ENGINEERING MATERIALS AND MATERIALS NOTES

K.SIRAJTHEEN A.P / Mechanical Page 1
MAHALAKSHMI
ENGINEERINGCOLLEGE
TIRUCHIRAPALLI – 621213
QUESTION BANK
ME 2253 – ENGINEERING MATERIALS AND METALLURGY
UNIT 1- CONSTITUTION OF ALLOYS AND PHASE DIAGRAMS
PART-A
1. What are the effect of crystal structure and atomic radii on formation of solid solution
between two metallic elements ? ( MAY / JUNE 2006 )
2. Define peritectic & eutectoid reaction ? ( MAY / JUNE 2006 )
3. State the conditions under which two metallic elements will exhibit unlimited solid
solubility ? (NOV/ DEC 2006 )
4. Define terms of ferrite and Austenite in IRON –CARBON ALLOY system ? (NOV/ DEC
2006 )
5. Distinguish between Hypo Eutectoid steels and hyper eutectoid steels ?( MAY/ JUNE
2007 )
6. Define peritectoid reaction ? ( MAY/ JUNE 2007 )
7. What is the substitutional solid solution ? give two examples ( NOV/DEC 2007 )
8. Give an example of Eutectoid reaction ? ( NOV/ DEC2007 )
9. Why carbon solubility is more an Austenite ? ( APR /MAY 2008)
10. List the advantage of alloy steels as compared to plain carbon steels ? ( APR /MAY
2008)
11. What do you mean by Substitutional solid solution? Briefly explain the rules governing
the formation of substitutional solid solution ? ( MAY/ JUN-2009 )
12. Name and explain any one type of binary solid to solid state transformation reaction with
ideal phase diagram ? ( MAY/ JUN-2009 )
13. Define Solid solution ? ( NOV/DEC 2009)
14. How are steels classified ? ( NOV/DEC 2009)
15. What are these interstitial solid solutions and interstitial compounds ? ( APR/MAY 2010 )
16. Differentiate between eutectic and eutectoid phase diagram ? ( APR/MAY 2010 )
17. State peritectic and peritectoid reaction ? ( APR/MAY 2010 )
18. Distinguish Between steels and cast iron . Also classify steel with respect to carbon
percentage ? ( APR/MAY 2010 )
19. Define substitutional and interstitial solid solution ? ( NOV/DEC-2010 )
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20. What is eutectoid reaction ? ( NOV/DEC-2010 )
21. Name the type of solid solution ? name and define them ( NOV/DEC-2010 )
22. What is eutectic reaction ? ( NOV/DEC-2010 )
23. What are the eutectic and peritectic reaction ? Give example ( APR/MAY 2011)
24. Define ferrite and cementite in Fe-C diagram ? ( APR/MAY 2011)
PART B
1) Draw the Iron – Carbon Diagram neatly (MAY /JUNE 2006) (NOV/DEC 2006) (
MAY/JUN 2007) ( APR/MAY 2010 ) ( APR/MAY 2011)
2) Using the iron – carbon diagram predict the micro structure at room temperature of the
carbon steel that contains 0.4%when cooled in furnace ?(MAY /JUNE 2006)
3) Elements A and B melt at 7000
c and 10000
c respectively. Draw a typical isomorphous
phase diagram between the elements A and B(MAY /JUNE 2006)
4) Elements A and B melt at 7000
c and 10000
c respectively . They form a euetectic at
35% A at temperature 5000
c. Draw the typical phase diagram between A and B (MAY
/JUNE 2006)
5) Estimate the carbon content of carbon steel whose microstructure in the annealed
condition shows 75% pearlite and 25% ferrite ? (NOV/DEC 2006)
6) Metal A has melting point of 10000
c. Metal B has melting point of 5000
c. draw Phase
diagram (between the elements of A and B ) for each of the following conditions
(NOV/DEC 2006)
i) The two elements exhibit unlimited solid solubity ?
ii) The alloy system shows formation of two terminal solid solutions and eutectic
reaction point, at 50% A and at 7000
c
iii) The alloy system shows formation of an intermettalic phase with the chemical
formula A2B.
7) Two elements A and B have melting points 8000
c and 6000
c respectively
i) Draw a phase diagram between A and B if they exhibit unlimited solid solubility
ii) Draw a Phase digram between A and B if a eutectic reaction occurs at
composition 40%B and at temperature 4000
c. Assume that the maximum solid
solubity in either case is 5% and the room temperature solubity in either case is
1%( MAY/JUN 2007)
8) What will be the microstructure of a 2.5%C steel at room temperature ? ( MAY/JUN
2007)

