Which of the following must not be used to prevent fatigue fracture?
(a) Decarburization
(b) Nitriding
(c) Polishing
(d) Shot peening
The question was asked in an internship interview.
My doubt stems from Fracture Toughness, Protection against Fracture in division Imperfection in Metal Crystals, Fracture, Corrosion and Oxidation of Engineering Material & Metallurgy