Journal ArticleDOI
Studies on the influence of metallurgical variables on the stress corrosion behavior of AISI 304 stainless steel in sodium chloride solution using the fracture mechanics approach
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In this article, a nuclear grade AISI type 304 stainless steel in a boiling solution of 5M NaCl+ 0.15M Na2SO4+ 3 mL/L HC1 (bp 381 K) was presented.Abstract:
Stress corrosion data on a nuclear grade AISI type 304 stainless steel in a boiling solution of 5M NaCl+ 0.15M Na2SO4+ 3 mL/L HC1 (bp 381 K) for various metallurgical conditions of the steel are presented in this article. The metallurgical conditions used are solution annealing, sensitization, 10 pct cold work, 20 pct cold work, solution annealing + sensitization, 10 pct cold work + sensi-tization, and 20 pct cold work + sensitization. The fracture mechanics approach has been used to obtain quantitative data on the stress corrosion crack growth rates. The stress intensity factor,K
1, andJ integral,J
1, have been used as evaluation parameters. The crack growth rates have been measured using compact tension type samples under both increasing and decreasing stress intensity factors. A crack growth rate of 5 X 10-11 m/s was chosen for the determination of threshold para-meters. Results of the optical microscopic and fractographic examinations are presented. Acoustic signals were recorded during crack growth. Data generated from acoustic emissions, activation energy measurements, and fractographic features indicate hydrogen embrittlement as the possible mechanism of cracking.read more
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Corrosion of 304 stainless steel exposed to nitric acid-chloride environments
TL;DR: In this article, the combined effect of HNO 3, NaCl, and temperature on the general corrosion behavior of 304 stainless steel (SS) was examined, and the corrosion response of 304 SS was bifurcated: materials were either continuously passive following immersion or spontaneously passivated following a period of active dissolution.
Journal Article
Corrosion Of 304 Stainless Steel Exposed To Nitric Acid - Chloride Environments
TL;DR: In this paper, the combined effect of HNO 3, NaCl, and temperature on the general corrosion behavior of 304 stainless steel (SS) was examined, and the corrosion response of 304 SS was bifurcated: materials were either continuously passive following immersion or spontaneously passivated following a period of active dissolution.
Journal ArticleDOI
Evaluation of stress corrosion cracking phenomenon in an AISI type 316LN stainless steel using acoustic emission technique
TL;DR: In this paper, the authors analyzed the acoustic emission (AE) signals to determine the micro-process during stress corrosion cracking (SCC) of AISI type 316LN stainless steel that cause the AE, and thus the mechanism of the SCC process.
Journal ArticleDOI
Assessment of stress corrosion crack initiation and propagation in AISI type 316 stainless steel by electrochemical noise technique
TL;DR: In this article, the potential and current data obtained on AISI type 316 stainless steel during pitting corrosion in deaerated 0.5 M sodium chloride (NaCl) solution, and during (ii) stress corrosion cracking (SCC) in boiling acidified NaCl solution.
Journal ArticleDOI
Experimental and numerical investigation of stress corrosion cracking of sensitized type 304 stainless steel under high-temperature and high-purity water
TL;DR: In this article, experimental and numerical investigation of stress corrosion cracking of stainless steel under simulated environment of boiling water reactors was conducted in high-temperature and high-purity water.
References
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Journal ArticleDOI
Effects of hydrogen on the properties of iron and steel
TL;DR: In this paper, the effects of hydrogen on the physical and mechanical properties of iron and steel are reviewed and a new mechanism for the cold work peak for hydrogen in iron is considered.
Journal ArticleDOI
Equilibrium aspects of hydrogen-induced cracking of steels
R.A. Oriani,P.H. Josephic +1 more
TL;DR: In this paper, the threshold pressures, p ∗, of hydrogen and of deuterium gases necessary to cause crack propagation in AISI 4340 steel of 250 ksi yield strength, were determined as functions of plane-strain stress intensity factor K at room temperature.
Journal ArticleDOI
Hydrogen transport by dislocations
TL;DR: In this article, a kinetic model for the transport of hydrogen, as Cottrell atmospheres on dislocation, at a rate appreciably in excess of that for lattice diffusion is presented.
Journal ArticleDOI
Hydrogen transport in austenitic stainless steel
M.R. Louthan,R.G. Derrick +1 more
TL;DR: In this paper, the authors determined the permeability, diffusivity, and solubility of hydrogen in austenitic stainless steels by analysing the time-temperature dependence of deuterium flux through foil specimens.
Journal ArticleDOI
The solution composition and electrode potential in pits, crevices and cracks
TL;DR: The extent of information on the solution composition and electrode potential in pits, crevices and cracks has been reviewed in this article, where the pH values in the cavities are interpreted on the basis of the nature of the electrode reactions in the cavity and the hydrolysis of dissolved metal cations.