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Question

Austenite is a solid solution of carbon in ________ iron.

A.

alpha  

B.

beta

C.

gamma           

D.

delta

Answer ( Option C)

gamma           

Solution

●Austenite is a solid solution of ferrite and iron carbon in gamma iron which is formed when steel contains carbon upon 1.8%  at .

●The basic crystal structure of austenite is FCC.

Hence, the correct option is (C).

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