Environmentally assisted stress-corrosion cracking of high-strength carbon steel patented wire

1989 ◽  
Vol 8 (12) ◽  
pp. 1486-1488 ◽  
Author(s):  
N. Sarafianos
Keyword(s):  
Carbon Steel ◽  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
High Strength ◽  
Corrosion Cracking ◽  
Patented Wire

Stress Corrosion Cracking in Low Temperature Carbon Steel

2019 ◽  
Author(s):  
Sultan G. Al-Harthi ◽  
Mohammad Obaid Mohammad Sameer
Keyword(s):  
Carbon Steel ◽  
Low Temperature ◽  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
High Strength ◽  
Corrosion Cracking ◽  
Anhydrous Ammonia ◽  
Root Cause ◽  
Weld Joints ◽  
Analysis Laboratory

Abstract Repeated weld joints leaks were observed in newly commissioned non insulated low temperature carbon steel anhydrous ammonia pipes after few months of operations. A detailed investigation was carried out to identify the root cause which found to be usage of high strength filler wire which leads to stress corrosion cracking (SCC) and weld joints failure. Also, An Online advance inspection via Phased Array Ultrasonic Test (PAUT) was conducted to assess the condition of weld joints in anhydrous ammonia pipe loops. Moreover, three different samples of leaked weld joints were submitted for metallurgical failure analysis laboratory. The paper explains the root cause of the damage, Online PAUT inspection and the challenges faced during development of the rectification procedure and implementation.

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