Introduction to Materials Scienceand Engineering

Department of IE & MJSS Academy of Technical Education, Bangalore-560060

The objective of Materials Science Study

• At some point of time or the other an engineering problem involves issues related to material selection.

• Understanding the behavior of materials, particularly structure-property correlation, will help selecting suitable materials for a particular application.

The objective of studying materials science is to develop this understanding

Objective and Scope of the present course

Primary objective is to present the basic fundamentals of materials science and

engineering.

Classification of materials, their properties, structures and imperfections present in them.

Aid the teaching learning process through relevant illustrations, animations, web content

and practical examples.

Highlight important concepts for each topic covered in the subject

“materials science” involves investigating the relationships that exist between the structures and properties of materials.

Materials science and engineering

Why do we study materials?

Many 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.

materials scientists and engineers are specialists who are totally involved in the investigation and design of materials.

materials problem is one of selecting the right material from the many thousands that are available.

selection consideration is any deterioration of material properties that may occur during service operation.

Example, significant reductions in mechanical strength may result from exposure to elevated temperatures or corrosive environments.

overriding consideration is that of economics. (Cost)

Historical perspective

Materials Scienceand

Human Civilization

Materials in day to day life

Materials: The Milestones of Progress

Development and advancement of Human societies closely related with materials

• Civilizations have been named based on the level of their materials development – Stone age,

Bronze age etc.

Quest for newer materials:

The driving force for the progress- stone age to IT age

Quest for more advanced materials to meet the growing needs as the civilization progressed.

A look at the history of materials chronologically clearly reveals this

Stone age

Introduction of metals

Discovery of Alloy - Metal Combinations

Iron and Steel – Building blocks of human civilization

Early 20th Century – The golden era

The Electronic revolution

Superconductors

End of Module 1