Engineering Materials
In process annealing, the hypo eutectoid steel is

Heated from 30°C to 50°C above the upper critical temperature and then cooled suddenly in a suitable cooling medium
Heated from 30°C to 50°C above the upper critical temperature and then cooled slowly in the furnace
Heated below or closes to the lower critical temperature and then cooled slowly
Heated from 30°C to 50°C above the upper critical temperature and then cooled in still air

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Engineering Materials
Specify the sequence correctly

Stress relief, recrystallization, grain growth
Grain growth, stress relief, recrystallization
Stress relief, grain growth, recrystallization
Grain growth, recrystallization, stress relief

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