9) Metals A and B having melting points respectively 2700
c. and 3200
c are assumed to be
completely soluble in the liquid state and completely in soluble in solid state. They form
euetectic at 1400
c. containing 40%B( NOV/DEC 2007 )
i) Draw these equilibrium diagram and label all lines and areas and
ii) For an alloy containing 30%A give the temperature of initial and final solidification
and relative amounts of phase present at 180
10) With the help of the Fe- C equilibrium diagram describe completely the change that
takes place during the slow cooling of 0.5% carbon steel from liquid state. ( NOV/DEC
2007 )
11) What are the micro- constituents of iron ? Discuss them briefly ?( APR /MAY 2008)
12) How are solid solutions classified ? Give two examples for each . ( APR /MAY 2008)
13) Draw the Fe- Fe3C equilibrium diagram and discuss the different phases and reactions
that takes place in it. ( APR /MAY 2008) ( MAY/ JUN-2009 ) ( APR/MAY 2010 ) (
NOV/DEC-2010 ) ( NOV/DEC-2010 )
14) With the ideal phase diagram, cooling curves and examples, explain the following binary
systems. Also name the system: ( MAY/ JUN-2009 )
i) Two components completely soluble in liquid and completely insoluble in the
solid state
ii) Two components completely soluble in these liquid and completely soluble in the
solid state.
15) Discuss Hume – rothery rules for the formation of solid solutions ( APR/MAY 2010 )(
APR/MAY 2010 )
16) Draw a typical isomprphous phase diagram and explain the structural changes of an
alloy ( say 50%% A & say 50% B ) .Apply lever rules at some temperature in the alpha +
liquid portion for this alloy.( APR/MAY 2010 )
17) Discuss the composition, properties and application of the following cast iron : (
APR/MAY 2010 )
i) Malleable cast iron
ii) Spheroidal cast iron
18) What is the solid solution? Explain the Humerothery rules governing substitutional solid
solution. Draw the isomorphous phase diagram ? ( NOV/DEC-2010 )
19) Explain the classification of steels along with applications? ( NOV/DEC-2010 )
20) What are the different types of cast iron ? Draw the micro structure of any four type of
cast iron. Give any one applications for each ( APR/MAY 2011)

UNIT 2- HEAT TREATMENT
PART A
1. A low carbon steel in the normalised condition is stronger than the same steel in the
annealed condition. why ? ( MAY / JUNE 2006 )
2. Case carburising heat treatment is not generally carried out for medium carbon steels. why ?
( MAY / JUNE 2006 )
3. What is the critical cooling rate in hardening of steels ? (NOV/ DEC 2006 )
4. What is the micro structure of an austempered steel? What is the advantage of
austempering heat treatment ? (NOV/ DEC 2006 )
5. What is the principles of surface hardening in induction hardening process ? ( MAY/ JUNE
2007 )
6. What is the need for providing a tempering treatment after qunch hardening of steels ? (
MAY/ JUNE 2007 )
7. Define cooling rate? ( NOV/DEC 2007 )
8. Can mild steel be induction hardened ? substantiate ? ( NOV/ DEC2007 )
9. What are principal advantage of austempering over conventional quench and temper
methods? ( APR /MAY 2008)
10. Mention the applictios of induction hardening ? ( APR /MAY 2008)
11. Name and explain any one subcritical case hardening treatment ? ( MAY/ JUN-2009 )
12. With heat treatment cycle , explain the conventional normalizing treatment for hyper
eutectoid steel? ( MAY/ JUN-2009 )
13. Define hardness ? ( NOV/DEC 2009)
14. When will you prefer carbonitriding ? ( NOV/DEC 2009)
15. Define critical cooling rate ? ( APR/MAY 2010 )
16. What is the final micro structure in austempering of steels ? ( APR/MAY 2010 )
17. Enumerate any two difference between annealing and normalizing ? ( APR/MAY 2010 )
18. Explain the induction hardening? ( APR/MAY 2010 )
19. Define tempering ? ( NOV/DEC-2010 )
20. Differentiate carburising and nitriding ? ( NOV/DEC-2010 )
21. In a Fe- FeC phase diagram , at what temperature i) FCC austenite forms and ii) delta -
ferrite forms ? ( NOV/DEC-2010 )
22. What is the ferrite ? ( NOV/DEC-2010 )
23. Draw a typical isomorphous diagram and draw the cooling curves of a pure metal and a
solid solution ( APR/MAY 2011)
24. List any two factors that affect hardenability of steels ? ( APR/MAY 2011

