1. Engineering Materials
Course Contents
1. Introduction to Material Science and Engineering.
2. Crystal and Amorphous Structure in Materials: Ionic, Metallic and Covalent bonds, Space lattice and Unit cell, Simple cubic crystal structure, Body - centered cubic (BCC), Faced- centered cubic (FCC), Hexagonal close- packed (HCP), Volume, Planar, and Linear density unit-cell calculation.
3. Stress and Strain in Metals: Elastic and Plastic Deformation, Engineering Stress and Engineering Strain, Shear Stress and Shear Strain, Engineering Stress-Strain Diagram, Modulus of Elasticity (E), Yield Strength, Ultimate Tensile strength (UTS), Percent Elongation, Percent reduction in area.

2. Engineering Materials
Course Contents
4. Phase Diagrams: Phase diagrams of pure substances, Gibbs phase rule, Cooling curves, The lever rule, Binary eutectic alloy system, Binary peritectic alloy system, Binary monotectic systems.
5. Engineering alloys: Production of iron and steel, Iron-carbon system, Low alloy steels, Aluminum alloys, Copper alloys, Stainless steels, Cast iron, Titanium alloys.
6. Polymeric materials: Polymerization reactions, industrial polymerization methods, crystallinity in thermoplastic, processing of plastic materials, General- purpose thermoplastics, Rubbers.

3. Engineering Materials
Course Contents
7. Ceramics and Glasses: Simple ceramic crystal structures, silicate structures, Processing of ceramics, mechanical and thermal properties of ceramics, structure of glasses.
8. Composite materials and Cement: Fibers for reinforced-plastic composite materials, Concrete.
9. Corrosion and corrosion protection: Electrochemical corrosion of metals, Galvanic cells, Corrosion rates (Kinetics), Types of corrosion, Oxidation of metals, Corrosion control.

4. Engineering Materials
ASSESSMENTS
Course Works
Homework %
Quizzes %
Class contributions %
Mid-term exams %
Final Examination
50%
REFERENCES
Smith W.F. and Hashemi J. “Foundations of Materials Science and Engineering” McGraw- Hill 4th Edition (2002).
Online sources

5. Engineering Materials
Introduction to Material Science & Engineering
Materials may be defined as substances of which something is
composed or made
Engineering Materials refer specifically to materials used to
produced technical products
Engineers design most manufactured products, and since products require
materials, engineers should be knowledgeable about the internal structure
and properties of materials.

6. Engineering Materials
Introduction to Material Science & Engineering
Research & development engineers create new materials or modify the
properties of existing ones.
Design engineers use existing, modified, or new materials to design and
create new products and systems.
Sometimes design engineers have a problem in their design that requires
a new material to be created by research engineers.
Example of such cases;
Engineers designing a high speed civil transport HSCT, have to develop
new high temperatures materials that could withstand temperatures as high
as1800 C.
Space station and space shuttle materials

7. Engineering Materials
Introduction to Material Science & Engineering
Different engineers searching for different materials
Mechanical Engineers search for high temperature materials so that jet
engines can be more efficiently.
Electrical Engineers search for new materials so that electronic devices can
operate faster and at higher temperatures
Aerospace Engineers search for materials with higher strength to weight
ratios for vehicles.
Chemical Engineers look for more highly corrosion resistant materials

8. Engineering Materials
Introduction to Material Science & Engineering
Materials Science and Engineering
Material Science concerned with the research for basic knowledge about the
internal structure, properties, and processing of materials
Materials Engineering concerned with the use of fundamental and applied
knowledge of materials so that the materials can be converted into products
needed by society.

9. Engineering Materials
Introduction to Material Science & Engineering
Types of Materials
Can be divided into three main or fundamental classes;
Metallic Materials
Polymeric Materials
Ceramic Materials +
Two application materials
Electronic Materials
Composite Materials +
Advanced Materials
Smart Materials
Nanomaterials

10. Engineering Materials
Introduction to Material Science & Engineering
Types of Materials
Metallic Materials (metals and metal alloys)
Inorganic materials that are characterized by;
High thermal and electrical conductivities.
Crystalline structure (atoms are arranged in a an orderly manner).
Relatively strong and good strength at high temperatures.
Examples are iron, steel, aluminum, and copper.
Alloy is a combination of two or more metals
Metallic Materials can be divided into two classes;
Ferrous metals and alloys : metal and alloys that contain a large percentage of iron
such as steel and cast iron.
Nonferrous metals and alloys : metal and alloys that do not contain iron, or relatively
contain small percentage, such as copper, zinc, titanium, aluminum and nickel.

11. Engineering Materials
Introduction to Material Science & Engineering
Types of Materials
Polymeric Materials
Materials consisting of long molecular chain or networks of low weight elements such as carbon, hydrogen, oxygen, and nitrogen.
Characterized by;
Low electrical conductivities (good insulators).
Mostly non crystalline
Low densities
Low softening or decomposition temperatures
Strength and ductility vary greatly
Examples are polythylene and polyvinyl chloride (PVC), Digital video disks (DVDs)

12. Engineering Materials
Introduction to Material Science & Engineering
Types of Materials
Ceramic Materials
Inorganic materials consisting of compounds of metals and nonmetals.
Characterized by;
High hardness
High temperature strength
Can be crystalline, non crystalline, or mixed of both.
Good heat resistance
Good insulative properties
Examples are clay products, glass, and pure aluminum oxide.
Used widely for furnace lining for heat treatment and melting of metals such
as steel

13. Engineering Materials
Introduction to Material Science & Engineering
Types of Materials
Composite Materials
Materials that are mixtures of two or more materials. Characterized by
High strength
BUT have
low fracture toughness, brittleness
Examples are
fiberglass-reinforcing material in a polyester or epoxy matrix.
carbon fibers in an epoxy matrix.

14. Engineering Materials
Composite Materials
The bridge in the picture is built entirely from composite material. Weighs one-tenth of the conventional concrete bridge. It took only 18 hours to assemble the bridge.

15. Engineering Materials
Introduction to Material Science & Engineering
Types of Materials
Electronic Materials
Materials used in electronics especially microelectronic,
Example is pure silicon that can be modified in different ways to change its electrical characteristics
Pure silicon is used in the manufacture of transistors and other electronic components because, it withstands heat well and is relatively inexpensive.

16. Engineering Materials
Introduction to Material Science & Engineering
Types of Materials
Advanced materials
Smart materials
Materials with the ability to sense and response to external environment
(temperature, light, humidity, electric and magnetic field)
Example is
Piezoelectric ceramics, materials that produce an electric field when subjected
to mechanical force.

17. Engineering Materials
Introduction to Material Science & Engineering
Types of Materials
Advanced materials
Nanomaterials
Materials with a characteristic length scale (particle diameter, grain size,
thickness) smaller than 100 nm ( ), nanomaterials can be
metallic, polymeric, ceramic, electronic or composite.
(A)
(B)
Fig. Transmission electron microscopy (TEM) results for (A) undoped P25 (0:1), and (B) S-doped P25 (1:1)