K L University 2008 B.Tech Industrial and Production Engineering engineering materials and metallurgy - Question Paper

ans all units
ans 1 ques. from every unit
Unit 1
1) why various materials exist in various structure form?
2) Draw the subsequent directions in a F.C.C structure (112), (011), (101)
3) Differentiate ranging from slip and twinning
(or)
1) Explain equilibrium diagrams for the subsequent cases
a. two metals completely soluble in the liquid and solid states
b. an alloy subjected to ‘peritectic transformation’
2) Write in detail note on ‘ternary equilibrium diagram
Unit 2
1) Explain the ‘marten site transformation’ and how it is formed
2) Can a carburizing technique be adopted for high carbon steels? Justify your ans
3) Explain any 1 carburizing technique
(or)
1) explain briefly the subsequent processes
a. full annealing
b. isothermal annealing
2) explain how harden ability is determined experimentally
Unit 3
1) Explain the general characteristics of composites
2) 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 a) parallel to the fibers and b) perpendicular to the fibers. presume the ratio of young’s moduli of fiber and matrix is 6
(or)
1) how the grain refinement influences the mechanical properties of materials? discuss with an example
2) explain the subsequent strengthening mechanisms.
a) Solid solution strengthening
b) Dispersion strengthening
Unit 4
1) explain different steps involved in LD process of manufacturing steel
2) state the composition, properties and uses of carbon steels
(or)
1) enumerate the advantages and disadvantages of powder metallurgy
2) how is copper manufactured
Unit 5
1) what are the key problems in nano manufacturing?
2) List out different applications of shape memory alloys
(or)

1) write short notes on the subsequent
a) piezoelectric ceramics
b) biocompatibility
c) nano films

Earning:   Approval pending.