Thursday, July 16, 2015

AU PTML8251 ENGINEERING MATERIALS AND METALLURGY 2014 Question Paper

Previous Years Question Papers of Anna University Chennai
B.E / B.Tech (Part Time) DEGREE END SEMESTER EXAMINATIONS, APRIL / MAY 2014
B.E. MANUFACTURING ENGINEERING
II Semester
PTML8251 ENGINEERING MATERIALS AND METALLURGY
(Regulation 2013)
Time: 3 Hours Answer ALL Questions ^ Max. Marks 100
PART-A (10 x 2 = 20 Marks)
1. Define ferrite and cementite in Fe-C alloys .
2. Differentiate between grey cast iron and malleable cast iron ^
3. Define Critical Cooling rate
4. What is meant by "heat treatment"? and its purpose
5. What are the important copper alloys?
6. What is the main strength mechanism in high strength aluminum alloys?
7. Name any two polymers and state their applications
8. Mention any four attractive properties of engineering ceramics
9. Write types of fractures.
10. Mention some of the disadvantages of Brinell hardness test
Part - B ( 5 x 16 = 80 marks)
11. What are cooling curves? Draw the cooling curve of an off eutectic binary alloy?
Compare between substitutional and interstitial solid solution?
12. a) (i) What is hardenabHity? Describe a test that is used for determination of hardenability of steel. (10)
(ii) Explain the different types of tempering process. (6)
(OR)
b) Write short notes on:
1. Carburizing (4)
2. Nitriding (4)
3. Cyaniding (4)
4. Carbonitriding.(4)
13. a) Discuss the composition, properties & typical application of any four copper alloys
(OR)
b) Write short notes on:
(i) Gray C.I (4)
(ii) White C.I (4)
(iii) Malleable C.I (4)
(iv) Spheroidal graphite Cl(4)
14. a) Write short notes on :
(i) Ceramics (6)
(ii) Urea Formaldehyde (5)
(iii) Phenol Formaldehyde. (5)
(OR)
b) Explain the following terms with respect to polymers
(1) Mechanical behavior
(2) Thermal behavior
(3) Electrical behavior.
15. a) What are the different types of fractures in metallic materials? Give the important features of these fractured surfaces. What is the use of this study
(OR)
b) (i)Explain the testing procedure of Vickers hardness test
(ii) Explain the testing procedure for Creep strength
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