Stress Corrosion Cracking Behavior of Dissimilar Metal Weldments in High Temperature Water Environments

2011 ◽  
pp. 1105-1125
Author(s):  
J. Y. Huang ◽  
M. F. Chiang ◽  
R. C. Kuo ◽  
J. S. Huang ◽  
S. L. Jeng
Keyword(s):  
High Temperature ◽  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
Corrosion Cracking ◽  
Cracking Behavior ◽  
Dissimilar Metal ◽  
High Temperature Water ◽  
Temperature Water

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.

Sign in / Sign up

Export Citation Format

Share Document