Chemistry, 22.08.2019 16:20 RebeccaBloop8578

Choose the method that will make the microstructure of spheroidite in an iron and carbon steel with eutectoid composition.
start at 900c then cool slowly. afterwards reheat to 800c for over a day.
start with a tempered martensite and heat to 700c for over a day.
start at 900c then cool slowly. afterwards reheat to 700c for over a day.
start with a pearlite and heat to 800c for over a day.

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