JNTU Question Papers Physical Metallurgy 1st Sem Nov 2008

JNTU Question Papers

Physical Metallurgy 1st Sem Nov 2008

SET-3

 

 

 

1. (a) Give an account on resolution and depth of field.

(b) Name the characteristics that can be measured using polarized light and discuss. [8+8]

 

2. (a) Define octahedral and tetrahedral sites and discuss with reference to BCC and

FCC structures.

(b) Give an account on bonding and material property. [8+8]

 

3. (a) Give an account on Miller indices of planes with examples.

(b) Explain Miller indices of direction with examples. [8+8]

 

4. (a) Find out electron-to-atom ratio for the following compositions.

Ag3Al, Cu5Zn8, Cu9Al4, CuZn3 and Cu3Sn

(b) Discuss various types of solid solutions. [8+8]

 

5. (a) Explain why is the grain boundary irregular.

(b) Distinguish clearly between low angle, grain boundary and high angle grain

boundary. [6+10]

 

6. (a) Draw a typical Equilibrium diagram for 2 metals completely soluble both in

liquid & solid states. Label the important points, lines and areas in it.

(b) Explain cooling of any one alloy from the above system. [9+7]

 

7. (a) Classify copper alloys. Discuss the mechanism of increasing strength of copper

alloys.

(b) Calculate the relative amounts of various phases that are present in 0.5% C

steel, just above & just below the peritectic temperature. [8+8]

 

8. (a) Differentiate between CCC & TTT diagrams.

(b) Explain about the bainitic transformation. [10+6]

 

 

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