Menu
Home / GATE 2017-2018 / GATE Metallurgical :: Discussion

Discussion :: GATE Metallurgical

  1. A steel specimen containing 0.2 wt.% C is carburized in an atmosphere that maintains a carbon content of 1.2 wt.% C at the surface of the specimen. 
    Given: For carbon diffusion in austenite: D0=2.0×10-5 m2/s 
    Activation energy for diffusion, Q=142 kJ/mol

    How long (in h) will it take to double the depth at which 0.4 wt.% C is reached?
    2. A.
    40
    B.
    20
    C.
    18
    D.
    14

    View Answer

    Workspace

    View Answer

    Answer : Option A

    Explanation :

    -NA-

Write your comments here:

Be The First To Comment