A Model to Predict Stress Corrosion Cracking of Welded Stainless Steel Canister

MRS Advances ◽  
2016 ◽  
Vol 1 (63-64) ◽  
pp. 4179-4184
Author(s):  
Gen Nakayama ◽  
Yohei Sakakibara ◽  
Tomomi Kouketsu ◽  
Kouji Arakawa ◽  
Yutaka Mizo ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
Steel Structures ◽  
Chloride Ion ◽  
Storage Conditions ◽  
Residual Stress Distribution ◽  
Corrosion Cracking ◽  
Ion Concentration ◽  
Degree Of Sensitization

ABSTRACTFabricated stainless steel structures are susceptible to stress corrosion cracking (SCC), despite being placed in chloride-containing natural water or humid atmospheres. The present paper describes a model that can define the conditions under which SCC is initiated and propagated, based on analyses of actual SCC incidents induced at welded flanges of cylindrical stainless steel structures.Whenever the vitrified radioactive waste canister storage conditions deviate from normal and appropriate conditions due to earthquakes or tsunamis, the exposed canisters are expected to suffer SCC within 400 hours to 7 years, according to the analytical results obtained such as degree of sensitization, residual stress distribution, chloride ion concentration, and temperature.

Effect of Long-Term Service Exposure on the Localized Corrosion and Stress Corrosion Cracking Susceptibility of Type 347 Stainless Steel

CORROSION ◽  
10.5006/2612 ◽  
2017 ◽  
Vol 74 (3) ◽  
pp. 350-361 ◽  
Author(s):  
K. Ravindranath ◽  
N. Tanoli ◽  
B. Al-Wakaa
Keyword(s):  
Stainless Steel ◽  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
Corrosion Cracking ◽  
Localized Corrosion ◽  
X Ray Diffraction ◽  
Degree Of Sensitization ◽  
Corrosion Susceptibility ◽  
Service Exposure

The paper presents the results of a study conducted on the effects of long-term service exposure of Type 347 stainless steel (SS) on the microstructure and corrosion susceptibility. The material subjected to the study was in service in a petroleum refinery as heater tube at 620°C for 31 years. The microscopic and x-ray diffraction studies of the service-exposed specimen revealed the precipitation of chromium-rich carbides along the grain boundaries. The microstructural changes that occurred as a result of service exposure affected the ductility and toughness of the alloy. The sensitization of the alloy was assessed by scanning electron microscopy and double loop electrochemical potentiodynamic reactivation. The studies have indicated some degree of sensitization in the alloy. The service exposure resulted in a marginal increase in the susceptibility of Type 347 SS to pitting in environments containing NaCl and NaCl + H2S. Environments such as H2SO4 and K2S4O6 at the tested concentrations did not differentiate between service-exposed and solution annealed specimens for their corrosion susceptibility. Slow strain rate testing of Type 347 SS in both the service-exposed and solution annealed conditions showed susceptibility to stress corrosion cracking in environment containing NaCl + H2S, while the alloy did not show susceptibility to SCC in H2SO4 and K2S4O6. The long-term service exposure did not noticeably influence the SCC susceptibility of Type 347 SS under the tested conditions.

RA2205

Alloy Digest ◽  
1997 ◽  
Vol 46 (3) ◽  
Keyword(s):  
Stainless Steel ◽  
Physical Properties ◽  
Stress Corrosion ◽  
Duplex Stainless Steel ◽  
Tensile Properties ◽  
Stress Corrosion Cracking ◽  
Chloride Ion ◽  
Corrosion Cracking ◽  
Annealed Condition ◽  
Type 316L

Abstract RA2205 is an austenitic/ferritic duplex stainless steel containing about 40 to 50% ferrite in the annealed condition. The alloy provides superior service when compared to Type 316L or 317L in most environments, especially considering pitting, chloride-ion stress-corrosion cracking resistance, and strength comparisons. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on machining and joining. Filing Code: SS-674. Producer or source: Rolled Alloys Inc.

NAS 825

Alloy Digest ◽  
2012 ◽  
Vol 61 (2) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Physical Properties ◽  
Stress Corrosion ◽  
Tensile Properties ◽  
Nickel Alloy ◽  
Stress Corrosion Cracking ◽  
Chloride Ion ◽  
Heat Treating ◽  
Corrosion Cracking ◽  
Corrosion Resistant

Abstract NAS 825 is a corrosion-resistant nickel alloy that has resistance to both oxidizing and reducing environments, and with 42% nickel, the alloy is very resistant to chloride-ion stress-corrosion cracking. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Ni-694. Producer or source: Nippon Yakin Kogyo Company Ltd.

scholarly journals Stress Corrosion Cracking Testing of 13Cr Stainless Steel in Dense Phase CO2 with Oxygen

2017 ◽  
Vol 114 ◽  
pp. 6778-6799 ◽  
Author(s):  
Gaute Svenningsen ◽  
Bjørn Helge Morland ◽  
Arne Dugstad ◽  
Boris Thomas
Keyword(s):  
Stainless Steel ◽  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
Corrosion Cracking ◽  
Dense Phase
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