Which of the following alloys exhibits intergranular corrosion by steam and marine atmospheres?
(a) Die-cast zinc alloy
(b) Duralumin alloy (Al-Cu)
(c) Both die-cast zinc alloy and duralumin alloy
(d) Neither die-cast zinc alloy nor duralumin alloy
This question was posed to me in a national level competition.
Asked question is from Eight Forms in chapter Eight Forms of Corrosion of Corrosion Engineering