PART B
1) Draw a schematic CCT diagram for a carbon steel containing 0.8% carbon. Using this
diagram, Expalin how different cooling curves lead to the
i) Annealing heat treatment (NOV/DEC 2009)(APR/MAY 2010)
ii) Normalising heat treatment ( NOV/DEC 2007)
iii) Hardening heat treatment
iv) Spheroidising (MAY/ JUNE 2006) ( MAY/JUNE 2007) ( NOV/DEC 2007) (
APR/MAY 2011)
2) Explain How jominy end quench test is used for determining the hardenability of steels
(MAY/ JUNE 2006) (NOV/ DEC2006) ( MAY/JUNE 2007) ( NOV/DEC 2007)
(MAY/JUNE 2009)(NOV/DEC 2009) ( APR/MAY 2011)
3) Explain the steps in case carburising of steels (MAY/ JUNE 2006)
4) Draw the schematic isothermal transformation diagram corresponding to 0.8% carbon
steel (NOV/ DEC2006) (MAY/JUNE 2009) ( APR/MAY 2011)
5) Explain the Hardening and tempering process with respect to heat treatment procedure,
microstructure and mechanical properties (NOV/ DEC2006)( APR/MAY 2008)
(NOV/DEC 2009) ( APR/MAY 2010) ( APR/MAY 2011)
6) With the help of TTT diagram explain the following heat treatments applied to an
euetectoid steel
i) Austempering
ii) Martempering
iii) Hardening ( NOV/DEC 2007) (APR/MAY 2008) (NOV/DEC 2009) ( APR/MAY
2010) ( MAY/JUNE 2007)
7) Distinguish between diffusion and thermal surface hardening treatments ( NOV/DEC
2007)
8) EXPLAIN in detail the flame hardening and induction hardening (NOV/DEC 2009)
9) Discuss the different types of annealing process ? ( APR/MAY 2010)
10) WHAT IS CASE HARDENING ? explain the following process :
i) Carburizing
ii) Nitriding (APR/MAY 2010)
11) What is hardenability? Describe a test that is used for determination of hardenability of
steel? ( APR/MAY 2010)
12) Give the process details of full annealing treatment for steels( APR/MAY 2010)

