【Basic Knowledge 26】What is stress corrosion cracking? (Prize quiz)
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What is stress corrosion fracture? The phenomenon of low-stress brittle fracture that occurs in metals after a period of time under the combined action of tensile stress and specific chemical environments is known as stress corrosion fracture.
Stress corrosion refers to the degradation of metals in a corrosive environment under tensile stress. This type of corrosion generally passes through the grains, namely so-called transgranular corrosion. Stress corrosion is a material failure process resulting from the combined effect of strain and corrosion caused by residual or applied stress. The fracture of a material caused by stress corrosion is known as stress corrosion fracture. Three conditions: a specific corrosive medium. A certain tensile stress. Composition and microstructure of the material.
Stress corrosion cracking (SCC) is a metal failure phenomenon caused by the combined effect of stress and a corrosive environment. It has three main characteristics: ① Stress corrosion fracture is a function of time. The greater the tensile stress, the shorter the time required for fracture ； The stress required for fracture is generally lower than the yield strength of the material. Such stresses include those generated by external loads, residual stresses, and wedge-shaped stresses caused by corrosion products. ②The corrosive medium is specific; stress corrosion cracking occurs only in certain metal-medium combinations (see table). In the absence of stress, the corrosion rate of metal in its specific corrosive environment is minimal. ③The fracture speed lies between pure corrosion and pure mechanical failure, and the fracture surface is generally of a brittle type.
What is stress corrosion fracture? Stress corrosion fracture is the failure of metals that occurs under the combined action of tensile stress (or compressive stress) and a corrosive environment
The fracture of a material caused by stress corrosion is known as stress corrosion fracture; it is a metal failure phenomenon resulting from the combined action of stress and a corrosive environment.
Metal undergoes fracture failure under the combined action of tensile stress (or compressive stress) and corrosive media.
What is stress corrosion fracture? Answer: Stress corrosion fracture is a metal failure phenomenon caused by the combined effect of stress and a corrosive environment. The low-stress brittle fracture that occurs after a period of time is known as stress corrosion fracture.
Metal undergoes fracture failure under the combined action of tensile stress (or compressive stress) and corrosive media.
Metal undergoes fracture failure under the combined action of tensile stress (or compressive stress) and corrosive media. In stress corrosion cracking, the combination of material and environment is specific
Metals undergo fracture failure under the combined action of tensile stress (or compressive stress) and corrosive media