Effect of dissolved oxygen and hydrogen on the stress corrosion cracking behavior of alloy 600 in high temperature water

2021 ◽  
Vol 543 ◽  
pp. 152603
Author(s):  
Jiamei Wang ◽  
Tianyu Zhu ◽  
Kai Chen ◽  
Donghai Du ◽  
Peter L. Andresen ◽  
...  
Keyword(s):  
High Temperature ◽  
Dissolved Oxygen ◽  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
Corrosion Cracking ◽  
Alloy 600 ◽  
Cracking Behavior ◽  
High Temperature Water ◽  
Temperature Water

Effects of Carbides on Susceptibility of Alloy 600 to Stress Corrosion Cracking in High-Temperature Water

CORROSION ◽  
1993 ◽  
Vol 49 (11) ◽  
pp. 867-876 ◽  
Author(s):  
R. B. Rebak ◽  
Z. Xia ◽  
Z. Szklarska-Smialowska
Keyword(s):  
High Temperature ◽  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
Corrosion Cracking ◽  
Alloy 600 ◽  
Intergranular Stress Corrosion ◽  
High Temperature Water ◽  
Dilute Aqueous Solutions ◽  
Intergranular Stress Corrosion Cracking ◽  
Temperature Water

Abstract The electrochemical behavior of sensitized, carburized, and mill-annealed alloy 600 (UNS N06600) was studied in hydrogenated, aerated, and high-temperature (250°C to 350°C) dilute aqueous solutions. In high-temperature water at high anodic potentials, the current density (CD) from carbide dissolution was higher than CD from matrix dissolution. In oxidizing environments, intergranular stress corrosion cracking propagated in alloy 600 by dissolution of continuous or semicontinuous carbides at the grain boundary, in sensitized and non-sensitized materials.

Resistance of Ferritic Steels to Stress Corrosion Cracking in High Temperature Water

2013 ◽  
Author(s):  
Raul B. Rebak
Keyword(s):  
High Temperature ◽  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
Corrosion Cracking ◽  
Ferritic Steels ◽  
Pressurized Water ◽  
Cracking Behavior ◽  
High Temperature Water ◽  
Water Reactors ◽  
Temperature Water

Austenitic stainless steels such as type 304 and 316 are susceptible to stress corrosion cracking in high temperature water environments typical of boiling water reactors (BWR) and pressurized water reactors (PWR). The accumulation over time of irradiation dose on the austenitic materials increases further their susceptibility to environmental cracking. Ferritic steels containing chromium are less susceptible to irradiation damage such as void swelling. Ferritic steels also offer desirable higher thermal conductivity and lower thermal expansion coefficient. Little is known however about the stress corrosion cracking behavior of ferritic steels in high temperature water. Crack propagation rate studies were conducted using four types of wrought and welded ferritic steels (5 to 17% Cr) in high purity water at 288°C containing dissolved oxygen or dissolved hydrogen. Results show that the ferritic steels are notably more resistant to environmental assisted cracking than the austenitic materials.

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