{"title":"Improvement of pitting corrosion resistance of AISI type SS 304L in chloride medium","authors":"Gopinath Shit","doi":"10.1007/s12034-025-03477-4","DOIUrl":null,"url":null,"abstract":"<div><p>Chloride ions in the chemical, nuclear, pharmaceutical, food, marine, petrochemical industries, and body fluid medium cause pitting corrosion in stainless steel (SS). In this research, the pitting corrosion resistance behaviour of SS 304L was evaluated in simulated marine environment (SME) and simulated body fluid (SBF) solutions. A solution annealed coarse-grain (CG) SS 304L was severely plastic deformed (SPD, up to 90%) at liquid N<sub>2</sub> temperature. This leads to the formation of ultra-fine grain (UFG) microstructure. UFG specimens were further annealed at 1050°C for 1-h, and gamma-ray irradiated separately at a dose of 7 kGy. Pitting was evidenced for the as-received CG, UFG-deformed and UFG-deformed, followed by annealed (1050°C for 1 h) specimens, whereas pitting corrosion was not observed for the UFG specimen after gamma-ray irradiation in both SME and SBF solutions.</p></div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"48 4","pages":""},"PeriodicalIF":2.1000,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Bulletin of Materials Science","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s12034-025-03477-4","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Chloride ions in the chemical, nuclear, pharmaceutical, food, marine, petrochemical industries, and body fluid medium cause pitting corrosion in stainless steel (SS). In this research, the pitting corrosion resistance behaviour of SS 304L was evaluated in simulated marine environment (SME) and simulated body fluid (SBF) solutions. A solution annealed coarse-grain (CG) SS 304L was severely plastic deformed (SPD, up to 90%) at liquid N2 temperature. This leads to the formation of ultra-fine grain (UFG) microstructure. UFG specimens were further annealed at 1050°C for 1-h, and gamma-ray irradiated separately at a dose of 7 kGy. Pitting was evidenced for the as-received CG, UFG-deformed and UFG-deformed, followed by annealed (1050°C for 1 h) specimens, whereas pitting corrosion was not observed for the UFG specimen after gamma-ray irradiation in both SME and SBF solutions.
期刊介绍：
The Bulletin of Materials Science is a bi-monthly journal being published by the Indian Academy of Sciences in collaboration with the Materials Research Society of India and the Indian National Science Academy. The journal publishes original research articles, review articles and rapid communications in all areas of materials science. The journal also publishes from time to time important Conference Symposia/ Proceedings which are of interest to materials scientists. It has an International Advisory Editorial Board and an Editorial Committee. The Bulletin accords high importance to the quality of articles published and to keep at a minimum the processing time of papers submitted for publication.
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