Influence of Mechanical Stresses on the Propagation of Corrosion Cracks in Pipeline Walls

Influence of Mechanical Stresses on the Propagation of Corrosion Cracks in Pipeline Walls

We propose new methods for the analysis of regularities of the kinetics of growth of external corrosion crack in the walls of underground metal pipelines with regard for the given internal pressure and cathodic protection. They are based on the analysis of corrosion currents at the crack tips taking...

Full description

Saved in:
Bibliographic Details
Published in:Materials science (New York, N.Y.) Vol. 57; no. 4; pp. 539 - 548
Main Authors: Yuzevych, V. М., Lozovan, V. P.
Format: Journal Article
Language:English
Published: New York Springer US 2022
Springer
Springer Nature B.V
Subjects:
Analysis
Anodic dissolution
Cathodic protection
Characterization and Evaluation of Materials
Chemistry and Materials Science
Corrosion
Corrosion currents
Crack propagation
Crack tips
Dissolution
Internal pressure
Materials Science
Ohmic drop
Pipe lines
Pipelines
Service life assessment
Solid Mechanics
Steel
Stress corrosion cracking
Stress propagation
Structural Materials
Underground corrosion
Voltage drop
crack
corrosion currents
mechanical stresses
underground pipeline
neural networks
cathodic protection
quality criterion
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We propose new methods for the analysis of regularities of the kinetics of growth of external corrosion crack in the walls of underground metal pipelines with regard for the given internal pressure and cathodic protection. They are based on the analysis of corrosion currents at the crack tips taking into account the mechanical stresses, Ohmic potential drop, and overvoltage of the anodic dissolution of the metal. We propose an improved method for the evaluation of the service life of underground metallic pipelines in view of the influence of mechanical stresses formed in the vicinity of the crack tip on corrosion currents. It is shown that mechanical stresses lead to a decrease in the service life of the pipeline by a factor of 3.6 as compared with the case where the internal pressure is close to atmospheric.
ISSN:1068-820X
1573-885X
DOI:10.1007/s11003-022-00576-z