Stress Corrosion Cracking of an Austenitic Stainless Steel in Nitrite-Containing Chloride Solutions

Materials

R. K. Singh Raman²  Wai Hoong Siew¹ 

[1] Mechanical Engineer, IBM Australia, 60 City Road, Melbourne, Victoria 3006, Australia; E-Mail:;Department of Mechanical and Aerospace Engineering, Monash University, Melbourne, Victoria 3800, Australia

关键词: chloride stress corrosion cracking;    austenitic stainless steel;   

DOI  :  10.3390/ma7127799

来源: mdpi

【 摘 要 】

This article describes the susceptibility of 316L stainless steel to stress corrosion cracking (SCC) in a nitrite-containing chloride solution. Slow strain rate testing (SSRT) in 30 wt. % MgCl₂ solution established SCC susceptibility, as evidenced by post-SSRT fractography. Addition of nitrite to the chloride solution, which is reported to have inhibitive influence on corrosion of stainless steels, was found to increase SCC susceptibility. The susceptibility was also found to increase with nitrite concentration. This behaviour is explained on the basis of the passivation and pitting characteristics of 316L steel in chloride solution.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland.