When gray iron castings are ____, an outer surface of white cast iron results.
A) heated rapidly
B) polished chemically
C) chilled rapidly
D) immersed in solvents
E) none of the above

Question

Quizplus · Accepted Answer

When gray iron castings are chilled rapidly, an outer layer of white cast iron forms due to the carbon in the iron being quickly transformed into cementite. This process is known as white iron chilling.

When Gray Iron Castings Are ____, an Outer Surface of White