MATERIAL SCIENCE(18ME34)

MATERIAL SCIENCE

Course Code:18ME34
CIE Marks:40
SEE Marks:60
Teaching Hours/Week (L:T:P):3:0:0
Credits:03
Exam Hours:03

Course Learning Objectives:

• The foundation for understanding the structure and behaviour of materials common in mechanical
engineering.
• Topics to explore the mechanical properties of metals and their alloys, polymers, ceramics, smart
materials and composites.
• To understand modifications of material properties by heat treatment processes.
• Selections of different materials for various applications are highlighted.
• Impart knowledge of various failure modes of materials.

Module-1

Introduction to Crystal Structure: Coordination number, atomic packing factor, Simple Cubic, BCC,FCC
and HCP Structures, Crystal imperfections–point, line, surface and volume imperfections. Atomic Diffusion:
Phenomen on, Fick’s laws of diffusion (First and Second Law);Factors affecting diffusion.
Mechanical Behaviour: Stress-strain diagrams showing ductile and brittle behaviour of materials, Engineering
stress and true strains, Linear and non- linear elastic behaviour and properties, Mechanical properties in plastic
range: Stiffness, Yield strength, Offset Yield strength, Ductility, Ultimate Tensile strength, Toughness.
Plastic deformation of single crystal by slip and twinning, Mechanisms of strengthening in metals.

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Module-2

Failure of Materials Fracture: Type I, Type II and Type III,
Fatigue: Types of fatigue loading with examples, Mechanism of fatigue, fatigue properties, S-N diagram,
fatigue testing.
Creep: Description of the phenomenon with examples, three stages of creep, creep properties, Stress
relaxation. Concept of fracture toughness, numerical on diffusion, strain and stress relaxation. Alloys, Steels,
Solidification:
Conceptofformationofalloys:Typesofalloys,solidsolutions,factorsaffectingsolidsolubility(HumeRotheryrules)
,Binary phasediagrams:Eutectic,andEutectoidsystems,Leverrule,Intermediatephases,(The same type of
process will study in Iron Carbon Phase Diagrams) Gibbs phase rule, Effect of non-equilibrium cooling,
Coring and Homo genization Iron-Carbon (Cementite) diagram: description of phases, Effect of common
alloying elements in steel, Common alloy steels, Stainless steel, Tool steel, Specifications of steels.
Solidification: Mechanism of solidification, Homogenous and Heterogeneous nucleation, Crystal growth,
cast metal structures, Solidification of Steels and Cast irons. Numerical on Lever rule.

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Module-3

Heat Treatment, Ferrous and Non-Ferrous Alloys: Heat treating of metals: Time-TemperatureTransformation (TTT) curves, Continuous Cooling Transformation (CCT) curves, Annealing: Recovery, Re
crystallization and Grain growth, Types of annealing, Normalizing, Hardening, Tempering, Mar tempering,
Austempering, Concept of harden ability, Factors affecting harden ability.
Surface hardening methods: carburizing, cyaniding, nit riding, flame hardening and induction hardening,
Age hardening of aluminium-copper alloys and PH steels. Ferrous materials: Properties, Compositions and
uses of Grey cast iron and steel.

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Module-4

Composite Materials : Composite materials - Definition, classification, types of matrix materials &
reinforcements, Metal Matrix Composites (MMCs), Ceramic Matrix Composites (CMCs) and Polymer
Matrix Composites (PMCs), Particulate-reinforced and fiber- reinforced composites, Fundamentals of
production of composites, characterization of composites, constitutive relations of composites, determination
of composite properties from component properties, hybrid composites. Applications of composite materials.
Numerical on determining properties of composites.

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Module-5

Other Materials, Material Selection
Ceramics: Structure type sand properties and applications of ceramics. Mechanical/ Electrical behaviour
and processing of Ceramics.
Plastics: Various types of polymers/plastics and their applications. Mechanical behaviour and processing of
plastics, Failure of plastics.
Other materials: Brief description of other materials such as optical and thermal materials.
Smart materials–fiber optic materials,piezo-electrics,shapememoryalloys–Nitinol,superelasticity.
Biological applications of smart materials-materials usedasim plants in human Body, selection of materials,
performance of materials in service. Residual life assessment–use of non-destructive testing, economics,
environment and Sustainability.

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Course Outcomes: At the end of the course, the student will be able to:

CO1: Understand the mechanical properties of metals and their alloys.
CO2: Analyze the various modes of failure and understand the microstructures of ferrous and nonferrous materials.
CO3: Describe the processes of heat treatment of various alloys.
CO4: Acquire the Knowledge of composite materials and their production process as well as
applications.
CO5: Understand the properties and potentialities of various materials available and material selection
procedures.

Question paper pattern:

• The question paper will have ten full questions carrying equal marks.
• Each full question will be for 20 marks.
• There will be two full questions (with a maximum of four sub- questions) from each module.
• Each full question will have sub- question covering all the topics under a module.
• The students will have to answer five full questions, selecting one full question from each module.

Textbook/s

1 Foundations of Materials Science and
Engineering
Smith McGrawHill 4thEdition,
2009.
2 Material science and Engineering and
Introduction
WilliamD.Callister Wiley 2006
3 Materials Science Shackle ford., & M. K.
Muralidhara
Pearson
Publication
2007

Reference Books

3 Materials Science and Engineering V.Raghavan PHI 2002
4 The Science and Engineering of Materials Donald R. Askland and
Pradeep.P. Phule
Cengage
Learning
4lhEd., 2003
5 Mechanical Metallurgy GeorgeEllwoodDieter McGrawHill.
6 ASM Handbooks American Society of
Metals
7 Elements of Materials Science and
Engineering
H. VanVlack, AddisonWesley Edn
1998
8 An introduction to Metallurgy Alan Cottrell University
Press India
Oriental
1974.