engineering recuitment UPPSC AE Mock Test 2024 Engineering Materials Science Structure and Properties of Engineering Materials Phase Diagrams
Which of the below statements is incorrect regarding Iron-carbon diagram?
1
α - ferrite is relatively soft, may be made magnetic at temperature below 768° C and has a density of 7.88 g/cm3
2
Addition of silicon to cast iron greatly accelerates the cementite decomposition reaction to form graphite
3
The microstructure of alloys having carbon content less than the eutectoid composition are composed of a Proeutectoid ferrite phase in addition to the pearlite.
4
None of the above