A detailed electrochemical analysis of sensitized AISI 410 martensitic stainless steel

In the present work, the effect of sensitization heat treatment on the intergranular corrosion (IGC) behavior of AISI 410 martensitic stainless steel was investigated using potentiodynamic electrochemical impedance spectroscopy (PDEIS) in conjunction with conventional methods including acid etching...

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Main Authors: Khashayar Morshed-Behbahani, Pooria Najafisayar, Nika Zakerin, Mahmoud Pakshir
Format: Article
Language:English
Published: IOP Publishing 2021-01-01
Series:Materials Research Express
Subjects:
Online Access:https://doi.org/10.1088/2053-1591/abfa4a
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author Khashayar Morshed-Behbahani
Pooria Najafisayar
Nika Zakerin
Mahmoud Pakshir
author_facet Khashayar Morshed-Behbahani
Pooria Najafisayar
Nika Zakerin
Mahmoud Pakshir
author_sort Khashayar Morshed-Behbahani
collection DOAJ
description In the present work, the effect of sensitization heat treatment on the intergranular corrosion (IGC) behavior of AISI 410 martensitic stainless steel was investigated using potentiodynamic electrochemical impedance spectroscopy (PDEIS) in conjunction with conventional methods including acid etching test, anodic potentiodynamic polarization, double-loop electrochemical potentiodynamic reactivation (DLEPR) and electrochemical noise (EN). Microstructural studies by scanning electron microscopy revealed that increasing tempering time up to 2h would be followed by more severe localized attack, but desensitization state attributed to specimens undergone prolonged tempering cannot be interpreted based on the standard test method. Susceptibility to IGC via DLEPR experiments indicates differences in the degree of sensitization (DOS) of specimens with varying tempering time, revealing a healing effect arising from prolonged tempering. The EN results elucidated the alloy tendency for active dissolution, but no obvious correlation can be established between the EN results and IGC behavior. The PDEIS data clarified that the charge transfer resistance values related to the AC responses in the middle of transpassive potential region can be utilized to investigate and compare the IGC susceptibility of the alloy. Moreover, the surface morphology of corroded samples under such experimental conditions can be used to qualitatively compare the severity of intergranular attack.
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spelling doaj.art-6cf6687e7bf54587ad81f62f0a4e67f92023-08-09T16:00:53ZengIOP PublishingMaterials Research Express2053-15912021-01-018505650110.1088/2053-1591/abfa4aA detailed electrochemical analysis of sensitized AISI 410 martensitic stainless steelKhashayar Morshed-Behbahani0https://orcid.org/0000-0002-1577-6552Pooria Najafisayar1https://orcid.org/0000-0002-0725-7760Nika Zakerin2https://orcid.org/0000-0002-0093-0828Mahmoud Pakshir3Department of Materials Science and Engineering, School of Engineering, Shiraz University , 7134851154, Shiraz, IranDepartment of Materials Science and Engineering, School of Engineering, Shiraz University , 7134851154, Shiraz, IranDepartment of Materials Science and Engineering, School of Engineering, Shiraz University , 7134851154, Shiraz, IranDepartment of Materials Science and Engineering, School of Engineering, Shiraz University , 7134851154, Shiraz, IranIn the present work, the effect of sensitization heat treatment on the intergranular corrosion (IGC) behavior of AISI 410 martensitic stainless steel was investigated using potentiodynamic electrochemical impedance spectroscopy (PDEIS) in conjunction with conventional methods including acid etching test, anodic potentiodynamic polarization, double-loop electrochemical potentiodynamic reactivation (DLEPR) and electrochemical noise (EN). Microstructural studies by scanning electron microscopy revealed that increasing tempering time up to 2h would be followed by more severe localized attack, but desensitization state attributed to specimens undergone prolonged tempering cannot be interpreted based on the standard test method. Susceptibility to IGC via DLEPR experiments indicates differences in the degree of sensitization (DOS) of specimens with varying tempering time, revealing a healing effect arising from prolonged tempering. The EN results elucidated the alloy tendency for active dissolution, but no obvious correlation can be established between the EN results and IGC behavior. The PDEIS data clarified that the charge transfer resistance values related to the AC responses in the middle of transpassive potential region can be utilized to investigate and compare the IGC susceptibility of the alloy. Moreover, the surface morphology of corroded samples under such experimental conditions can be used to qualitatively compare the severity of intergranular attack.https://doi.org/10.1088/2053-1591/abfa4aStainless steelTempering heat treatmentIntergranular corrosionEISPolarizationElectrochemical Noise
spellingShingle Khashayar Morshed-Behbahani
Pooria Najafisayar
Nika Zakerin
Mahmoud Pakshir
A detailed electrochemical analysis of sensitized AISI 410 martensitic stainless steel
Materials Research Express
Stainless steel
Tempering heat treatment
Intergranular corrosion
EIS
Polarization
Electrochemical Noise
title A detailed electrochemical analysis of sensitized AISI 410 martensitic stainless steel
title_full A detailed electrochemical analysis of sensitized AISI 410 martensitic stainless steel
title_fullStr A detailed electrochemical analysis of sensitized AISI 410 martensitic stainless steel
title_full_unstemmed A detailed electrochemical analysis of sensitized AISI 410 martensitic stainless steel
title_short A detailed electrochemical analysis of sensitized AISI 410 martensitic stainless steel
title_sort detailed electrochemical analysis of sensitized aisi 410 martensitic stainless steel
topic Stainless steel
Tempering heat treatment
Intergranular corrosion
EIS
Polarization
Electrochemical Noise
url https://doi.org/10.1088/2053-1591/abfa4a
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