Technical Note:A Correlation between Anodic Film Properties and Stress Corrosion Cracking Behavior of Alloy 600 and Alloy 690 in High-Temperature Caustic Solutions

CORROSION ◽  
2003 ◽  
Vol 59 (3) ◽  
pp. 203-206 ◽  
Author(s):  
D. H. Hur
Keyword(s):  
High Temperature ◽  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
Corrosion Cracking ◽  
Anodic Film ◽  
Alloy 600 ◽  
Film Properties ◽  
Cracking Behavior ◽  
Alloy 690

scholarly journals Stress Corrosion Cracking Behavior of Alloy 600 Coupled to Magnetite under High-Temperature Caustic Conditions

Materials ◽  
2019 ◽  
Vol 12 (13) ◽  
pp. 2091
Author(s):  
Geun Dong Song ◽  
Jeoh Han ◽  
Soon-Hyeok Jeon ◽  
Do Haeng Hur
Keyword(s):  
High Temperature ◽  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
Electrochemical Behavior ◽  
Corrosion Cracking ◽  
Electrochemical Potential ◽  
Alloy 600 ◽  
Cracking Behavior ◽  
Coupling System

This study aims to investigate and explain the magnetite-accelerated stress corrosion cracking phenomenon of Alloy 600 under caustic conditions, based on the electrochemical behavior. After the SCC test that lasted for 300 h, no cracks were observed in any of the magnetite-free specimens, whereas cracks with a depth of 150 to 280 μm were generated in all the magnetite-deposited specimens. Furthermore, the electrochemical behavior of magnetite and Alloy 600 demonstrated that Alloy 600 behaved as an anode in the coupling system with magnetite. In this coupling system, the electrochemical potential of Alloy 600 can be shifted into the range potentially susceptible to stress corrosion cracking.

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