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Reg.No:

1. (a) Metals A and B having meeting points respectively 270 C and 320 C are assumed to be

completely soluble in the liquid state and completely insoluble in solid state. They form

eutectic at 140C containing 40% B.

(i) Draw the equilibrium diagram and label all lines and areas and (6)

(ii) For an alloy containing 30% A give the temperature of initial and final solidification

and relative amounts of phases present at 180C (6)

(b) Discuss HumeRothery rules for the formation of solid solution. (6)

(c) Define Peritectic and Eutectoid reaction (2)

(or)

2. (a) Draw the ironiron carbide equilibrium diagram and Label the phases and important

phase reactions using the diagram, discuss the development of microstructure of 0.4% C

steel from liquid state to room temperature. (12)

(b) Discuss in detail the microstructure, properties and application of

medium carbon steel and spheroidal graphite iron. (6)

(c) Discuss the classification of steel. (2)

Regulation - 2010

K.S.RANGASAMY COLLEGE OF TECHNOLOGY,TIRUCHENGODE637 215

(Autonomous)

------------------------END SEMESTER EXAMINATION

Programme B.E. Mechanical Engineering Semester 3

Course code

& Title10 ME 303Engineering Materials and Metallurgy

Max.marks 100

Duration 3 Hours

Answer the questions 5 X 20 = 100 Marks

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3. (a) Using the Isothermal transformation diagram of eutectoid steel, discuss the austeniteto

pearlite transformation. (8)

(b) Explain the hardening and tempering process with respect to heat treatment

procedure, microstructure and mechanical properties. (8)

(c) What is Spheroidize annealing process? (2)

(d) The normalized steel is found to be superior to that of annealed steel. Why? (2)

(or)

4. (a) Explain how Jominy end quench test is used for determining

the hardenability of steels. (8)

(b) Explain in detail the flame hardening and induction hardening. (6)

(c) Distinguish between austempering and martempering. (6)

5. (a) Discuss the influence of each of the following alloying elements on the properties of steel

(i) Molybdenum (ii) Chromium (iii) Vanadium (iv) Titanium (8)

(b) What are HSLA Steels? How can high strength and toughness be obtained in them? (4)

(c) Give the composition, property and uses of SG Iron, 18-4-1 H.S.S and Monel metal (8)

(or)

6. (a) With part of phase diagram and relevant sketches, explain the precipitation

hardening treatment of Al base alloys. (8)

(b) What are Cupronickels? What are their properties and application? (8)

(c) Write the typical composition of brass and bronze. (2)

(d) Name the property requirements of bearing alloys. (2)

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7. (a) Explain the structure, properties and application of Al2 O3 (8)

(b) Bring out the details of formation of fiber reinforced and particulate

reinforced composites, giving their specific features and application. (10)

(c) List the important engineering ceramics and its application. (2)

(or)

8. (a) Describe the various stages involved in the production of a component by the

powder metallurgy process. Under what circumstances this process would be used in

preference to any other? (8)

(b) List the important characteristics of metal powders. (4)

(c) Name the various methods of production of metal powders. Explain any two. (8)

9. (a) Write a short note on preparation of specimen for microscopic examination. (4)

(b) What are the different hardness test interests to the testing engineer?

under various situations. (6)

(c) Draw a typical Creep test curve, Showing different stages of elongation for a long time

high temperature creep test, State the information is helpful to the designer. (10)

(or)

10. (a) Describe the fatique test with a suitable sketch. Also briefly

discuss the S-N Curve. (10)

(b) Give an account on deformation by twinning. (4)

(c) Describe the slip mechanism involved in metal deformation. (6)

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