MU Material Technology - December 2015 Exam Question Paper

MU Mechanical Engineering (Semester 4)
Material Technology
December 2015

Total marks: --
Total time: --

INSTRUCTIONS
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary

Write note on any four:

1 (a) Baushinger's effect related to fatigue of metal.

4 M

1 (b) Creep Test

4 M

1 (c) Effect of Alloy on TTT diagram

4 M

1 (d) Critical resolved shear stress

4 M

1 (e) Crystal Imperfection

4 M

2 (a) What do you mean by Composite Materials? Explain their properties and practical applications.

10 M

2 (b) What is Fatigue? Explain fatigue testing in detail.

10 M

3 (a) Draw Fe-Fe₃C Diagram and Explain cooling of 1.0% C alloy in the Fe-Fe₃C Diagram.

10 M

3 (b) Explain Flame Hardening and Induction Hardening.

10 M

4 (a) Draw and explain Time Temperature Transformation (TTT) diagrams of 0.8%C alloy.

10 M

4 (b) Derive an expression for Griffith theory of brittle fracture.

10 M

5 (a) What is plastic deformation? Distinguish between slip and twin mechanism of plastic deformation.

10 M

5 (b) What is case hardening? Explain carburising in detail.

10 M

Write short note on any four:

6 (a) Dislocation Jog and Kink.

4 M

6 (b) Austempering

4 M

6 (c) Bain's distortion model for martensitic transformation.

4 M

6 (d) Engineering Materials.

4 M

6 (e) Annealing

4 M

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