UNIT 3 - MECHANICAL PROPERTIES AND TESTING
PART- A
1. Compare the martensite that is formed in maraging steels with the martensite that is formed
in carbon steels ? ( MAY / JUNE 2006 )
2. What is the main strengthin, mechanism in high strength aluminium alloys ? ( MAY / JUNE
2006 )
3. What are the effect of Chromium And molybdenum in low alloy steels ?(NOV/ DEC 2006ss )
4. Wsshat is the purpose of magnesium treatment in producing S.G iron ? (NOV/ DEC 2006 )
5. Distinguish between Grey cast irons and spheroidal cast iron in terms of microstructure and
mechanical properties ? ( MAY/ JUNE 2007 )
6. What is the composition of 18/4/1 type high speed steel? ( MAY/ JUNE 2007 )
7. List the different types of tool steels ? ( NOV/DEC 2007 )
8. Mention any two aluminium base alloys and their applictions ? ( NOV/ DEC2007 )
9. How does silicon addition influence th properties of steel ? ( APR /MAY 2008)
10.What is the carbonitriding ? ( APR /MAY 2008)
11.Write short notes on the types of stainless steels ? ( MAY/ JUN-2009 )
12.With the composition , properties and application explain a) Tin bonze b) Naval brass ?
( MAY/ JUN-2009 )
13.Name the alloying elements in high speed steel ? ( NOV/DEC 2009)
14.State the application of tool steel? ( NOV/DEC 2009)
15.What are the effects of adding SI in steels ? ( APR/MAY 2010 )
16.Differentiate Brass from Bronze ? ( APR/MAY 2010 )
17.List the parameter that can be determined from the tensile test? ( APR/MAY 2010 )
18.Mention some of the disadvantage of the Brinell hardness test ? ( APR/MAY 2010 )
19.Classify the different hardness testing methods? ( NOV/DEC-2010 )
20.Draw the testing sample diagram for impact testing ? ( NOV/DEC-2010 )
21.What is the purpose of spheroidizing heat treatment ( NOV/DEC-2010 )
22.Define Carburizing ? ( NOV/DEC-2010 )
23.With a simple sketch show the phenomenon of slip in metallic materials ? ( APR/MAY 2011)
24.Define creep of metals? ( APR/MAY 2011)

PART – B
1) Write a short notes on compositions and properties of the steels :
i) Austenitic stainless steels
ii) High speed steels
iii) Martensitic stainless steels
iv) Maraging steels (MAY/JUNE 2006) ( MAY/JUNE 2007) (APR/MAY 2011)
2) How will you classify brasses based on the composition of zinc ? Explain the properties
and applications of the main types of brasses? (MAY/JUNE 2006)
3) Explain the steps involved in precipitation hardening?(MAY/JUNE 2006) ( NOV/DEC
2006) (MAY/JUNE 2007) (NOV/DEC 2007) (MAY/JUNE 2009) ( APR/MAY 2010)
(APR/MAY 2011)
4) Discuss the austenitic stainless steels and martensitic stainless steel with respect to
composition, properties and application( NOV/DEC 2006) (MAY/JUNE 2007)
5) Discuss the strengthening mechanism, composition and properties of anyone types of
maraging steels ( NOV/DEC 2006)
6) What are the alpha brasses and alpha- beta brasses? What are their properties and
applications? ( NOV/DEC 2006) (MAY/JUNE 2007)
7) Explain how a malleabilising heat treatment will convert a white cast iron to a malleable
cast iron (MAY/JUNE 2007)
8) Ferritic stainless steels- composition, properties, Applications (MAY/JUNE 2007)
9) What are the stainless steels ? what are the main characteristics of stainless steels ?
Name different types of stainless steels and their main application ? ( NOV/DEC 2007)(
APR/MAY 2010)
10) What are the HSLA steels? How can high strength and toughness be obtained in them ?
(NOV/DEC 2007) ( APR/MAY 2010)
11) Describe the properties and applications of the following Cu-Zn Brasses, Naval Brass
and Muntz metal (NOV/DEC 2007) ( APR/MAY 2010)
12) Discuss the characteristics of Aluminium and also mention its alloys their properties and
uses ? ( APR/MAY 2008)
13) Discuss the influence of each of the following alloying elements on the properties of
steel:
i) Molybdeum
ii) Chromium
iii) Manganeses
iv) Vanadium
v) Titanium

