STUPIDSID
Any four
1(a)
Write note on any four:Flame hardening
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1(b)
Composite materials
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1(c)
Classify crystal imperfections
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1(d)
Normalising
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1(e)
Allotropic forms of iron
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1(f)
Classfication of engineering materials.
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2(a)
What is Dislocation?What are the sources of Dislocation?Compare edge and screw Dislocation.
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2(b)
What is plastic deformation?Discuss how plastic deformation of single crystal takes place by slip mechanism and twinning mechanism
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3(a)
state Griffth theory of brittle fracture.on its basis,derive an expression for frature stress .State Orrowan's modification.
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3(b)
How creep test is carried out?Explain Andrade analsyis of creep.
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4(a)
What is Fatigue limit explain with S-N curve?Explain fatigue testing.
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4(b)
What is hardenability?Explain jominy End Quench test method to measure hardenability.
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5(a)
Define 'Alloy'.name different types of alloys.Discuss Hume-Rothery condition of formation of solid solution.
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5(b)
Draw Fe-Fe3C Diagram and Explain Eutecoid Eutectic and peritectic transformation in the Fe-Fe3C Diagram.
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6(a)
Draw a neat time Temperature transformation (TTT)and CCT of 0.8% carbon steel and label all important points and phases.
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6(b)
Write short note on:
(i) Nanomaterials,br> (ii)Effect of alloying element on Fe-C diagram.
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