Surface buffing and its effect on chloride induced SCC of 304L austenitic stainless steel

The study focuses on the impact of buffing operation on the stress corrosion cracking (SCC) susceptibility of 304L austenitic stainless steel (SS). The SCC susceptibility of the buffed surfaces were determined by testing in boiling magnesium chloride (MgCl2) environment as per ASTM G 36. Test was co...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2018-02, Vol.314 (1), p.12002
Main Authors: Sunil kumar, Pandu, Acharyya, Swati Ghosh, Ramana Rao, S.V., Kapoor, Komal
Format: Article
Language:English
Subjects:
Austenitic stainless steels
Boiling
Buffing
Compressive properties
Magnesium chloride
Optical microscopy
Residual stress
Stainless steel
Stress corrosion cracking
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Summary:The study focuses on the impact of buffing operation on the stress corrosion cracking (SCC) susceptibility of 304L austenitic stainless steel (SS). The SCC susceptibility of the buffed surfaces were determined by testing in boiling magnesium chloride (MgCl2) environment as per ASTM G 36. Test was conducted for 3hr, 9hr and 72hr to study the SCC susceptibility. Buffed surfaces were resistant to SCC even after 72hr of exposure to boiling MgCl2. The surface and cross section of the samples were examined for both before and after exposure to boiling MgCl2 and was characterized using optical microscopy. The study revealed that buffing operation induces compressive residual stresses on the surface, which helps in protecting the surface from SCC.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/314/1/012002