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

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

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 (12–15M 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	n p j Materials Degradation
Volume	2
Issue number	1
Early online date	7 Mar 2018
DOIs	https://doi.org/10.1038/s41529-018-0030-9
Publication status	Published - 7 Mar 2018

Keywords

Duplex Stainless Steel
Scanning electron microscope
Effects of strain
Pitting corrosion
Stress Corrosion Cracking
Corrosion

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10.1038/s41529-018-0030-9

Performance Characterisation of Duplex Stainless Steel in Nuclear Waste Storage Environment
Ornek, C. (Author), Engelberg, D. (Supervisor), 1 Aug 2016
Student thesis: Phd

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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 (12–15M 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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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 - 2018/3/7

Y1 - 2018/3/7

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 (12–15M 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 (12–15M 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.

KW - Duplex Stainless Steel

KW - Scanning electron microscope

KW - Effects of strain

KW - Pitting corrosion

KW - Stress Corrosion Cracking

KW - Corrosion

U2 - 10.1038/s41529-018-0030-9

DO - 10.1038/s41529-018-0030-9

M3 - Article

SN - 2397-2106

VL - 2

JO - n p j Materials Degradation

JF - n p j Materials Degradation

IS - 1

M1 - 10

ER -

Time-dependent In-situ Measurement of Atmospheric Corrosion Rates of Duplex Stainless Steel Wires

Abstract

Keywords

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Student theses

Performance Characterisation of Duplex Stainless Steel in Nuclear Waste Storage Environment

Cite this