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Welcome to

APL102: Introduction toMaterials Science and

Engineering (3-0-2)

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Dr. Jayant Jain

Assistant ProfessorDepartment of Applied Mechanics

Office: III-236Tel. 011-2659 1246

Email: [email protected]
mailto:[email protected]:[email protected]

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APL102: Introduction to Materials

Science and Engineering (3-0-2)

Lectures 3 hours/wk

(Tues. Wed. and Fri. from 10:00-10:50 AM)

Lab 2 hours/wk

Total 5 hours/wk

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1.00-3.00 pm 3.00-5.00 pm

Mon GroupG4

GroupG9

Tue Group

G5

Group

G10

Wed Group

G1

Group

G6

Thu Group

G2

Group

G7

Fri Group

G3

Group

G8

All lab classes would be held in

Materials Science Core Laboratory, Room MS207/C-6

Labs will start from Tuesday, 28th

July 2015

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If any problem with group allotment thenSubmit an application with the reason before28th July, Tuesday.

No request will be entertained after that.

No guarantee but will try

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Minor I

Minor IIMajorQuizzes + Lab

Total

60

6012080

320

Grading

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Attendance Policy

75% attendance is compulsory

Attendance

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Questions/doubts

Students can ask questions after the class

Also free to knock my door between 5-6 PMon Tues., Wed. and Fri.

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Textbooks:

V. Raghavan, Materials Science and Engineering:A First Course, Sixth Edition, PHI India.

William D Callister, Materials Science andEngineering, An Introduction, Sixth Edition, John

Wiley and Sons.

Lecture slides:

This will be made available on web shortly

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1. Introduction

2. Thermodynamics Review3. Crystallography4. Structure of solids

Course content

5. Defects in crystalline solids6. Phase Diagrams7. Composite materials

8. Plastic deformation9. Creep, Fracture and Fatigue10. Phase transformation11. Corrosion

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Overview of Materials

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Everything we see and use is

made of Materials: cars, planes,bio medical devices (implants),

sports equipment

There are immense opportunities

in the field of Materials science

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Broad classification of Materials

Metals and alloys: Cu, Ni, NiAl (intermetalliccompound), brass (Cu-Zn)

Ceramics and glasses: Al2O3, Zr2O3, SiO2

Polymers and elastomers: Polythene,

Polyvinyl chloride,

Composite and hybrid materials: Which wemake out of above three: CFRP, GFRP

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Engineering Materials

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Materials: engineering, science, processing and design, 2nd edition Copyright (c)2010 Michael Ashby, Hugh Shercliff, David Cebon

Examples of Each Material Family

Our daily life uses most of them in some form

or the other!!

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Each material class comes with certainbaggage of properties

Let just see them...

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Stiff high E

Hard

Abrasion resistant

Good high temperature strength

Good corrosion resistance

Brittle


Ceramics

Hard

Corrosion resistant Electrically insulating

Transparent

Brittle low KIC

Glasses

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Light low

Easily shaped

High strength per unit weight (/)

Lack stiffness low E (50X less than metals)

Properties highly sensitive to temperature


Polymers

Lack stiffness low E (500 5000X less thanmetals)

Able to retain initial shape after being stretched

Relatively strong and tough

Elastomers

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Expensive

Difficult to shape and join

Properties dependent on combination of

materials

Tough high KIC

Stiff high E

Ductile

Wide range of strengths depending on composition and

processing

Thermally and electrically conductive

Reactive low corrosion resistance


Metals

Hybrids

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Material Tetrahedron

As a material scientist we engineer this

tetrahedron

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Structure of Materials

Macrostructure: naked eyes, macroscopicinformation

Microstructure: optical microscope, grainlevel

Substructure: Electron microscope, Defects

Crystal structure: X-rays, crystal system

Electron structure: Spectroscope

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What is resolution??

It is the ability to distinguish closelyspaced points as separate.

The resolution of LM is 200 nm

The resolution of electron microscope is 1nm or better

Resolution

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Properties of Materials

Mechanical properties: Strength, ductilitytoughness, creep, fatigue

Physical properties: Density, Elastic modulus

Electrical properties: resistivity, conductivity

Surface properties: wear, corrosion

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Processing of Materials

Documents

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