please solve not another example with same steps Estimate th

please solve, not another example with same steps

Estimate the AISI designation number for steels having the following microstructures. (a) 48% pearlite_ 52% primary ferrite (b) 73% pearlite_ 27% primary cementite (c) 92% ferrite_ 8% cementite (d) 80% ferrite_ 20% cementite

Solution

(a) 48 = [(0.77 - x)/(0.77 - 0.0218)] * (100)

x= 0.41% AISI NO: 1040 steel

(b) 73 = [(0.77- x)/(0.77 - 0.0218)] * (100)

x= 0.22% AISI NO: 1025 steel

(c) 92 = [(6.67 -x)/(6.67 - 0.0218)] * (100)

x = 0.554% AISI NO: 1055 steel

(d) 80 = [(6.67- x)/(6.67 - 0.0218)] * (100)

x = 1.35% AISI NO:10100   

x = carbon percentage