The role of residual stress in neutral pH stress corrosion cracking of pipeline steels. Part I: Pitting and cracking occurrence

Effect of environmental and metallurgical factors on hydrogen induced cracking of HSLA steels

This paper reviews the current understanding of the mechanisms of stress corrosion cracking of pipeline steels. The similarities, the differences and the influencing factors are considered for the “high pH” stress corrosion cracking caused by a concentrated bicarbonate-carbonate solution, and for the “low pH” stress corrosion cracking due to a diluter solution. For high pH stress corrosion cracking, it is well accepted that the mechanism involves anodic dissolution for crack initiation and propagation. In contrast, it has been suggested that the low pH stress corrosion cracking is associated with the dissolution of the crack tip and sides, accompanied by the ingress of hydrogen into the pipeline steel. But the precise influence of hydrogen on the mechanism needs to be further studied.

Review of stress corrosion cracking of pipeline steels in "low" and "high" pH solutions

Stress Corrosion Cracking of Pipelines

This paper presents a fundamental study of the influence of carbon steel microstructure on the corrosion rate Subsequently, the corrosion performance of various grades of carbon steels were evaluated in stirred autoclaves under elevated carbon dioxide and temperature conditions Corrosion and penetration rates were determined via mass loss and optical microscopy, respectively It was found that the corrosion rate of carbon steel line pipe is influenced by microstructure More specifically, a relationship between localized corrosion susceptibility and the presence of pearlite bands in the steel microstructure was found However, no correlation was evident between minor elemental concentrations (ie, Ni, Cr, Mo) and corrosion resistance It has been proposed that the corrosion stability of the various microstructures may arise from variations in the distribution of carbon bearing phases within the steel In the banded ferrite/pearlite structure, the carbon-bearing phase (pearlite) is distributed in layers whereas in the other structures the carbon-bearing phases are much more evenly distributed This study reports on the corrosion resistance of carbon steels in relation to their chemical and physical properties

The influence of microstructure on the corrosion rate of various carbon steels

Effect of retained austenite on the corrosion performance of modified 13% Cr martensitic stainless steel (0.025%C-13%Cr-[4% to 6%]Ni-[1% to 2%]Mo) seamless pipe is investigated. Retained a...

Effect of Retained Austenite on Corrosion Performance for Modified 13% Cr Steel Pipe

Stress corrosion cracking (SCC) on the external surface of pipelines contributes to the major failure of pipelines. The great majority of SCC is intergranular and occurs in a carbonate-bic...

Role of Microstructures on Stress Corrosion Cracking of Pipeline Steels in Carbonate-Bicarbonate Solution

Sulfide stress corrosion cracking (SSC) behavior of line pipe steel was investigated using the SSC test method in NACE Standard TM0177-77, “Testing of Metals for Resistance to Sulfide Stre...

Sulfide Stress Corrosion Cracking of Line Pipe

A new 13% Cr martensitic stainless steel (0.025% C-13% Cr-Ni-Mo) with excellent resistance to carbon dioxide (CO2) corrosion and good resistance to sulfide stress cracking (SSC) was develo...

Mitsuo Kimura

Papers

Effect of Retained Austenite on Corrosion Performance for Modified 13% Cr Steel Pipe

Role of Microstructures on Stress Corrosion Cracking of Pipeline Steels in Carbonate-Bicarbonate Solution

Sulfide Stress Corrosion Cracking of Line Pipe

Corrosion Resistance of High-Strength Modified 13% Cr Steel

Effects of metallurgical factors and test conditions on near neutral pH SCC of pipeline steels.