Time-dependent in situ measurement of atmospheric corrosion rates of duplex stainless steel wires

Cem Örnek; Fabien Léonard; Samuel A. McDonald; Anuj Prajapati; Philip J. Withers; Dirk L. Engelberg

doi:10.1038/s41529-018-0030-9

Time-dependent in situ measurement of atmospheric corrosion rates of duplex stainless steel wires

Cem Örnek^*, Fabien Léonard, Samuel A. McDonald, Anuj Prajapati, Philip J. Withers, Dirk L. Engelberg

^*Corresponding author for this work

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

39 Citations (Scopus)

Abstract

Corrosion rates of strained grade UNS S32202 (2202) and UNS S32205 (2205) duplex stainless steel wires have been measured, in situ, using time-lapse X-ray computed tomography. Exposures to chloride-containing (MgCl₂) atmospheric environments at 50 °C (12–15 M Cl⁻ and pH ~5) with different mechanical elastic and elastic/plastic loads were carried out over a period of 21 months. The corrosion rates for grade 2202 increased over time, showing selective dissolution with shallow corrosion sites, coalescing along the surface of the wire. Corrosion rates of grade 2205 decreased over time, showing both selective and pitting corrosion with more localised attack, growing preferentially in depth. The nucleation of stress corrosion cracking was observed in both wires.

Original language	English
Article number	10
Journal	npj Materials Degradation
Volume	2
Issue number	1
DOIs	https://doi.org/10.1038/s41529-018-0030-9
Publication status	Published - Dec 2018
Externally published	Yes

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Publisher Copyright:
© 2018, The Author(s).

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title = "Time-dependent in situ measurement of atmospheric corrosion rates of duplex stainless steel wires",

abstract = "Corrosion rates of strained grade UNS S32202 (2202) and UNS S32205 (2205) duplex stainless steel wires have been measured, in situ, using time-lapse X-ray computed tomography. Exposures to chloride-containing (MgCl2) atmospheric environments at 50 °C (12–15 M Cl− and pH \textasciitilde{}5) with different mechanical elastic and elastic/plastic loads were carried out over a period of 21 months. The corrosion rates for grade 2202 increased over time, showing selective dissolution with shallow corrosion sites, coalescing along the surface of the wire. Corrosion rates of grade 2205 decreased over time, showing both selective and pitting corrosion with more localised attack, growing preferentially in depth. The nucleation of stress corrosion cracking was observed in both wires.",

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doi = "10.1038/s41529-018-0030-9",

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T1 - Time-dependent in situ measurement of atmospheric corrosion rates of duplex stainless steel wires

AU - Örnek, Cem

AU - Léonard, Fabien

AU - McDonald, Samuel A.

AU - Prajapati, Anuj

AU - Withers, Philip J.

AU - Engelberg, Dirk L.

PY - 2018/12

Y1 - 2018/12

N2 - Corrosion rates of strained grade UNS S32202 (2202) and UNS S32205 (2205) duplex stainless steel wires have been measured, in situ, using time-lapse X-ray computed tomography. Exposures to chloride-containing (MgCl2) atmospheric environments at 50 °C (12–15 M Cl− and pH ~5) with different mechanical elastic and elastic/plastic loads were carried out over a period of 21 months. The corrosion rates for grade 2202 increased over time, showing selective dissolution with shallow corrosion sites, coalescing along the surface of the wire. Corrosion rates of grade 2205 decreased over time, showing both selective and pitting corrosion with more localised attack, growing preferentially in depth. The nucleation of stress corrosion cracking was observed in both wires.

AB - Corrosion rates of strained grade UNS S32202 (2202) and UNS S32205 (2205) duplex stainless steel wires have been measured, in situ, using time-lapse X-ray computed tomography. Exposures to chloride-containing (MgCl2) atmospheric environments at 50 °C (12–15 M Cl− and pH ~5) with different mechanical elastic and elastic/plastic loads were carried out over a period of 21 months. The corrosion rates for grade 2202 increased over time, showing selective dissolution with shallow corrosion sites, coalescing along the surface of the wire. Corrosion rates of grade 2205 decreased over time, showing both selective and pitting corrosion with more localised attack, growing preferentially in depth. The nucleation of stress corrosion cracking was observed in both wires.

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DO - 10.1038/s41529-018-0030-9

M3 - Article

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JO - npj Materials Degradation

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Time-dependent in situ measurement of atmospheric corrosion rates of duplex stainless steel wires

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