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

International Conference on Advances in Metallurgy, Materials and Manufacturing

冶金学;材料科学;机械制造

Sunil Kumar, Pandu^1 ; Acharyya, Swati Ghosh^1 ; Ramana Rao, S.V.^2 ; Kapoor, Komal^2

School of Engineering Sciences and Technology, University of Hyderabad, Hyderabad

500046, India^1

Nuclear Fuel Complex, Department of Atomic Energy, Government of India, Hyderabad

500062, India^2

关键词: Compressive residual stress;    Magnesium chlorides;    Protecting the surface;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/314/1/012002/pdf
DOI  :  10.1088/1757-899X/314/1/012002

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

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 MgCl2and 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.