STUPIDSID
1 (a)
Discuss the full Annealing heat treatment of steel.
6 M
1 (b)
Draw neat iron iron-carbide equilibrium diagram indicating all important temperature, phases and composition. Explain the slow cooling of an alloy containing 0.3% C steel, when cooled from 1600°C to room temperature. Draw micro-structure at each phase and calculate phases in the alloy at various points by lever rule from liquid state to room temperature.
14 M
2 (a)
What are Line defects in crystals? Explain the various Line defects in detail.
10 M
2 (b)
Define the term 'Hardenability' . Discuss the factor affecting hardenability and explain any one of the hardenability tests.
10 M
3 (a)
State and explain Slip mechanism of plastic deformation. What is Slip system? Explain Slip system in various lattice structures such as FCC, HCP and BCC.
10 M
3 (b)
What is Diffusion Coating? Name its different methods. Discuss any one process of diffusion coating in detail on basis of principle, process, advantage and applications.
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)
What is Carburizing? Explain the heat treatment after Carburizing.
10 M
5 (a)
Define Fatigue failure. Give examples of components prone to fatigue failure. Discuss fatigue testing and explain SN curve for ferrous and non-ferrous metals.
10 M
5 (b)
Explain the various transformation in Iron-Iron Carbide Equilibrium diagram.
10 M
6 (a)
Define Creep. Explain the mechanism of creep failure.
10 M
6 (b)
Explain in detail the Heat Treatment for 18-4-1 Tool Steel.
10 M
Write Short Notes on any four:-
7 (a)
Recrystallization and effect of recrystallization temperature.
5 M
7 (b)
Maraging heat treatment process.
5 M
7 (c)
Precipitation Hardening.
5 M
7 (d)
Difference between Annealing and Normalizing.
5 M
7 (e)
Effects of alloying elements on Ferrite.
5 M
7 (f)
Hume Rothery's rules of solid solubility.
5 M
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