RGPV Exams Question papers – B.E. (fourth semester)- Material science and engineering materials – Dec-2004

B.E. (fourth semester) EXAMINATION, Dec, 2004

(Mechanical Engg. Branch)

(MATERIAL SCIENCE AND ENGINEERING MATERIALS)

ME-403/4505

Note:      Attempt any five questions. All question carry equal marks. Draw neat Sketches wherever

necessary. To the point answer and illustration with neat diagram will be given credit.

1. (a)     Define atomic Packing factor (A.P.F.) obtained its expression for S.C., B.C.C. and F.C.C.

(b)        What are 14 braves’ unit sales? Illustrate with neat sketch

2. (a)    Explain the deformation polycrystalline materials.

(b)       What is cold working? Name cold working process. What is the effect of cold working on

Properties? Give limitation and Precaution in cold working.

3. (a)   Explain in brief phase rule with net sketch explain the cooling curve of pure metal . Using first

principle explain on brief the construction of a binary equilibrium diagram

(b)     What is T.T.T. diagram and explain the importance of T.T.T. diagram? Also give the various steps

involved in constructing a T.T.T. diagram.

4. (a)  Explain full annealing process and normalizing

(b)     What is reaction curve? How is it useful in the construction of T.T.T. diagram? List of the barriers

Heat treatment process of steel

5. (a)  What is tempering? What is the propose of tempering steel?

(b)     What are the application and properties of phosphor bronze? Also explain various types of Brasses

in brief.

6. (a)  Explain the following with respect to heat treatment of aluminum:

(i)   Age hardening

(ii) Precipitation hardening

(iii)  Solution treatment

(B)           Explain the following

(i) Flame hardening

(ii) Induction hardening

7. (a)  With the help of a neat sketch show various reaction zones in the blast furnace. What are the uses

of wrought Iron? What is the effect of impurity In iron ores?

(b)  Explain the following:

(i)  Aluminum bronze     (ii) Silicon bronze     (iii) Naval brass

8. (a)  Write shorts notes on any four of the following.

(i)  Thermoplastic And thermosetting plastic

(ii) Polymers’. Plastics and elasmotors

(iii) F.R.P.

(iv) Fatigue failure of a material

(iv) Mechanism of creep

(b) Give brief description of refractory’s, their classification, properties and uses in engineering

Happlication.

 

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