From the iron-carbon phase diagram, which of the following phasesphase combinations is present for a steel composition of 0.7wt

From the iron-carbon phase diagram, which of the following phases/phase combinations is present for a steel composition of 0.7wt % C at 700°C

A.Pearlite Cementite

B.α Pearlite

C.α Cementite

D.γ Cementite

正确答案：α Pearlite；α Cementite