STUPIDSID
1 (a)
Discuss the Normalizing heat treatment of Steel.
10 M
1 (b)
Draw a neat iron-iron carbide equilibrium diagram indicating all important temperature, phases and composition. Explain the slow cooling of an alloy containing 1.2% C Steel, when cooled from 1600°C to room temperature. Draw microstructure at each phase and calculate phases in the alloy at various points by lever rule from liquid state to room temperature.
10 M
2 (a)
What is work hardening? Explain the various stages of work hardening in detail.
10 M
2 (b)
What is retained austenite? Explain in detail the tempering process used to eliminate retained austenite.
10 M
3 (a)
Explain Slip mechanism of plastic deformation. What is Critical Resolved Shear Stress? Derive its expression for deformation by slip.
10 M
3 (b)
What is Diffusion Coating? Discuss principle, process, chemical reaction, metallization process, advantages, disadvantages and applications of Calorizing.
10 M
4 (a)
Define Fracture and give a brief classification of fracture. State Griffith's theory of brittle fracture and derive Griffith's equation.
10 M
4 (b)
Explain in detail the Nitriding heat treatment process.
10 M
5 (a)
Define Fatigue failure. Give examples of components prone to fatigue failure. Explain the mechanism of fatigue failure. Also discuss the various theories proposed for fatigue failure.
10 M
5 (b)
Draw a neat and labeled microstructure of White Cast Iron, Grey Cast Iron, Nodular Cast Iron Low Carbon Steel and Eutectoid Steel.
10 M
6 (a)
Define Creep. Draw Classical Creep Curve. Explain each stage in details. Discuss the development of creep resisting alloys.
10 M
6 (b)
Give classification of alloying elements. Explain the effect of alloying elements on phase transformation temperatures in Iron, Iron-Carbide diagram.
10 M
Write short notes on any four:-
7 (a)
Annealing of cold worked metals.
5 M
7 (b)
Jominy End Quench Test.
5 M
7 (c)
Age Hardening.
5 M
7 (d)
Differentiate between Edge Dislocation and Screw Dislocation.
5 M
7 (e)
Properties of tools steels.
5 M
7 (f)
The Solid Solution.
5 M
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