engineering-materials-and-metallurgy.pdf

7/27/2019 Engineering-Materials-and-Metallurgy.pdf

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DHANALAKSHMI SRINIVASAN ENGINEERING COLLEGE

DEPARTMENT OF MECHANICAL ENGINEERING

ENGINEERING MATERIALS AND METALLURGY

QUESTION BANK

UNIT-1

(CONSTITUTION OF ALLOYS AND PHASE DIAGRAMS)

PART-A (2 Marks)

1. Define solid solution.

2. Name the types of solid solution.3. State the factors governing substitution solubility.4. Name the classification of intermediate phase.

5. Explain Gibbs phase rule

6. Draw and explain unary phase diagram7. Draw and explain classification of binary phase diagram8. State the application of phase diagram9. Draw various points in IronCarbide equilibrium diagram

10. State phases in iron-carbide diagram

PART-B (16Marks)

1. Explain various points in ironcarbide equilibrium diagram

2. State and explain phases in iron-carbide diagram3. Name and explain the constitutes in steels4. Draw the microstructure of plain carbon steel

5. Draw the microstructure of plain carbon steel6. Draw the microstructure of gray cast iron

UNIT-II

(HEAT TREATMENT)

PART-A (2 Marks)

1. Define heat treatment2. State the objectives of heat treatment3. Explain heat treatment process4. Define critical cooling rate

5. Define hardenability

6. What you meant by tempering7. What you mean by normalizing?8. What is age and air hardening

9. What are the stages of tempering process10. What is back carburizing process


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PART-B (16Marks)

1. Explain full annealing process

2. Explain stress relief annealing process3. Differentiate between annealing and normalizing4. Explain the procedure of performing hardening

5. Explain age and air hardening6. Explain the stages of tempering process

7. Explain back carburizing process8. Explain flam hardening with neat diagram

9. Explain induction hardening with neat diagram10. Draw and explain salient points of isothermal transformation diagram11. Draw and explain various points in TTT diagram

UNIT-III

(MECHANICAL PROPERITES AND TESTING)

PART-A (2 Marks)

1. What are the types of mechanical properties?2. Define the term elasticity3. Define a) Hardness b) Plasticity c) Ductility

4. Define a) Brittleness b) Toughness c) Stiffness5. Differentiate between toughness and resilience

6. Define the term creep

7. What is the importance of creep?8. What are some important types of strength?9. Define the terms a) Elastic strength, b) Plastic strength10. Define tensile strength and compressive strength

11. Define the terms shear strength, torsional strength

12. What are types of technological properties?13. Differentiate between malleability and machinablity.14. Differentiate between weldablity and castablity.

15. What are the common metals have malleability?

16. What are the factors affecting machinability?17. What are the some common metals have weldablity?

18. What are the various factors affecting formability?19. Define the term castablity.20. What are the factors affecting mechanical properties of a metal?

21. What is meant by plastic deformation

22. Define the term slip

23. Describe mechanism of slip24. Define twinning25. What are types of twinning?

26. Describe mechanism of twinning?27. Differentiate between slip and twinning28. Write down the classification of imperfections

29. Define point defects30. Define vacancies.

31. What is meant by Frenkel defect?


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32. What is meant by Schottky defect?33. Define electronic defects

34. Define the term line defects

35. What the types of dislocation and explain briefly?36. Distinguish between edge dislocation and screw dislocation37. Define the term plane defects

38. What are types of stacking fault?39. Define the term tilt boundary

40. Define volume defects41. What is meant by fracture?

42. What are the types of fracture?43. What are the two main reasons for ductile fracture is preferred over brittle fracture?44. Define cup and cone fracture.

45. Differentiate between ductile and brittle fracture46. Define the term fatigue47. What are the stress cycles for fatigue testing?48. What factors affect the fatigue failure of a structural part?

49. What is the use of SN curve?50. What are the factors affecting fatigue life?51. What are the factors affecting creep?52. In what important ways does the Rockwell hardness test differ from Brinell test?

53. Define hardness test.54. Name any three important mechanical tests which will give valuable information about

metals and alloys

PART-B ( 16 Marks)

1. Explain with neat sketch of Rockwell hardness test

2. Explain in details of Knoop micro hardness test.

3. Explain with neat sketch of impact test4. Explain with neat sketch of grain boundaries5. Explain with neat sketch of shear test.

