This course presents an introductory treatment of the mechanical behavior of materials and the processes by which materials are made. The course is intended to provide an introduction to materials science, focusing on the relationships between macroscopic properties and microstructure, as well as fundamental concepts of bonding and crystal structure. The course is divided into two parts and attempts to develop quantitative descriptions of structure-property relations. Significant coverage is given to nonmetallics- including composites, ceramics, and polymers - which have emerged as legitimate structural materials with ever-expanding applications. Laboratory experiments/demonstrations are included to demonstrate the principles presented in lecture.

Course material will be taken from multiple sources, although the text by Ashby and Jones will provide the basis for most of the lectures and assignments. Supplemental materials will be available on library reserve and on the WorldWideWeb, and photocopies of selected journal articles will be distributed in class. Students will be graded on problem sets (20%), two midterm exams (20% each), labs (10%), and a final exam (30%).

I. Engineering Materials and Their Properties (3 classes)
A. Price and availability
B. Materials selection charts

II. Elastic Behavior (2)
A. The elastic modulus and bonding
B. Physical basis for Young’s modulus
C. Case studies

III. Dislocations (3)
A. Yield strength
B. Edge and screw dislocations
C. Properties of dislocations
D. Interactions of moving dislocations
E. Relation to macroscopic strain

IV. Strengthening of Crystalline Materials (3)
A. Work hardening
B. Solution strengthening
C. Particle hardening
D. Strength, microstructure and processing

V. Composite Materials (3)
A. Continuous fiber reinforcement
B. Discontinuous fiber reinforcement
C. Statistical failure of composites
D. Design with composite materials

VI. High-Temperature Deformation (2)
A. Creep and associated mechanisms
B. Superplasticity
C. Hot-working of metals

VII. Deformation of Polymers and Glasses (3)
A. Viscosity
B. Deformation of glasses
C. Deformation of polymers, including chemistry and structure, and structure-property relations

VII. Tensile Fracture (3)
A. Theoretical strength
B. Bonding/Structure/Mechanism relations
C. Brittle fracture
D. Ductile fracture

VIII. Engineering Aspects of Fracture (3)
A. Fracture mechanics
B. Notch sensitivity
C. Fracture toughness and materials design
D. Toughening of ceramics

IX. Oxidation and Corrosion (1)
A. Oxidation of materials
B. Wet corrosion of materials

X. Fatigue of Engineering Materials (2)
A. Characteristics of fatigue fracture
B. Crack growth rates
C. Stress-strain behavior
D. Polymeric fatigue

INSTRUCTIONAL MATERIALS

Textbook

Engineering Materials, Ashby and Jones, Pergamon, Oxford, 1991.

Additional References

1. "Mechanical Metallurgy, G.W. Dieter, McGraw-Hill, New York, 1993.
2. "Deformation and Fracture Mechanics of Engineering Materials, Hertzberg, Wiley, New York, 1992.
3. Fatigue of Materials, S. Suresh, Cambridge, Cambridge, 1992.
4. Introduction to Dislocations, D. Hull and D. Bacon, Pergamon, Oxford, 1984.
5. Composite Materials: Engineering and Science, Rawlings and Matthews, Chapman and Hall, 1993.