MATERIALS SCIENCEMATERIALS SCIENCEAML 120AML 120

3-0-2 : 4 credits3-0-2 : 4 credits

ANANDH SUBRAMANIAM

Department of Applied Mechanics

Indian Institute of Technology Delhi

Hauz Khas, New Delhi- 110 016

Ph: (+91) (11) 2659 1340, Fax: (+91) (11) 2658 1119

anandh333@rediffmail.com

http://web.iitd.ac.in/~anandh

ACKNOWLEDGMENTSACKNOWLEDGMENTS

Prof. S.K. Guptais the inspiring force behind these set of slides. I had a lot to learn from his meticulous planning of the AML 120 course.

Prof. R.K. Pandeyhas always been there to offer me help on all aspects, in spite of his busy commitments.

Dr. Rajesh Prasadhas been the source of knowledge for many of the slides in this presentation. Without his consistent guidance I would not be able to teach this course as presented.

REFERENCESREFERENCES

Materials Science and Engineering

By Prof. V. Raghavan

Fifth Edition, Prentice Hall of India Pvt. Ltd., New Delhi, 2004

ONLINE

http://www.tf.uni-kiel.de/matwis/amat/def_en/overview_main.html

UNIVERSE

PARTICLES

ENERGYSPACE

FIELDS

STRONG WEAKELECTROMAGNETICGRAVITY

METALSEMI-METAL

SEMI-CONDUCTORINSULATOR

nD + t

HYPERBOLICEUCLIDEANSPHERICAL

GAS

BAND STRUCTURE

AMORPHOUS

ATOMIC NON-ATOMIC

STATE / VISCOSITY

SOLID LIQUIDLIQUID

CRYSTALS

QUASICRYSTALS CRYSTALSRATIONAL APPROXIMANTS

STRUCTURE

NANO-QUASICRYSTALS NANOCRYSTALS

SIZE

Common type of materialsCommon type of materials

Metals Ceramics Polymers

Composites

Structure

Properties

Processing

Performance

The Materials Tetrahedron

METALLURGYMETALLURGY

PHYSICAL MECHANICAL ELECTRO-CHEMICAL

TECHNOLOGICAL

• Extractive• Casting• Metal Forming• Welding• Powder Metallurgy• Machining

• Structure• Physical Properties

Science of Metallurgy

• Deformation Behaviour

•Chemistry• Corrosion

Atom Structure

Crystal

Electro-magnetic

Microstructure Component

Thermo-mechanical Treatments

Phases Defects+

• Casting• Metal Forming• Welding• Powder Processing• Machining

• Vacancies• Dislocations• Twins• Stacking Faults• Grain Boundaries• Voids• Cracks

+ResidualStress

Processing determines shape and microstructure of a component