Question

Which of the following is/are the facts that indicate the reduction in fatigue resistance of metal?

(a) Corrosion pits act as stress raisers

(b) Corrosion pits act as initiate cracks

(c) Corrosion pits act as a stress raiser and initiate cracks

(d) Corrosion pits neither act as stress raiser nor initiate cracks

This question was posed to me in quiz.

My enquiry is from Eight Forms topic in chapter Eight Forms of Corrosion of Corrosion Engineering

Answer 1

Right option is (c) Corrosion pits act as a stress raiser and initiate cracks

Easy explanation: Corrosion fatigue is the combination of both corrosion and fatigue simultaneously. Fatigue resistance is reduced because corrosion pits act as stress raisers and initiate cracks.