Material Science Engineering Answers

Ouestion 5

A.                Describe THREE (3) applications where tensile strength is primarily factor in material selection. What material would you select for what application and state why?

B.                 Copper has the atomic radius of Oa 128 nm, an FCC crystal structure and an atomic weight of 63.5 g/mol. Calculate the following:

i.       Cell edge length ii.      Vc - Unit cell volume iii.   Vs — Sphere volume iv.          Density,

v.       APF - Atomic Pack Factor via    Write the Avagador's Number

c.         Briefly explain what the factors that caused imperfection in solids are.

A. Make a sketch of the unit cell in a point model form of the following and writer the occupancy numbers and the Coordination numbers:

i. BCC — Body Centred Cubic ii. FCC - Face Centred Cubic iii. HCP - Hexagonal Close Pack

What are the 100 most important chemical compounds in Building Materials? (List name only)

Describe about density of states function

Describe about hall voltage

Describe about quasi - Fermi level

Describe about ionized impurity scattering

Describe about complete ionization

Work done to move the tank at a distance of 5 m if the it is fully filled with the

liquid.

For an Fe-C system with 0.35 wt.% of C, identify the following.

1. Amount of Proeutectoid and Eutectoid phases.

2.Amount of total ferrite and cementite