Correlation between active/inactive (Ca, Mg, Al)-Ox-Sy inclusions and localised marine corrosion of EH36 steels

Correlation between active/inactive (Ca, Mg, Al)-Ox-Sy inclusions and localised marine corrosion of EH36 steels

The correlation between (Ca, Mg, Al)-Ox-Sy inclusions and localised marine corrosion of EH36 steels was investigated. According to their ability to induce localised corrosion, the inclusions were categorised as ‘active’ or ‘inactive’, and the main difference between them was the ratio of CaO/Al2O3....

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Main Authors: Yuhang Wang, Xian Zhang, Lin Cheng, Jing Liu, Tingping Hou, Kaiming Wu
Format: Article
Language:English
Published: Elsevier 2021-07-01
Series:Journal of Materials Research and Technology
Subjects:
Low-alloy steel
SEM
Inclusion
Anodic dissolution
Pitting corrosion
Online Access:http://www.sciencedirect.com/science/article/pii/S2238785421005858
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spelling doaj-7e2cba2d04ac4c36889ad8ad11428cbc2021-07-23T04:49:48ZengElsevierJournal of Materials Research and Technology2238-78542021-07-011324192432Correlation between active/inactive (Ca, Mg, Al)-Ox-Sy inclusions and localised marine corrosion of EH36 steelsYuhang Wang0Xian Zhang1Lin Cheng2Jing Liu3Tingping Hou4Kaiming Wu5The State Key Laboratory of Refractories and Metallurgy, Hubei Province Key Laboratory of Systems Science in Metallurgical Process, Collaborative Innovation Center for Advanced Steels, Wuhan University of Science and Technology, Wuhan 430081, PR ChinaCorresponding author.; The State Key Laboratory of Refractories and Metallurgy, Hubei Province Key Laboratory of Systems Science in Metallurgical Process, Collaborative Innovation Center for Advanced Steels, Wuhan University of Science and Technology, Wuhan 430081, PR ChinaThe State Key Laboratory of Refractories and Metallurgy, Hubei Province Key Laboratory of Systems Science in Metallurgical Process, Collaborative Innovation Center for Advanced Steels, Wuhan University of Science and Technology, Wuhan 430081, PR ChinaThe State Key Laboratory of Refractories and Metallurgy, Hubei Province Key Laboratory of Systems Science in Metallurgical Process, Collaborative Innovation Center for Advanced Steels, Wuhan University of Science and Technology, Wuhan 430081, PR ChinaThe State Key Laboratory of Refractories and Metallurgy, Hubei Province Key Laboratory of Systems Science in Metallurgical Process, Collaborative Innovation Center for Advanced Steels, Wuhan University of Science and Technology, Wuhan 430081, PR ChinaCorresponding author.; The State Key Laboratory of Refractories and Metallurgy, Hubei Province Key Laboratory of Systems Science in Metallurgical Process, Collaborative Innovation Center for Advanced Steels, Wuhan University of Science and Technology, Wuhan 430081, PR ChinaThe correlation between (Ca, Mg, Al)-Ox-Sy inclusions and localised marine corrosion of EH36 steels was investigated. According to their ability to induce localised corrosion, the inclusions were categorised as ‘active’ or ‘inactive’, and the main difference between them was the ratio of CaO/Al2O3. The residual stress at the active inclusion/matrix interface was higher than the yield strength of the steel; therefore, a local plastic deformation region was preferentially formed, triggering localised corrosion initiation. Moreover, the occluded cell accelerated the localised corrosion propagation, and finally the dissolution of the inclusions and the matrix resulted in a stable pit.http://www.sciencedirect.com/science/article/pii/S2238785421005858Low-alloy steelSEMInclusionAnodic dissolutionPitting corrosion
collection DOAJ
language English
format Article
sources DOAJ
author Yuhang Wang
Xian Zhang
Lin Cheng
Jing Liu
Tingping Hou
Kaiming Wu
spellingShingle Yuhang Wang
Xian Zhang
Lin Cheng
Jing Liu
Tingping Hou
Kaiming Wu
Correlation between active/inactive (Ca, Mg, Al)-Ox-Sy inclusions and localised marine corrosion of EH36 steels
Journal of Materials Research and Technology
Low-alloy steel
SEM
Inclusion
Anodic dissolution
Pitting corrosion
author_facet Yuhang Wang
Xian Zhang
Lin Cheng
Jing Liu
Tingping Hou
Kaiming Wu
author_sort Yuhang Wang
title Correlation between active/inactive (Ca, Mg, Al)-Ox-Sy inclusions and localised marine corrosion of EH36 steels
title_short Correlation between active/inactive (Ca, Mg, Al)-Ox-Sy inclusions and localised marine corrosion of EH36 steels
title_full Correlation between active/inactive (Ca, Mg, Al)-Ox-Sy inclusions and localised marine corrosion of EH36 steels
title_fullStr Correlation between active/inactive (Ca, Mg, Al)-Ox-Sy inclusions and localised marine corrosion of EH36 steels
title_full_unstemmed Correlation between active/inactive (Ca, Mg, Al)-Ox-Sy inclusions and localised marine corrosion of EH36 steels
title_sort correlation between active/inactive (ca, mg, al)-ox-sy inclusions and localised marine corrosion of eh36 steels
publisher Elsevier
series Journal of Materials Research and Technology
issn 2238-7854
publishDate 2021-07-01
description The correlation between (Ca, Mg, Al)-Ox-Sy inclusions and localised marine corrosion of EH36 steels was investigated. According to their ability to induce localised corrosion, the inclusions were categorised as ‘active’ or ‘inactive’, and the main difference between them was the ratio of CaO/Al2O3. The residual stress at the active inclusion/matrix interface was higher than the yield strength of the steel; therefore, a local plastic deformation region was preferentially formed, triggering localised corrosion initiation. Moreover, the occluded cell accelerated the localised corrosion propagation, and finally the dissolution of the inclusions and the matrix resulted in a stable pit.
topic Low-alloy steel
SEM
Inclusion
Anodic dissolution
Pitting corrosion
url http://www.sciencedirect.com/science/article/pii/S2238785421005858
work_keys_str_mv AT yuhangwang correlationbetweenactiveinactivecamgaloxsyinclusionsandlocalisedmarinecorrosionofeh36steels
AT xianzhang correlationbetweenactiveinactivecamgaloxsyinclusionsandlocalisedmarinecorrosionofeh36steels
AT lincheng correlationbetweenactiveinactivecamgaloxsyinclusionsandlocalisedmarinecorrosionofeh36steels
AT jingliu correlationbetweenactiveinactivecamgaloxsyinclusionsandlocalisedmarinecorrosionofeh36steels
AT tingpinghou correlationbetweenactiveinactivecamgaloxsyinclusionsandlocalisedmarinecorrosionofeh36steels
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