K L University 2008 B.Tech Industrial and Production Engineering Engineering Materials and Metallurgy - Question Paper

UNIT-I
1.(a) Why various materials exist in various structure form? [Marks 3]
(b) Draw the subsequent directions in a F.C.C structure (112),(011) and (101) [Marks 6]
(c) Differentiate ranging from slip and twinning. [Marks 3]
(OR)
2.(a) discuss equilibrium diagrams for the subsequent cases.
(i) 2 metals completely soluble in the liquid and solid states.
(ii) An alloy subjected to 'peritectic transformation'. [Marks 2x4]
(b) Write in detail note on 'ternary equilibrium diagram'. [Marks 4]
UNIT-II
3.(a) discuss the 'martensite transformation' and how it is formed. [Marks 4]
(b) Can a carburizing technique be adopted for high carbon steels?Justify your ans.[Marks 4]
(c) discuss any 1 carburizing technique. [Marks 4]
(OR)
4.(a) discuss briefly the subsequent processes.
(i)Full annealing (ii)Isothermal annealing [Marks 2x4]
(b) discuss how hardenability is determined experimentally. [Marks 4]
UNIT-III
5.(a) discuss the general characteristics of composites. [Marks 4]
(b) A tensile load of 200N is applied to a composite material of one square mm cross sectional area. The quantity of parallel fibers is 40%.Determine the stress in fibers, if axis of load is (i)Parallel to the fibers and (ii)perpendicular to the fibers.Assume the ratio of Young's Moduli of fiber and matrix material is 6. [Marks 8]
(OR)
6.(a) How the grain refinement influences the mechanical properties of materials?Explain with an example. [Marks 6]
(b) discuss the subsequent strengthening mechanisms.
(i)Solid solution strengthening (ii)Dispersion strengthening. [Marks 6]
UNIT-IV
7.(a) discuss different steps involved in LD process of manufacturing steel. [Marks 6]
(b) State the composition,properties and uses of carbon steels. [Marks 6]
(OR)
8.(a) Enumerate the advantages and disadvantages of powder metallurgy. [Marks 8]
(b) How is copper manufactured? [Marks 4]
UNIT-V
9.(a) elaborate the key problems in nano manufacturing? [Marks 6]
(b) List out different applications of shape memory alloys. [Marks 6]
(OR)
10.(a) Write short notes on the subsequent.
(i)Piezoelectric ceramics (ii)Biocompatbility (iii)Nano films [Marks 3x4]

Earning:   Approval pending.