Exam Question
Explain the following terms and give examples of where each condition might occur.
(a) Stress corrosion cracking. (6)
(b) Creep cracking. (5)
(c) Corrosion fatigue (5)
Class 4 (4th Engineer)
MEKG
📅 Oct 2022
Reference Answer
### (a) Stress Corrosion Cracking (SCC)
Stress Corrosion Cracking (SCC) is a highly damaging and insidious form of material degradation that occurs due to the synergistic action of three critical factors:
* **Definition**: It is the premature brittle fracture of a normally ductile material under static or slowly changing tensile stress, in the presence of a specific corrosive environment to which the material is susceptible.
* **Mechanism**: The process typically involves:
Stress Corrosion Cracking (SCC) is a highly damaging and insidious form of material degradation that occurs due to the synergistic action of three critical factors:
* **Definition**: It is the premature brittle fracture of a normally ductile material under static or slowly changing tensile stress, in the presence of a specific corrosive environment to which the material is susceptible.
* **Mechanism**: The process typically involves:
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