vi) Tungsten
vii) Silicon (MAY/JUNE 2009)( APR/MAY 2008)
14) Give the composition, property and uses of S.G iron,18-4-1 HSS and Monelmetal
(MAY/JUNE 2009)
15) State the composition, properties and uses of bearing alloys. (MAY/JUNE 2009)
(APR/MAY 2010) ( NOV/DEC 2010)
16) Explain the effects of alloying elements in steels (MAY/JUNE 2009)
17) Discuss about the grey cast iron? (MAY/JUNE 2009)
18) Discuss the composition, properties, application --- Malleable cast iron, Spheroidal cast
iron ( APR/MAY 2010)
19) Discuss the composition, properties, application --- Stainless steels, Tool steel
( APR/MAY 2010)
20) Discuss the composition, properties, application --- Cupro – Nickel, Bronze ( APR/MAY
2010)
21) Classify the ferrous material with respect to alloying elements, microstructure and
properties and write the effect of alloying addition in steels ( NOV/DEC 2010)
22) Write a short notes on light weight nonferrous alloys and discuss the aluminium and its
alloy with respect alloying and heat treatments ( NOV/DEC 2010)
23) What are important alloying elements in steels? Discuss the purpose for which alloying
elements are added? ( NOV/DEC 2010)
24) Discuss briefly the different types of cast irons ( NOV/DEC 2010)
25) Mention any three copper base alloys. Give the composition, properties, Application.
26) What are the effects of Si,Ni,Mn and Cr in steel and also in Fe-c diagram. (APR/MAY
2011)
27) Discuss any two copper base, any two aluminium base alloys. Give at least one
applications for each(APR/MAY 2011)

UNIT 4- FERROUS AND NON FERROUS METALS
PART A
1. Name four ethenic polymers ? ( MAY / JUNE 2006 )
2. What are the important use of alumina and silica nitride ? ( MAY / JUNE 2006 )
3. Draw the molecular structure of polyethelene and polyprophelene ? (NOV/ DEC 2006 )
4. Give one example each for metal- matrix composites and ceramic- matrix composites ?
(NOV/ DEC 2006 )
5. Write the molecular structure of either phenol- formaldehyde (PF) polymer or Urea –
formalehyde ( UF) polymer ? ( MAY/ JUNE 2007 )
6. Give any two examples of particulate reinforced metal matrix composites? ( MAY/ JUNE
2007 )
7. Name any four common engineering polymers ? ( NOV/DEC 2007 )
8. What are the uses of aluminium oxide ? ( NOV/ DEC2007 )
9. What do you mean by co polymers ? ( APR /MAY 2008)
10. How are refractories classified? ( APR /MAY 2008)
11. With property and application, explain the following polymers a) PVC b) PMMA ? ( MAY/
JUN-2009 )
12. Write the general mechanical properties of mechanism ? ( MAY/ JUN-2009 )
13. Define degree of polymerization ? ( NOV/DEC 2009)
14. State any properties of ceramics? ( NOV/DEC 2009)
15. What are the PMMA and PET polymers? What are their uses ? ( APR/MAY 2010 )
16. What are the uses of alumina ? ( APR/MAY 2010 )
17. What will be the effects,if the following elements alloyed with steels? ( APR/MAY 2010 )
18. Write down the composition and any one application of the following alloys. A)
Duralumin B) Brass? ( APR/MAY 2010 )
19. What is the inoculation? ( NOV/DEC-2010 )
20. What is the precipitation hardening? ( NOV/DEC-2010 )
21. How does the internal residual stress develop in the metal piece? ( NOV/DEC-2010 )
22. Draw a typical hardenability plot as a function of distance from the quench end ?
( NOV/DEC-2010 )
23. What is the structure difference between white cast iron and Grey cast iron ?
( APR/MAY 2011)
24. Name any two precipitation hardenable alloys? ( APR/MAY 2011)

