Abstract
Quick malleable cast irons which contain nickel and copper were studied in the present report. The result was as follows:
Nickel promotes the graphitization of combined carbon. Quick malleable cast irons which contain more than 2% nickel, have somewhat lower tensile and impact strength. The reason is presumed to be due to the small and flaky form of the temper carbon of nickel bearing malleable cast iron.
Copper, On the other hand, has a tendency to produce a nodular form of temper carbon. Quick malleable cast irons, alloyed with copper, have superior tensile and impact strength. The influence of copper on the annealing time was also studied.
