Immersion exposures of 304 stainless steel ground to a #4 finish were conducted in brines representative of the chemistry of sea salt aerosols at low (40%) and high (76%) relative humidity (RH). Low-RH-equivalent brines resulted in cross-hatched pits, whereas high-RH-equivalent brines produced ellipsoidal, faceted pits. Distinct surface micro-cracking was observed to be associated only with cross-hatched pits and appeared to correlate with a high concentration of dissolved carbonate species in low-RH-equivalent solutions, while being absent in the high-RH-equivalent brines. Correlating these results to brine composition suggested that the concentrations of MgCl<sub>2</sub> and dissolved carbonate species in the brines could, in the presence of machining-induced surface microstructure and residual stress, determine pit morphology in marine atmospheres, potentially impact stress corrosion cracking susceptibility and lifetime prediction. Keywords: Marine atmospheric corrosion ∙ Relative humidity ∙ Austenitic stainless steel ∙ Stress corrosion cracking
Skip Nav Destination
Article navigation
Research Article|
August 01 2022
Correlation of Stainless Steel Pit Morphology to Humidity-Specific Sea Salt Brine Constituents
Jayendran Srinivasan;
Jayendran Srinivasan
J Srinivasan Materials Science and Engineering,
The Ohio State University Fontana Corrosion Center
, Columbus, 43210, United States
Search for other works by this author on:
Alana Parey;
Alana Parey
A Parey Materials Science and Engineering,
The Ohio State University Fontana Corrosion Center
, Columbus, United States
Search for other works by this author on:
Andrew Knight;
Andrew Knight
A Knight Materials Science and Engineering,
Sandia National Laboratories
, Albuquerque, United States
Search for other works by this author on:
Rebecca Schaller;
Rebecca Schaller
R Schaller Materials Science and Engineering,
Sandia National Laboratories
, Albuquerque, United States
Search for other works by this author on:
Jenifer Locke;
Jenifer Locke
J Locke Materials Science and Engineering,
The Ohio State University Fontana Corrosion Center
, Columbus, United States
Search for other works by this author on:
Eric Schindelholz
E Schindelholz Materials Science and Engineering,
The Ohio State University Fontana Corrosion Center
, Columbus, United States
Correspondence: Eric Schindelholz, Email: schindelholz.2@osu.edu
Search for other works by this author on:
CORROSION 4143:.
Article history
Received:
June 14 2022
Revision Received:
July 29 2022
Accepted:
August 01 2022
Citation
Jayendran Srinivasan, Alana Parey, Andrew Knight, Rebecca Schaller, Jenifer Locke, Eric Schindelholz; Correlation of Stainless Steel Pit Morphology to Humidity-Specific Sea Salt Brine Constituents. CORROSION 2022; 4143:. doi: https://doi.org/10.5006/4143
Download citation file:
Sign in
Don't already have an account? Register
Client Account
You could not be signed in. Please check your email address / username and password and try again.
Sign in via your Institution
Sign in via your Institution
14
Views
0
Citations
Citing articles via
Removal of Iron Carbide in Turbulent Flow Conditions and Influence of Iron Carbonate Formation in Aqueous CO2 Corrosion of Mild Steel
Maria Di Bonaventura, Bruce Brown, Marc Singer
Investigation of corrosion inhibitor adsorption on mica and mild steel using electrochemical atomic force microscopy and molecular simulations
Huiru Wang, Sumit Sharma, Alain Pailleret, Bruce Brown, Srdjan Nesic
Crack Growth Behavior in High pH Carbonate/BiCarbonate Environments - Application of Crack Tip Strain Rate Modelling
Ramgopal Thodla, Sandeep Chawla, Narasi Sridhar, Francois Ayello, Alexis Simon
Correlation of Stainless Steel Pit Morphology to Humidity-Specific Sea Salt Brine Constituents
Jayendran Srinivasan, Alana Parey, Andrew Knight, Rebecca Schaller, Jenifer Locke, Eric Schindelholz