PART B
1) Decsribe the molecular structure, properties and applications of the following polymers
i) Polyvinyl chloride( PVC) (MAY/ JUNE 2007) (NOV/DEC 2007)
ii) Polystyrene(PS) (NOV/DEC 2007)
iii) Polyethylene Terephthalate (PET)
iv) Polycarbonate ( PC) (MAY/ JUNE 2006)
2) Discuss the properties and applications of the following ceramic materials
i) Alumine ( MAY/JUNE 2009)
ii) Silicon carbide ( MAY/JUNE 2009)
iii) Silicon Nitride ( MAY/JUNE 2009)
iv) Sialon(NOV/ DEC 2006)
v) Silica ( MAY/JUNE 2009)
3) Discuss the Structure, properties and application of the following polymeric materials
i) Polymethyl methacrylate
ii) Polyterafluoroethylene (MAY/ JUNE 2007) (NOV/DEC 2007) (NOV/DEC 2010)
( NOV/DEC 2010)
iii) Polyethyylene terephthalate (MAY/ JUNE 2007)
iv) Acryonitrile butadiene styrene(NOV/ DEC 2006)
v) Polypropylene (MAY/ JUNE 2007)
4) Write a short notes about the different types of matrix materias and reinforcement
materials used to make polymermatrix composites (MAY/ JUNE 2007)
5) Discuss the properties and applications of Al2 O3 and SiC ceramics (NOV/DEC 2007)
(NOV/DEC 2010)
6) Compare and contrast the difference between polyprpelene and polyethylene
(NOV/DEC 2007)
7) Compare the difference between
i) Acrylotrile – butadiene – styrene (NOV/DEC 2007)
ii) Stabilized zirconia
iii) Sialon
8) Describe these different types of reinforced used in polymer composites (NOV/DEC
2007)
9) Discuss the properties and applications of ceramics materials in industries ( APR/MAY
2008) ( NOV/DEC 2010)
10) Describe the mechanical behaviour of polymers ( APR/MAY 2008)
11) With the schematic diagram illustrate the the processing of reinforced composites
(APR/MAY 2008)

12) What are the special properties of plastics that make them useful engineering
material(MAY/JUNE 2009)
13) How do thermoplastics differ from thermosetting materials . Explain ? ( APR/MAY
2008)(APR/MAY 2011)
14) Write short notes on particle reinforced composites and fibre reinforced composites
( MAY/JUNE 2009) ( NOV/DEC 2010)
15) Write short notes on 1) ceramics ) formaldehyde (NOV/DEC 2009)
16) What is PMMA ? Describe it in detail (NOV/DEC 2009)
17) Explain in detail engineering polymers (NOV/DEC 2009)
18) State the properties and uses of reinforced concrete (NOV/DEC 2009)
19) What are the different types of polymers ? give any four polymers, their properties and
applications(APR/MAY 2010)
20) What are the different types of engineering ceramics ? give any four ceramics, their
properties and applications (APR/MAY 2010)
21) Write down the composition and applications of the following metals
i) Stainless steel
ii) Tool steel(APR/MAY 2010)
22) What is the precipitation hardening ? Iilustrate this with an examples? (APR/MAY 2010)
23) Enumerate the composition and applications of the following alloys
i) Cupro – nickel
ii) Bronze
iii) Bearing alloy (APR/MAY 2010)
24) State the effects of the following alloying elements in steel
i) Chromium
ii) Molybdenum (APR/MAY 2010)
25) Write the properties and applications of the following polymers and discuss anyone
fabrication methods of polymers
i) PE ( NOV/DEC2010) ( NOV/DEC 2010)
ii) PEEK ( NOV/DEC2010)
iii) ABS ( NOV/DEC2010)
26) List the important engineering ceramics and its application. Discuss the properties and
application of Si3N4 AND SiC ( NOV/DEC 2010) (APR/MAY 2011)
27) What are different types of plastics? Explain with examples and applications ( NOV/DEC
2010)
28) Discuss the properties and application of the following four ceramics
Zirconia, Silica, Cubic boron nitride (APR/MAY 2011)

