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Chloride Stress Corrosion Cracking of a Non-Standard, ‘Borderline’ Chromium-Manganese Stainless Steel – Problems of Counterfeits and Substandard Materials
Chu, K. H.1; Lam, C. C.1; Sun, Y. F.2; Cristino, V.1; Kwok, C. T.1,3; Pan, H.1,4; Lo, K. H.1,3
2021-09-01
Source PublicationEngineering Failure Analysis
ISSN1350-6307
Volume127Pages:105562--
Abstract

Nonstandard chromium-manganese (stainless) steels are gaining popularity nowadays, but data for them are inadequate as the majority of literature is on the ‘pedigrees’ such as the standard 200 series steels. This paper begins with brief overviews of the composition characteristics and the counterfeit problems of such steels. It then presents the slow-strain-rate test results of a chromium-manganese ‘borderline’ stainless steel in room-temperature air, 60 °C NaCl and 60 °C distilled water (the lower-bound temperature for chloride stress corrosion cracking in austenitic stainless steels). At low strain rates (10-6 s-1), grain-boundary segregation of phosphorus and sulphur (especially the latter) can cause intergranular cracking in air and in 60 °C distilled water. In 60 °C NaCl, manganese sulphides may serve as the initiation sites of transgranular cracking. Many producers of nonstandard chromium-manganese (stainless) steels lack impurity control technologies, and so users must be vigilant of this issue. The fracture mode of the ‘borderline’ stainless steel is strain-rate dependent, chaining from being mainly intergranular to being transgranular and dimpled as the strain rate goes up, and a possible reason behind this phenomenon is also suggested in this paper

KeywordChromium-manganese Stainless Steel Chloride Stress Corrosion Cracking Slow Strain Rate Test Counterfeit
Language英語English
The Source to ArticlePB_Publication
Document TypeJournal article
CollectionUniversity of Macau
Corresponding AuthorLo, K. H.
Affiliation1.Department of Electromechanical Engineering, Faculty of Science and Technology, The University of Macau, Macau SAR, China
2.School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, China
3.Institute of Applied Physics and Materials Engineering, The University of Macau, Macau SAR, China
4.Department of Physics and Chemistry, Faculty of Science and Technology, University of Macau, Macau SAR, China
First Author AffilicationFaculty of Science and Technology
Corresponding Author AffilicationFaculty of Science and Technology;  INSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Recommended Citation
GB/T 7714
Chu, K. H.,Lam, C. C.,Sun, Y. F.,et al. Chloride Stress Corrosion Cracking of a Non-Standard, ‘Borderline’ Chromium-Manganese Stainless Steel – Problems of Counterfeits and Substandard Materials[J]. Engineering Failure Analysis,2021,127:105562--.
APA Chu, K. H.,Lam, C. C.,Sun, Y. F.,Cristino, V.,Kwok, C. T.,Pan, H.,&Lo, K. H..(2021).Chloride Stress Corrosion Cracking of a Non-Standard, ‘Borderline’ Chromium-Manganese Stainless Steel – Problems of Counterfeits and Substandard Materials.Engineering Failure Analysis,127,105562--.
MLA Chu, K. H.,et al."Chloride Stress Corrosion Cracking of a Non-Standard, ‘Borderline’ Chromium-Manganese Stainless Steel – Problems of Counterfeits and Substandard Materials".Engineering Failure Analysis 127(2021):105562--.
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