Lecture: 01
ME 2203 Engineering Materials
Topic: Atomic Structure and Interatomic Bonding
Dr. Kazi Md Shorowordi
Department of MME
Bangladesh University of Engineering and Technology, Dhaka - 1000
Course outline
1. Introduction of engineering materials
2. Metallic materials structure
3. Phase diagram
4. Types of metal and alloys, and their applications
5. Heat treatment of steel
6. Surface hardening techniques
7. Ceramic, polymeric and composite materials
Lecture 1 : Introduction, engineering materials, historical aspect, classification of engineering materials, various
properties of engineering materials, advanced materials
Lecture 2 : Atomic structure, atomic bonding in solid: ionic, covalent and metallic bonding, bonding energies and
melting temperatures
Lecture 3-6 : Crystal structures, metallic crystal structures, atomic packing factor, theoretical density of elements
Lecture 7-9 : Mechanical properties
Lecture 10 -17: Phase diagrams, importance of phase diagrams, types of phase diagrams, types binary phase
diagrams, phase rules, various phases and their calculations, iron-iron carbon diagram
Lecture 18-22: Types of metals and alloys, various types of plain carbon steels, structure-property relationship of
plain carbon steels and their applications, various tool steels and their applications, classification of stainless steel
and their applications, cast irons, types of cast irons, properties and applications of cast irons, non-ferrous alloys,
common non-ferrous alloys and their applications
Lecture 23-25 : Heat treatment of steels, heat treatment cycles, basic types of heat treatment, annealing,
normalizing, hardening, tempering, spheroidizing, transformation during heat treatment, continuous and
isothermal cooling transformation curves, hardenability, various quenching media, influence of quenching media,
specimen size and geometry on the properties of various components, martensitic transformation, structure and
properties of martensite
Lecture 26-27 : Purpose of surface hardening, surface hardening of steel, various techniques of surface of
hardening, heat treatment cycle in various surface hardening techniques, advanced surface hardening techniques,
flame, induction,
Lecture 28-30: Introduction to ceramic, polymer and composite materials, crystal structure and phase diagrams of
some common ceramics materials, classification and applications of ceramic materials, glasses, properties and uses
of glasses, cements, advanced ceramics, properties and application of optical fibers, ceramics ball bearings.
Lecture 31-34 : Polymeric materials, structures of polymeric materials, thermoplastic and thermoset polymers,
applications of various polymeric material, elastomers.
Lecture 35-37 : Composites, classification of composite material, stress-strain behaviors of composites, elastic
behavior I various directions, fiber and matrix phases of composites.
Lecture: 01
HISTORICAL PERSPECTIVE
Materials are probably more deep-seated in our culture than most of us realize i.e.
transportation, housing, clothing, communication, recreation, and food production
Historically, the development and advancement of societies - ability to produce and
manipulate materials to fill their needs.
Early civilizations have been designated by the level of their materials development
(Stone Age, Bronze Age, Iron Age).
The earliest humans had access to only stone, wood, clay, skins, and so on.
With time they discovered techniques for producing materials included pottery and
various metals.
It was discovered that the properties of a material could be altered by heat
treatments and by the addition of other substances.
This knowledge, acquired over approximately the past 100 years, has empowered
them to fashion, to a large degree, the characteristics of materials metals, plastics,
glasses, fibers and semiconducting materials.
Lecture: 01
MATERIALS SCIENCE AND ENGINEERING
“materials science” involves investigating the relationships that exist between the
structures and properties of materials.
“materials engineering” is, on the basis of these structure–property correlations,
designing or engineering the structure of a material to produce a predetermined set of
properties.
WHY STUDY MATERIALS SCIENCE AND ENGINEERING?
Many an applied scientist or engineer, whether mechanical, civil, chemical, or
electrical, will at one time or another be exposed to a design problem involving
materials.
Examples might include a transmission gear, the superstructure for a building, an oil
refinery component, or an integrated circuit chip.
Of course, materials scientists and engineers are specialists who are totally involved
in the investigation and design of materials.
CLASSIFICATION OF MATERIALS
Metals, ceramics, polymers, composites, semiconductors, biomaterials
ADVANCED MATERIALS
Electronic equipment (camcorders, CD/DVD players, etc.), computers, fiber-optic
systems, spacecraft, aircraft, and military rocketry
