Effect of strain-path on stress corrosion cracking of AISI 304L stainless steel in PWR primary environment at 360 °C

2007 ◽  
Author(s):  
F Vaillant ◽  
D Delafosse ◽  
T Couvant ◽  
J Boursier
Keyword(s):  
Stainless Steel ◽  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
Strain Path ◽  
Corrosion Cracking ◽  
304L Stainless Steel ◽  
Aisi 304L ◽  
Aisi 304L Stainless Steel

Evaluation of Stress Corrosion Cracking of Type 304L Stainless Steel in Low Concentration Sodium Hydroxide Solution with High Temperature

2007 ◽  
Vol 353-358 ◽  
pp. 3031-3034
Author(s):  
Rong Rong Zhou ◽  
Jian Ming Gong ◽  
Feng Li ◽  
Shan Tung Tu
Keyword(s):  
Stainless Steel ◽  
High Temperature ◽  
Stress Corrosion ◽  
Sodium Hydroxide ◽  
Stress Corrosion Cracking ◽  
Sodium Hydroxide Solution ◽  
Corrosion Cracking ◽  
304L Stainless Steel ◽  
Low Concentration ◽  
Hydroxide Solution

Stress corrosion cracking (SCC) of austenitic stainless steel serviced in aggressive environment often occurs in power, petrochemical industry, and leads to premature equipment failure and great economic loss. This paper focuses on the problem of the SCC on the 304L stainless steel nozzle of a hydrogenation reactor, which is caused due to on-line alkali cleaning. Susceptibility for SCC was evaluated by Slow Strain Rate Test (SSRT) for as-rolled and sensitized 304L stainless steel in low concentration sodium hydroxide solution with high temperature. The effects of different strain rates, different concentration of sodium hydroxide and different solution temperatures on SCC were investigated. On the basis of this, the contrast tests were also performed in high temperature pure water. After SSRT, fractograph of the fractured specimens was analyzed by using scanning electron microscopy (SEM).

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