Engineering Materials
In spheroidising process, the steel is

Heated below the lower critical temperature and then cooled slowly
None of these
Heated slightly above the lower critical temperature and then cooled slowly to a temperature of 600°C
Heated up to the lower critical temperature and then cooled in still air

ANSWER DOWNLOAD EXAMIANS APP

Engineering Materials
Recrystallization temperature is one

At which crystals first start forming from molten metal when it is cooled
At which change of allotropic form takes place
At which crystals grow bigger in size
At which new spherical crystals first begin to form from the old deformed one when a strained metal is heated

ANSWER DOWNLOAD EXAMIANS APP