Which of the following phase of steel is NOT present in Iron-Carbon phase diagram?

This question was previously asked in
ISRO VSSC Technical Assistant Mechanical 14 July 2021 Official Paper
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  1. Ferrite
  2. Cementite
  3. Austenite
  4. Martensite

Answer (Detailed Solution Below)

Option 4 : Martensite
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Detailed Solution

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Concept:

The iron-carbon phase diagram is shown below,

The phase diagram has all four phases austenite, ferrite, pearlite, cementite but not martensite.

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