iron carbon equilibrium diagram

Which of the following is not found in iron-carbon equilibrium diagram?

• A. Curie point

• B. Peritectic point

• C. Eutectic point

• D. Eutectoid point

What is the carbon % avaiable in Eutectic Reaction?

• 0.8

• 4.3

• 6.67

• 0.2

Eutectoid Reaction occur at which temperature point?

• 723

• 910

• 1400

• 1539

In which invariant reaction, single solid transformed in to two different solids?

• Eutectic

• Eutectoid

• Peritectic

• Non of them

Above this temperature, solid phase of pure iron is transformed in to Liquid phase.

• 723

• 910

• 1400

• 1539

------ is Soft and ductile.

• Ferrite

• Cementite

• Autenite

• Liquid

-----is brittle and hard.

• Ferrite

• Cementite

• Austenite

• Liquid

Austenite has ---------Lattice structure

• BCC

• BCT

• FCC

• HCP

Ferrite and Cementite Produces-------

• Pearlite

• Ledeburite

• Austenite

• None of them

Iron carbon phase diagram is

• tertiary system

• binary system of iron and carbon

• only iron composition

• only carbon composition