Part III: Properties and Uses of Materials
Chapter 9: Mechanical Behavior
One of the most important aspects of materials are how they respond to forces. This response
determines their stiffness, elasticity, resistance to deformation, resistance to breakin
Chapter 9 Problems
9.1 A cylinder of an aluminum alloy with a radius of 2 cm and a length of 10 cm is subjected to a force of
40 kN. After applying this force the length of the cylinder becomes 10.005 cm.
a. Calculate the stress and strain
Chapter 9 Solutions
9.4 The data is given in force vs. length, which can easily be converted to stress and strain.
This is the slope of the initial linear region. One point on the linear region is at 0 N
Chapter 4: Atomic Arrangements in Solids
For a chemist, the most important things that define the structure of a material are the chemical bonds
and the non-bonding interactions. For a materials engineer, while bonds are very important we go
beyond the bo
Chapter 4 End of Chapter Problems
4.1 For the crystal structure shown below:
a. How many white atoms are there per unit cell?
b. How many red atoms are there per unit cell?
c. How many black atoms are there per unit cell?
4.2 For the crysta
Chapter 6: Microstructure: Phase Diagrams
Up to this point we have considered primarily pure substances, with an occasional impurity
atom thrown in. But in reality materials that are used in engineering are complex mixtures that
are rarely homogeneous. Th
Chapter 4 Solutions
a. 12 atoms x atom per unit cell = 3
b. 8 atoms x 1/8 atom per unit cell = 1
c. 1 atom x 1 atom per unit cell = 1
a. 8 atoms x 1/8 atom per unit cell + 6 atoms x atom per unit cell = 4
b. 12 atoms x atom per unit cell + 1 atom
Chapter 7 End of Chapter Problems
7.1 A thin sheet of iron 0.5 mm thick has a nitrogen concentration on one side of 0.5 kg/m3 and a
nitrogen concentration on the other side of 3.0 kg/m3. The diffusion coefficient is 3.44x10-15 m2/s. What
Chapter 7: Diffusion
One of the important processes that is used in materials engineering is diffusion. Diffusion is the process
of atoms or molecules moving through a substance. Note that this is not the same as flow. Flow implies
that a bulk fluid is mo
Chapter 6 End of Chapter Problems
6.1 For each of the following, list the components and the phases:
a. sugar dissolved in water
b. water with ice cubes in it
c. sparkling water (pure water with carbon dioxide bubbles)
d. over-saturated sug
Chapter 3: Bonding
This chapter begins our exploration of the structure of materials, the first element in the MSE triangle.
The first level of structure we need to consider is the types of bonds that form between atoms. You
probably learned about bonds i
Chapter 2: What is Materials Science and Engineering?
Materials science and engineering deals with the stuff things are made out of. Since everything is made
out of something, materials engineering touches every aspect of our lives. The importance of mate
Chapter 1: What is Guided Inquiry?
Take a moment and flip through the pages in this book. You should notice that this text is very different
from texts you have used in other classes. At this point what you probably saw was that there are a lot