Insights into the influence of cold rolling and accelerated isothermal aging on microstructure evolution, corrosion performance, σ precipitation and its kinetics in a low molybdenum Fe-21Cr-5Mn-1.5Ni alloy

Tushar R. Dandekar; Raoof Koya K S; Jitendra Chavhan; Rajik Shah; Rajesh K. Khatirkar

doi:10.1016/j.mtla.2023.101814

Insights into the influence of cold rolling and accelerated isothermal aging on microstructure evolution, corrosion performance, σ precipitation and its kinetics in a low molybdenum Fe-21Cr-5Mn-1.5Ni alloy

Tushar R. Dandekar, Raoof Koya K S, Jitendra Chavhan, Rajik Shah, Rajesh K. Khatirkar

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

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Abstract

In the present work, effect of cold rolling and accelerated isothermal aging at 800 °C on the microstructural changes and corrosion behavior in a low molybdenum Fe-21Cr-5Mn-1.5Ni alloy has been investigated. Scanning electron microscopy, energy dispersive spectroscopy, X-ray diffraction, and electron backscattered diffraction (EBSD) were used to investigate the changes in microstructure and σ precipitation, while the corrosion behavior was studied using anodic polarization tests and electrochemical impedance spectroscopy (EIS). The corrosion resistance followed the given sequence – Solution annealed (undeformed) > 50% cold rolled + aged 72 h > solution annealed (undeformed) + aged 72 h > 50% cold rolled. Corrosion products were mainly oxides of iron and chromium.

Original language	English
Article number	101814
Number of pages	12
Journal	Materialia
Volume	30
Early online date	23 Jun 2023
DOIs	https://doi.org/10.1016/j.mtla.2023.101814
Publication status	Published - 1 Aug 2023

Keywords

aging
corrosion
EBSD
Fe-Cr-Mn-Ni Alloy
σ precipitation: SIM

Access to Document

10.1016/j.mtla.2023.101814

MTLA-D-23-00186_finalAccepted author manuscript (Post-print), 3.15 MBLicence: CC BY-NC-ND

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title = "Insights into the influence of cold rolling and accelerated isothermal aging on microstructure evolution, corrosion performance, σ precipitation and its kinetics in a low molybdenum Fe-21Cr-5Mn-1.5Ni alloy",

abstract = "In the present work, effect of cold rolling and accelerated isothermal aging at 800 °C on the microstructural changes and corrosion behavior in a low molybdenum Fe-21Cr-5Mn-1.5Ni alloy has been investigated. Scanning electron microscopy, energy dispersive spectroscopy, X-ray diffraction, and electron backscattered diffraction (EBSD) were used to investigate the changes in microstructure and σ precipitation, while the corrosion behavior was studied using anodic polarization tests and electrochemical impedance spectroscopy (EIS). The corrosion resistance followed the given sequence – Solution annealed (undeformed) > 50% cold rolled + aged 72 h > solution annealed (undeformed) + aged 72 h > 50% cold rolled. Corrosion products were mainly oxides of iron and chromium.",

keywords = "aging, corrosion, EBSD, Fe-Cr-Mn-Ni Alloy, σ precipitation: SIM",

author = "Dandekar, {Tushar R.} and {Koya K S}, Raoof and Jitendra Chavhan and Rajik Shah and Khatirkar, {Rajesh K.}",

note = "Funding Information: The authors are thankful to Director, VNIT Nagpur for providing the necessary facilities and constant encouragement to publish this paper. The authors would also like to acknowledge DST-FIST Cold Rolling Facility at Department of Metallurgical and Materials Engineering, VNIT Nagpur for cold rolling work. Publisher Copyright: {\textcopyright} 2023",

year = "2023",

month = aug,

day = "1",

doi = "10.1016/j.mtla.2023.101814",

language = "English",

volume = "30",

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publisher = "Elsevier",

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Insights into the influence of cold rolling and accelerated isothermal aging on microstructure evolution, corrosion performance, σ precipitation and its kinetics in a low molybdenum Fe-21Cr-5Mn-1.5Ni alloy. / Dandekar, Tushar R.; Koya K S, Raoof; Chavhan, Jitendra et al.
In: Materialia, Vol. 30, 101814, 01.08.2023.

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

TY - JOUR

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AU - Dandekar, Tushar R.

AU - Koya K S, Raoof

AU - Chavhan, Jitendra

AU - Shah, Rajik

AU - Khatirkar, Rajesh K.

N1 - Funding Information: The authors are thankful to Director, VNIT Nagpur for providing the necessary facilities and constant encouragement to publish this paper. The authors would also like to acknowledge DST-FIST Cold Rolling Facility at Department of Metallurgical and Materials Engineering, VNIT Nagpur for cold rolling work. Publisher Copyright: © 2023

PY - 2023/8/1

Y1 - 2023/8/1

N2 - In the present work, effect of cold rolling and accelerated isothermal aging at 800 °C on the microstructural changes and corrosion behavior in a low molybdenum Fe-21Cr-5Mn-1.5Ni alloy has been investigated. Scanning electron microscopy, energy dispersive spectroscopy, X-ray diffraction, and electron backscattered diffraction (EBSD) were used to investigate the changes in microstructure and σ precipitation, while the corrosion behavior was studied using anodic polarization tests and electrochemical impedance spectroscopy (EIS). The corrosion resistance followed the given sequence – Solution annealed (undeformed) > 50% cold rolled + aged 72 h > solution annealed (undeformed) + aged 72 h > 50% cold rolled. Corrosion products were mainly oxides of iron and chromium.

AB - In the present work, effect of cold rolling and accelerated isothermal aging at 800 °C on the microstructural changes and corrosion behavior in a low molybdenum Fe-21Cr-5Mn-1.5Ni alloy has been investigated. Scanning electron microscopy, energy dispersive spectroscopy, X-ray diffraction, and electron backscattered diffraction (EBSD) were used to investigate the changes in microstructure and σ precipitation, while the corrosion behavior was studied using anodic polarization tests and electrochemical impedance spectroscopy (EIS). The corrosion resistance followed the given sequence – Solution annealed (undeformed) > 50% cold rolled + aged 72 h > solution annealed (undeformed) + aged 72 h > 50% cold rolled. Corrosion products were mainly oxides of iron and chromium.

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