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Showing 1 to 20 of 29 for “"Stress Corrosion Cracking (SCC)"”.
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The Effect of Lead on Dealloying and Stress Corrosion Cracking (SCC) of Ni-Cr-Fe Alloys in Boiling Caustic Environments
… of SS 304L were used to evaluate the effect of stress on dealloying and SCC. All exposed surfaces were characterized post-exposure using optical microscopy, scanning electron microscopy (SEM), and energy dispersive x-ray spectroscopy (EDS) chemical analysis with additional characterization done …
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Elevated temperature mechanical properties and corrosion characteristics evaluation of alloy Ht-9
… thesis presents the results of tensile testing, stress corrosion cracking (SCC) and localized corrosion studies of Alloy HT-9, which is currently being considered as a target structural material for transmutation applications. The results of tensile testing indicate that the yield strength and …
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Cracking of zirconium alloys at constant load with and without applied potentials
… tested for evaluation of their resistance to stress corrosion cracking (SCC), delayed hydride cracking (DHC), and localized corrosion (pitting and crevice) in neutral and acidic environments at ambient temperature and 90°C. For SCC testing, constant load and slow-strain-rate techniques were …
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Evaluation of cracking and localized corrosion behavior of cladding materials
… investigation is focused on the evaluation of stress corrosion cracking (SCC), hydrogen embrittlement (HE) and localized corrosion (pitting and crevice) susceptibility of zircaloy-2 and zircaloy-4 in neutral and acidic solutions at 30, 60, 90°C. Constant-load and slow-strain-rate (SSR) …
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Effects of thermal aging on Stress Corrosion Cracking and mechanical properties of stainless steel weld metals
Stress Corrosion Cracking (SCC) in and around primary loop piping welds in Boiling Water Reactors has been observed worldwide as plants continue to operate at temperatures and pressures near 2880C (5500F) and 6.9 MPa (1000 PSI). An experimental program was designed to explore the effect of thermal …
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Stress corrosion cracking and hydrogen embrittlement of thick section high strength low alloy steel
… experimental study was conducted to evaluate the corrosion performance of weldments of a high strength low alloy(HSLA) steel in a simulated seawater environment. This steel, designated HSLA80, was developed by the United States Navy for use in ship structural applications. Stress corrosion …
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Material Corrosion by Nuclear Reactor Coolants
This work investigated material corrosion by nuclear reactor coolants, including pressurized water reactor (PWR) coolant, boiling water reactor (BWR) coolant, high-temperature steam, lead-bismuth eutectic (LBE), and molten salt. Novel cladding materials for accident tolerant fuel (ATF) and additive …
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An investigation of corrosion mechanisms of constructional alloys in supercritical water oxidation (SCWO) systems
… of SCWO systems, nickel-base alloys are tested. Corrosion in aqueous feed streams of ambient pH values of 2, 1 and 7 is studied both at supercritical (-425⁰C) and subcritical (-300-360⁰C) temperatures with a constant pressure of 24.1MPa. Dealloying of Ni and Fe, and oxidation of Cr and Mo are …
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Microstructural analysis of aluminium alloy 2096 as a function of heat treatment.
… into possible metallurgical culprits of stress corrosion cracking (SCC) of Al-Li-Cu alloy AA2096 was carried out as a function of isothermal aging time at 160°C. Two tempers were analysed for this study: under-aged at 4 hours (UA4) and under-aged at 12 hours (UA12). Transmission electron …
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Integrated environmental degradation model for Fe-Ni-Cr alloys in irradiated aqueous solutions
… for all factors affecting irradiation assisted stress corrosion cracking. *water chemistry including radiolysis and hydrogen injection *radiation induced segregation of the metal *radiation hardening of the metal *crack tip strain rate of a growing crack *dissolution rate at the crack tip …
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Stress corrosion cracking behavior of friction stir processed ultrafine grained light metal alloys
… a microstructural modification tool, on the corrosion behavior of Al-Mg, Al-Mg-Sc, Mg-Al-Zn and Mg-Y-RE alloys has been studied. An attempt has been made to establish correlation between processing parameters and the subsequent microstructural evolution especially matrix grain size on the …
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Chemical and structural analysis of grain boundaries in Inconel 690 for corrosion resistance
Stress Corrosion Cracking (SCC) is a failure mechanism that results from the combination of tensile stress, corrosive environment and material susceptibility; it is frequently an intergranular attack. Material-environment combinations for SCC readily exist in nuclear power plants, and are critical …
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Polymer-Derived Ceramic Coatings for Stress and Corrosion Resistance in Stainless Steel: Optimization of Thermal Stability and Structural Integrity
… particularly SiON and SiOCN, aimed at enhancing corrosion resistance, thermal stability, and structural integrity of stainless steel in harsh environments. Using perhydropolysilazane (PHPS) and its derivatives, various coating compositions and pyrolysis conditions were optimized to tailor their …
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Chemically-bonded enamel-coated steel pipelines for corrosion protection and flow efficiency
… thermal environments, in order to improve the corrosion protection and safety of hazardous liquid and natural gas pipelines while reducing pressure loss. Out of five types of enamels and their various mixtures, Tomatec slurry and GP2118 powder were selected for steel pipeline applications. They …
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Stress corrosion cracking and corrosion of carbon steel in simulated fuel-grade ethanol
… ethanol or blended fuel is the potential corrosion and stress corrosion cracking (SCC) susceptibility of carbon steel pipelines in these environments. Both phenomenological and mechanistic investigations have been carried out in order to address the possible degradation phenomena of X-65 …
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Selection and implementation of deterministic and probabilistic models for the prediction of stress corrosion cracking in used nuclear fuel containment material
… corrosive environment in stainless steels. If a stress is present on or in then material, stress corrosion cracking (SCC) could be a possibility. Because the canister welds are not stress-relieved in order to avoid sensitization of the steel, residual stresses are expected to be present in the …
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Effect of residual stress on the life prediction of dry storage canisters for used nuclear fuel
… moisture and chloride ions that can cause stress corrosion cracking (SCC). Residual stresses from the welding process provide the tensile stress for crack initiation and propagation which could eventually compromise canister integrity, allowing the release of radioactive material to the …
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COMSOL finite-element analysis : residual stress measurement of representative 304L/308L weld in spent fuel storage containers
… time they will be viable for storing spent fuel. Stress corrosion cracking (SCC) is a concern in these canisters if they are exposed to an aqueous, chloride-containing film. Canisters are fabricated using a concrete overpacking, along with austenitic stainless steel on the inside which is welded …
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Stress Corrosion Cracking of a Transformation Induced Plasticity Fe39Mn20CO20Cr15Si5Al1 High Entropy Alloy
Stress corrosion cracking (SCC) is a materials degradation phenomenon in which a susceptible material (metal) fails below its yield strength in a brittle manner because of the concomitant effect of a tensile load and a corrosive environment. After achieving a critical crack length, the component …
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Influence of heat treatment condition on the stress corrosion cracking properties of low pressure turbine blade steel FV520B
Stress corrosion cracking (SCC) is a corrosion phenomenon which continues to plague the power generating industry especially in low pressure (LP) steam turbine blades operating in the phase transition zone. An investigation has therefore been conducted to examine the effect of heat treatment …
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