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Different Phases in Fe-Fe3C Phase Diagram

   

Added on  2023-06-12

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Solution
a)
Different Phases in Fe-Fe3C Phase Diagram_1
Different Phases in Fe-Fe3C Phase Diagram_2
b)
Ferrite:
Solid solution of carbon in BCC iron from room temperature to 910 deg.C
Max solubility of C is .. 0.022% at temp. of 727 deg.c
Also called as Alpha Ferrite.
Softest phase in Fe-Fe3C phase diagram.. less strength and High ductility
Cementite:
Intermetallic compound of Carbon combined with Iron..Fe3C
Max solubility of Carbon is of 6.67%.
Orthorhombic crystal structure
Different Phases in Fe-Fe3C Phase Diagram_3
Hardest and most brittle phase among all Fe-Fe3C phases.
Austenite:
Solid solution of Carbon in FCC iron..Also called as Gamma Iron.
Exists from 910–1395 deg.C
Max solubility of Carbon .. 2.11% at 1147 deg.C
Toughest phase among all... Strength along with optimum Ductility
Pearlite:
Mixture of Ferrite and Cementite (alternately arranged as like pearls)
we can find 100% pearlite at 727 deg.C.
Soft Phase than Austenite but posses better strength than Ferrite.
Different Phases in Fe-Fe3C Phase Diagram_4

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