Question

the hardest phase in iron-iron carbide diagram​

Answer 1

Answer:

Definition of structures:  Cementite or iron carbide, is very hard, brittle intermetallic compound of iron & carbon, as Fe3C, contains 6.67 % C.  It is the hardest structure that appears on the diagram, exact melting point unknown.  Its crystal structure is orthorhombic.  It is has  low tensile strength (approx.

Explanation:

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Answer 2

Definition of structures:  Cementite or iron carbide, is very hard, brittle intermetallic compound of iron & carbon, as Fe3C, contains 6.67 % C.  It is the hardest structure that appears on the diagram, exact melting point unknown.  Its crystal structure is orthorhombic.  It is has  low tensile strength (approx.)