6. Explain with neat sketch of screw dislocation

7. Explain crystal defects or crystal imperfections8. Explain with neat sketch of brittle fracture

9. Explain with simple sketch of shearing fracture10. Explain with simple sketch of mechanism of creep11. Explain the term creep fracture

12. Explain with neat sketch of fracture toughness

13. Describe briefly with neat sketch of Griffith theory

14. Describe the equipment necessary for fatigue testing15. What is creep? Give some examples of equipment in which creep is likely to be

encountered.

16. What are types of creep? Explain in detail17. Describe how tensile test is carried out in the laboratory?18. Distinguish between Brinell hardness test and Vickers hardness test

19. What are the applications of hardness test?20. Differentiate between Izod and Charpy test


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UNIT-IV

(FERROUS AND NON FERROUS METALS)

PART-A (2 Marks)

1. How ferrous materials are classified2. State the manufacturing method of steel

3. What are classifications of steel?4. Name some ferrous materials

5. Explain big iron production process6. Wright down the properties of wrought iron

7. Brief about effect of impurities on cast iron8. Write down the composition of spheroidal cast iron9. Name some non- ferrous metals

10. Name some magnesium alloys11. State the properties of Tin

PART-B (16Marks)

1. Explain aluminum manufacturing process2. Explain monal metal3. Name some Titanium alloys

4. Explain precipating hardening process5. State the requirements of bearing

6. Name and explain various bearing materials used production of bearing

7. Explain HSLA steels8. Explain maraging process

UNIT-V

(NON-METALLIC MATERIALS)

PART-A (2 Marks)

1. Define the term polymer

2. What are the characteristics of polymer

3. Define the term syndiotatic and atactic polymers4. Explain elastomer

5. What is meat by polymerization6. What are some naturally occurring non-metallic materials and have been used for

engineering application

7. What is primary of atomic bonding within polymers

8. What is degree of polymerization

9. What does mean why polymers Crystallizes10. What are some of the ways that a thermoplastic polymer can be made stronger?11. Why the thermosetting characteristically brittle?

12. What are technique of copolymerization13. What are the common types of plastics14. Describe poly ethylene

15. Write down the properties of poly ethylene16. Write down the application of poly ethylene

17. Polyethylene are dues for house hold goods, why is this so?


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18. Describe polystyrene19. What some properties and application of polystyrene

20. What do the term polyvinyl chloride

21. Why PVC has preferred22. Write down the properties application of PVC23. What are the properties of polycarbonate

24. What are application of polycarbonate25. What is the polyamide

26. What is an acrylonytryl butadiene styrene27. Why ABS is preferred engineering application

28. What are some limiting properties and application of ABS29. What is an polyamide30. Why plenitude is preferred in industrial high performance thermo plastic

31. What are some industrial use of polyamides as laminations32. What is polyamide- imides33. What is an poliphenyline oxide34. What is poliphenyline sulphide

35. What are the purpose of uses in peek36. What is poltytetra ethylene tefflon37. What is an urea formaldehyde38. What is meant by phenyl pharmoldihide

39. What is the common name given for ceramic material in the non-crystalline oramorphous state

40. Why are crystal structure of ceramics frequently more complex than those observed for

metals41. What is the dominant properties of refractory ceramics42. What are the some important application of ceramics43. What are some specific materials are classified as structural ceramics

44. What are some common types ceramics

45. What are dominant properties of ceramic abrasives46. Why do most ceramic materials fails to posses their theoretically high tensile strength47. What is the cermet and concrete

48. What are two basic classes of ceramic material and does the processing differ

49. What are glass ceramics?

PART-B ( 16 Marks)

1. Differentiate between thermoplastic and thermosetting plastic

2. Describe and differenciates addition polymerization and condensation polymerization

3. Describe the term polyphylene terophthalate

4. Describe polypropylene and Write the properties application of poly propylene5. What are some outstanding properties of ceramic materials?6. Describe the term poletherether ketone

7. What are some special heat treatment operation performed on glass products?8. Describe about abrasives9. How might plastic be defined from the view points of chemistry, structure, fabrication and

processing?

engineering-materials-and-metallurgy.pdf

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