Unit 5 - NON-METALLIC MATERIALS
PART A
1. Define endurance limit in fatigue test ? ( MAY / JUNE 2006 )
2. What are the properties are determined from tension testing of metallic products? (
MAY / JUNE 2006 )
3. In general, HCP metals are hard and brittle while FCC metals are soft and ductile. Why?
(NOV/ DEC 2006 )
4. Draw the sketch of a standard specimen used for charpy V- notch impact testing? (NOV/
DEC 2006 )
5. Distinguish Between slip and twinning? ( MAY/ JUNE 2007 )
6. How will you express the deformation characteristic of a material through tension test?
( MAY/ JUNE 2007 )
7. How may one distinguish between slip and twinning if the width of the twin band is of the
same order as a slip line ? ( NOV/DEC 2007 )
8. Why are impact specimen notched ? ( NOV/ DEC2007 )
9. What are slip bands ? ( APR /MAY 2008)
10. What are different types of loadings available for fatigue testing? ( APR /MAY 2008)
11. Distinguish between slip and twinning? ( MAY/ JUN-2009 )
12. What is creep? Draw a typical creep curve and show different stages on it? ( MAY/ JUN-
2009 )
13. Define fatigue? ( NOV/DEC 2009)
14. List the testing methods of metals? ( NOV/DEC 2009)
15. What is twinning in metals? ( APR/MAY 2010 )
16. What is the difference between HRB& HRC? ( APR/MAY 2010 )
17. Name any two polymers and state their applications? ( APR/MAY 2010 )
18. Mentions any four attractive properties of engineering ceramics? ( APR/MAY 2010 )
19. Distinguish polymer and ceramic with respect to mechanical and physical properties?
( NOV/DEC-2010 )
20. What are the PMMA and PTFE? ( NOV/DEC-2010 )
21. Draw the stress – strain curve for a ductile material? ( NOV/DEC-2010 )
22. Differentiate between slip and Twin ? ( NOV/DEC-2010 )
23. What is the structure of poly ethylene? Suggest any two uses ? ( APR/MAY 2011)
24. Distinguish polymer and ceramic with respect to mechanical and physical properties?
( APR/MAY 2011)

PART B
1) Explain the mechanism of plastic deformation of metals by slip and twinning ? (MAY/
JUNE 2006)
2) Explain the characteristic of ductile fracture and brittle fracture ? explain the testing
(MAY/ JUNE 2006) (NOV/ DEC2006) (NOV/DEC-2007) ( MAY/JUNE 2009)
3) Procedure for Vickers hardness testing (MAY/ JUNE 2006) (NOV/ DEC2006) (NOV/
DEC2010) (APR/MAY 2011)
4) Explain the testing procedure for charpy impact testing (MAY/ JUNE 2006) (MAY/ JUNE
2007) (APR/MAY2008 )
5) What are the slip and twinning ?What are the charateristics ? (NOV/ DEC2006)
6) Write a short notes about different types of metallic fracture (MAY/ JUNE 2007)
7) Explain the testing procedure for determining the following properties i) Brinell hardness
Number ii) Creep strength (MAY/ JUNE 2007)
8) Explain the mechanism of plastic deformation of metals by slip (NOV/DEC-2007)
9) Draw S-N curve for mild steel and aluminium and explain its features . Explain for
procedures used to obtain S-N diagram (NOV/DEC-2007)
10) What are the salient features of Rockwell –hardness test? What are the precautions to
be taken while determining hardness by this method (NOV/DEC-2007) (NOV/ DEC2010)
11) List the types of fracture and factors influencing them (APR/MAY2008 ) (APR/MAY
2011)
12) Give the griffith crack model for the mechanism of fracture (APR/MAY2008 )
13) What does impact test signify ? Explain impact Izod test with neat sketches( MAY/JUNE
2009) (APR/MAY 2011)
14) What is fatigue failure ?How fatigue test is carried out ? explain ( MAY/JUNE 2009)
(APR/MAY 2010) (NOV/ DEC2010) (APR/MAY 2011)
15) What do you mean by engineering stresses and true stresses ( MAY/JUNE 2009)
16) Explain the mechanism of plastic deformation ( NOV/DEC 2009)
17) Write short notes on creep ? ( MAY/JUNE 2009) (APR/MAY 2010)
18) Describe the procedure of tensile test for metals ( MAY/JUNE 2009)
19) Write a short notes on hardness testing ( MAY/JUNE 2009)
20) Discuss the mechanism of slip taking place in metals using edge dislocation and screw
dislocation(APR/MAY 2010)
21) Explain the following terms i) Mechaniclal Behaviour ii) Thermal Behaviour iii)Electrical
behaviour (APR/MAY 2010)

22) What are the special properties of plastics that make them suitable for engineering
applications? (APR/MAY 2010)
23) Enumerate the properties of the following I) Thermo plastics II) Thermo setting plastics
III) Elastomers (APR/MAY 2010)
24) Describe the concept of co- polymerization (APR/MAY 2010)

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