Material Science Mec208
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Transcript of Material Science Mec208
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7/28/2019 Material Science Mec208
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MEC208:MATERIAL SCIENCE
L:3 T:0 P:0
Course Objectives:
To underastand how the material properties affect their function
To understand how the material properties are varied by alloying
To know the testing and analysis of materials
Unit I
Introduction to material science and engineering : History of materials,
Introduction to material science and engineering, Classification of materials, Materialdesign and selection, Terminology for mechanical properties, The tensile test, Use of
stress-strain diagram, Properties obtained from tensile test, True stress and true
strain, Hardness of materials, Strain rate effects and impact behavior, Glossary
(relevant topics only)
Unit II
Atomic arrangements : Short-range order vs. Long-range order ionic
arrangements, Amorphous materials, Lattice basis, Unit cells and crystal structures,
Allotropic or polymorphic transformations, Points directions and planes in the unit cell
Unit III
Imperfections in the atomic arrangements : Introduction, Point defects,
Dislocations, Significance of dislocations, Schmids law, Influence of crystal structure,
Surface defects, Importance of defects
Unit IV
Principles of solidification : Nucleation and growth mechanisms, Atom and ion
movements in materials, Diffusion, Applications of diffusion, Mechanisms for
diffusion, Rate of diffusion, Factors affecting diffusion, Composition profile
Unit V
Solid solutions and phase equilibrium : Phases and the phase diagram, Solubility
and solid solutions, Conditions for unlimited solid solubility, Solid solutionstrengthening, Isomorphous phase diagrams, Relationship between properties and
phase diagram, Solidification of a solid-solution alloy, Non-equilibrium solidification
and segregation
Unit VI
Dispersion strengthening and eutectic phase diagrams : Principles and
examples of dispersion strengthening, Intermetallic compounds, Phase diagrams
containing three phase reactions, The eutectic phase diagram, Strength of eutecticalloys
Unit VII
Dispersion strengthening by phase transformations : Nucleation and growth in
solid-state reactions, Alloys strengthened by exceeding the solubility limit, Age or
precipitation hardening, Microstructural evolution in age or precipitation hardening,
Effect of aging temperature and time, The eutectoid reaction, Controlling theeutectoid reaction, The martensitic reaction and tempering
Unit VIII
Strain hardening and annealing : Relationship of cold working to the stress strain
curve, Strain-hardening mechanisms, Properties Vs percent cold work,
Microstructure, Texture strengthening and residual stresses, Characteristics of cold
working, The three stages of annealing, Control of annealing
Unit IX
Heat treatment of steel : Designations and classification of steels, Simple heat
treatments, Isothermal heat treatments, Quench and temper heat treatments, Effect
of alloying elements, Application of hardenability, surface treatments
Credits:3
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7/28/2019 Material Science Mec208
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Unit X
Cast irons and alloy steels : Cast Irons and types, Speciality steels, Stainless
steels
Text Books:
1. The Science and Engineering of Materials by Askeland, Fulay, Wright & Balani,Cengage Learning, 6th Edition (2011)
References:
1. Material Science & Engineering by Raghavan, Prentice Hall of India, 5th Edition
(2004)
2. Material science and engineering by William D Callister, Wiley, 8th Edition (2007)
Page:2/2 Print Date : 3/6/2013 9:33:04 PM