up to a maximum duration of 1000 hr in air at 773-973 K. The oxidation resistance of the steel was found to decrease significantly with the temperature of tempering. Tempering of this steel is reported to cause microstructural changes involving precipitation of Cr as carbides and a decrease in the effective (free) Cr contents, that could influence the oxidation resistance of the Cr-containing alloys. Relative compositions across the thickness of the oxide scales, as analyzed by SEM/EDX and SIMS, suggest that a less Cr-rich (and less protective) and thicker scale on the steel formed because previous tempering caused extensive depletion of free Cr.

AB - The oxidation behavior of a normalized 2.25Cr-1Mo steel tempered previously for 10 hr at different temperatures between 873 and 1023 K has been studied up to a maximum duration of 1000 hr in air at 773-973 K. The oxidation resistance of the steel was found to decrease significantly with the temperature of tempering. Tempering of this steel is reported to cause microstructural changes involving precipitation of Cr as carbides and a decrease in the effective (free) Cr contents, that could influence the oxidation resistance of the Cr-containing alloys. Relative compositions across the thickness of the oxide scales, as analyzed by SEM/EDX and SIMS, suggest that a less Cr-rich (and less protective) and thicker scale on the steel formed because previous tempering caused extensive depletion of free Cr.

KW - ε-carbide

KW - bainite

KW - cementite

KW - MC

KW - normalizing

KW - secondary-phase precipitation

KW - SIMS depth profile

KW - tempering

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DO - 10.1007/BF00665257

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JO - Oxidation of Metals

JF - Oxidation of Metals

IS - 1-2

ER -

Oxidation behavior of 2.25Cr-1Mo steel with prior tempering at different temperatures

Abstract

Keywords

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