scholarly journals Environmental Degradation of Dissimilar Austenitic 316L and Duplex 2205 Stainless Steels Welded Joints

2017 ◽  
Vol 62 (4) ◽  
pp. 2107-2112 ◽  
Author(s):  
S. Topolska ◽  
J. Łabanowski
Keyword(s):  
Strain Rate ◽  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
Stainless Steels ◽  
Welded Joints ◽  
Sea Water ◽  
Water Solution ◽  
Corrosion Cracking ◽  
Environmentally Assisted Cracking ◽  
316L Steel

AbstractThe paper describes structure and properties of dissimilar stainless steels welded joints between duplex 2205 and austenitic 316L steels. Investigations were focused on environmentally assisted cracking of welded joints. The susceptibility to stress corrosion cracking (SCC) and hydrogen embrittlement was determined in slow strain rate tests (SSRT) with the strain rate of 2.2 × 10−6s−1. Chloride-inducted SCC was determined in the 35% boiling water solution of MgCl2environment at 125°C. Hydrogen assisted SCC tests were performed in synthetic sea water under cathodic polarization condition. It was shown that place of the lowest resistance to chloride stress corrosion cracking is heat affected zone at duplex steel side of dissimilar joins. That phenomenon was connected with undesirable structure of HAZ comprising of large fractions of ferrite grains with acicular austenite phase. Hydrogen assisted SCC tests showed significant reduction in ductility of duplex 2205 steel while austenitic 316L steel remains almost immune to degradation processes. SSR tests of dissimilar welded joints revealed a fracture in the area of austenitic steel.

scholarly journals Stress Corrosion Cracking of Stainless Steels in Sea Water at Ambient Temperature

1972 ◽  
Vol 21 (5) ◽  
pp. 219-223 ◽  
Author(s):  
Kazuo Tanno ◽  
Kunitaka Makabe ◽  
Yasumasa Furutani ◽  
Natsuki Kawashima
Keyword(s):  
Ambient Temperature ◽  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
Stainless Steels ◽  
Sea Water ◽  
Corrosion Cracking

scholarly journals Crevice corrosion and environmentally assisted cracking of high-strength duplex stainless steels in simulated concrete pore solutions

2021 ◽  
Author(s):  
Robert Moser ◽  
Preet Singh ◽  
Lawrence Kahn ◽  
Kimberly Kurtis ◽  
David González Niño ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Hydrogen Embrittlement ◽  
Strain Rate ◽  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
Stainless Steels ◽  
Crevice Corrosion ◽  
High Strength ◽  
Environmentally Assisted Cracking ◽  
Rate Testing

This paper presents a study of crevice corrosion and environmentally assisted cracking (EAC) mechanisms in UNS S32205 and S32304 which were cold drawn to tensile strengths of approximately 1300 MPa. The study utilized a combination of electrochemical methods and slow strain rate testing to evaluate EAC susceptibility. UNS S32205 was not susceptible to crevice corrosion in stranded geometries at Cl⁻ concentrations up to 1.0 M in alkaline and carbonated simulated concrete pore solutions. UNS S32304 did exhibit a reduction in corrosion resistance when tested in a stranded geometry. UNS S32205 and S32304 were not susceptible to stress corrosion cracking at Cl⁻ concentrations up to 0.5 M in alkaline and carbonated solutions but were susceptible to hydrogen embrittlement with cathodic overprotection.

scholarly journals Prediction of Environmental and Strain-Rate Effects on the Stress Corrosion Cracking of Austenitic Stainless Steels

1987 ◽  
Vol 109 (1) ◽  
pp. 116-123 ◽  
Author(s):  
P. S. Maiya
Keyword(s):  
Strain Rate ◽  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
Stainless Steels ◽  
Austenitic Stainless Steels ◽  
Corrosion Cracking ◽  
Dissolution Mechanism ◽  
Extension Rate ◽  
Strain Rate Effects ◽  
Degree Of Sensitization

The stress corrosion cracking (SCC) susceptibility of austenitic stainless steels in high-temperature water is controlled by environmental variables (e.g., dissolved oxygen, corrosion potential, impurities), microstructure (e.g., degree of sensitization), and strain rate. A phenomenological model based on the slip-dissolution mechanism and elastic-plastic fracture mechanics is presented to quantitatively describe the effects of both environment-related parameters and strain rate on SCC in constant extension rate tests. The model predictions are in good agreement with the results of tests performed on Types 304, 316, and 316NG stainless steel at different strain rates in a wide variety of environments relevant to boiling-water reactors.

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