What is stress corrosion cracking?
Stress corrosion cracking (SCC) is a phenomenon where the combination of tensile stress and a corrosive environment leads to the formation of cracks in a material. It typically occurs in metals and alloys and can weaken structural integrity. SCC is often found in industries such as oil and gas, chemical processing and nuclear power. The cracking process is influenced by factors such as material composition, applied stress levels, and the specific corrosive environment present.
News on stress corrosion cracking
Below you can find a selection of news and articles related to stress corrosion cracking in stainless steels. If you wish to contribute with your case study on stress corrosion cracking, please contact the Stainless Steel World editor
Duplex and lean duplex meet the most demanding needs by offering a superior combination of high strength, corrosion resistance, and lowered life cycle costs....
PVI introduces new generation of compact water heaters that deliver high-efficiency, superior reliability, and advanced combustion controls.
Centurion is a compact, 2000 MBH direct-fired domestic...
Caustic soda (NaOH) is widely used in industry, and at lower temperatures and concentrations carbon steel is commonly used. However, at higher concentrations and temperatures the corrosion rate increases, and there is a significant risk of caustic stress corrosion cracking (SCC).
From now on, interested business customers and existing customers of MODERSOHN® can purchase standard parts and fastening accessories, especially made of Lean Duplex 1.4362 and Duplex 1.4462, in the new online store.
During the long-term service of nuclear power plants, the duplex stainless steel (DSS) plate in the spent fuel pool ages. Its failure mechanism is mainly uniform corrosion, stress corrosion cracking (SCC) and pitting corrosion, which poses a serious threat to the safe operation of nuclear power plants. Repairs are usually done by underwater welding technology to reduce the equipment maintenance costs and exposure to radiation.
Nickel has figured prominently in metallurgy news of late because of its importance to the electric vehicle industry and to the battery storage of renewable energy.
Until quite recently, materials development was often thought to be a mature discipline.
The main reason for using lean duplex is its significant resistance to chloride stress corrosion cracking because of its dual phases.
The main reason for using lean duplex is its significant resistance to chloride stress corrosion cracking because of its dual phases.
Since their inception, Nippon Steel Corporation has been consistently raising the bar as a leading manufacturer with a wide range of world-leading capabilities, including the manufacture of seamless stainless steel pipes.
The dangers of SCC
Stress corrosion cracking (SCC) is a complex and potentially catastrophic phenomenon that occurs when a combination of tensile stress, a corrosive environment, and a susceptible material interact. Unlike traditional corrosion, which is a gradual and uniform degradation of a material, stress corrosion cracking involves the formation and propagation of cracks, often leading to sudden failure.
Stress corrosion cracking commonly affects metals and alloys, such as stainless steels, aluminum alloys, and nickel-based alloys. It can occur in various industries, including oil and gas, chemical processing, aerospace, marine, and nuclear power.
The specific mechanisms behind stress corrosion cracking are complex but certain conditions are known to promote its occurrence. These include the presence of a corrosive environment (e.g., chloride ions in aqueous solutions), applied tensile stress, and material susceptibility. The combination of these factors leads to crack initiation, propagation, and eventual failure.
Cracks associated with stress corrosion failure can develop in different patterns, such as intergranular, transgranular, or a combination of both. The cracks may follow grain boundaries or propagate through the grains of the material. Stress corrosion is often difficult to detect because it can occur internally, hidden from visual inspection.
Can you prevent stress corrosion cracking?
Preventing stress corrosion cracking involves understanding and controlling the factors that contribute to its initiation. Strategies include material selection, minimizing tensile stress levels, applying protective coatings, utilizing corrosion inhibitors, and maintaining appropriate environmental conditions. Regular inspections, non-destructive testing, and monitoring are crucial to identifying early signs of stress corrosion cracking and preventing catastrophic failures.
