Celebrate World Corrosion Awareness Day with 20% off eCourses and eBooks with code WCAD2024 at checkout!
Aims to evaluate stress and strain around a pit and to determine the relationship between plastic zone size and pit geometry using the Finite Element Method (FEM). A database containing the relationship of pit parameters and plastic zone size can provide an understanding of the risk of through-wall failure in X65 steel.
Pitting corrosion is an insidious form of localized damage that may lead to through-wall failure and loss of containment in vessels and pipelines either directly through corrosion or indirectly following a pit-to-crack transitional stage. As such pitting corrosion is a safety environmental and economic concern for many industries. Within the oil and gas sector X65 steel is commonly used for the conveyance of production fluids. While it is known that this material grade is susceptible to pitting and cracking in several media a fundamental understanding of the pit-to-crack evolution is still not available. The growth of pits is known to be a non-linear stage in the fatigue lifetime and the developing plastic deformation can be an important factor in the pit growth regime. Consequently there is a need to study the relationship of the plastic zone size and pit geometry/size. This work aims to evaluate the stress and strain around the pit and also to determine the relationship between plastic zone size and pit geometry using the Finite Element Method (FEM). The production of a database containing the relationship of pit parameters and plastic zone size has the potential to provide a more informed understanding of the risk of through-wall failure in X65 steel as initiated by pitting corrosion.KEYWORDS: Pitting corrosion FEA Stress Concentration Factor plastic deformation X65 Steel.
Keywords: pitting corrosion, FEA, plastic deformation, X65 Steel
Available fracture toughness (FT) test methodologies are reviewed in this publication to compare their details.
We are unable to complete this action. Please try again at a later time.
If this error continues to occur, please contact AMPP Customer Support for assistance.
Use this error code for reference:
Please login to use Standards Credits*
* AMPP Members receive Standards Credits in order to redeem eligible Standards and Reports in the Store
You are not a Member.
AMPP Members enjoy many benefits, including Standards Credits which can be used to redeem eligible Standards and Reports in the Store.
You can visit the Membership Page to learn about the benefits of membership.
You have previously purchased this item.
Go to Downloadable Products in your AMPP Store profile to find this item.
You do not have sufficient Standards Credits to claim this item.
Click on 'ADD TO CART' to purchase this item.
Your Standards Credit(s)
1
Remaining Credits
0
Please review your transaction.
Click on 'REDEEM' to use your Standards Credits to claim this item.
You have successfully redeemed:
Go to Downloadable Products in your AMPP Store Profile to find and download this item.
This paper reviews both available stress corrosion cracking data and test methodologies involving additions of elemental sulfur using several procedures. It utilizes thermodynamic modeling to assess the chemical speciation of elemental sulfur under selected test conditions.
Frequency scan fatigue crack growth rate tests were performed at a fixed stress intensity factor range to determine the effect of frequency in two different sour environments. Both sour environments had the same partial pressure of H2S (0.21psia) but different pH values.