1. Make a plot of the bonding energy versus melting temperature for the metals
listed in Table 2.3 (Callister 6th Ed.). Using this plot, approximate the bonding
energy for Copper which has a melting point of 1084oC. Hint: You may fit an
equation to the resulting plot and determine bonding energy computationally.
2. At room temperature, the stable form of iron (Fe) is called ferrite and has a BCC
crystal structure. Ferrite experiences transformation to FCC crystal structure
called austenite upon heating to 912oC. Given that the atomic weight of iron is 56
and its atomic radius is 0.124nanometer, calculate the atomic packing fraction and
density of iron when (a) it is in ferritic, and (b) austenitic crystal structure. Is there
any volume change for this crystal structure transformation?
3. For a cubic crystal structure, sketch the following planes using separate sketches:
a) (101), b) (2-11), c) (012) d) (-21-2).
4. Derive linear density expressions for FCC [100] and [111] directions in terms of
the atomic radius R. Compute and compare the area density values for the same
two planes (100) and (111) of copper. Do you expect elastic modulus to be
different in the [100} and [111] directions? Briefly explain why?
listed in Table 2.3 (Callister 6th Ed.). Using this plot, approximate the bonding
energy for Copper which has a melting point of 1084oC. Hint: You may fit an
equation to the resulting plot and determine bonding energy computationally.
2. At room temperature, the stable form of iron (Fe) is called ferrite and has a BCC
crystal structure. Ferrite experiences transformation to FCC crystal structure
called austenite upon heating to 912oC. Given that the atomic weight of iron is 56
and its atomic radius is 0.124nanometer, calculate the atomic packing fraction and
density of iron when (a) it is in ferritic, and (b) austenitic crystal structure. Is there
any volume change for this crystal structure transformation?
3. For a cubic crystal structure, sketch the following planes using separate sketches:
a) (101), b) (2-11), c) (012) d) (-21-2).
4. Derive linear density expressions for FCC [100] and [111] directions in terms of
the atomic radius R. Compute and compare the area density values for the same
two planes (100) and (111) of copper. Do you expect elastic modulus to be
different in the [100} and [111] directions? Briefly explain why?
