NOC:Introduction to Materials Science and Engineering

Lecture 1 - Intoduction

Lecture 2 - Crystal geometry

Lecture 3 - Unit cell

Lecture 4 - Classification of lattices

Lecture 5 - Gaps in Bravais lattice list

Lecture 6 - Symmetry - I

Lecture 7 - Symmetry - II

Lecture 8 - Classification of lattices on the basis of symmetry

Lecture 9 - A symmetry based approach to Bravais lattices

Lecture 10 - Miller indices of directions

Lecture 11 - Miller indices for planes

Lecture 12 - Miller indices for plane and its normal in Cubic Crystal

Lecture 13 - Weiss Zone law and its applications

Lecture 14 - Inter-planar spacing

Lecture 15 - Bragg’s Law

Lecture 16 - Close-packing of hard spheres

Lecture 17 - Hexagonal Close-Packed (HCP) structure

Lecture 18 - Lattice and motif of HCP crystals

Lecture 19 - c/a ratio of an ideal HCP crystal

Lecture 20 - ABCABC stacking of close-packed spheres

Lecture 21 - Voids in close-packed structures

Lecture 22 - Solid solutions - I

Lecture 23 - Solid solutions - II

Lecture 24 - Hume-Rothery rules

Lecture 25 - Ordered and disordered solid solutions

Lecture 26 - Graphene

Lecture 27 - Structure of graphite

Lecture 28 - Structure of diamond

Lecture 29 - Carbon nanotubes (CNT)

Lecture 30 - Buckminsterfullerene (C60)

Lecture 31 - Ionic solids

Lecture 32 - NaCl

Lecture 33 - CsCl

Lecture 34 - ZnS

Lecture 35 - BCC vs CsCl

Lecture 36 - Amorphous Solids

Lecture 37 - Polymers

Lecture 38 - Vinyl Polymers

Lecture 39 - Thermoplasts and Thermosets

Lecture 40 - Tacticity

Lecture 41 - Copolymers

Lecture 42 - Crystallinity in Polymers

Lecture 43 - Defects in Crystals

Lecture 44 - Vacancies

Lecture 45 - Edge dislocation: Half plane

Lecture 46 - Edge dislocation: Slip

Lecture 47 - Characteristic vectors of a dislocation

Lecture 48 - Edge, screw and mixed dislocations

Lecture 49 - Screw dislocations

Lecture 50 - Burgers circuit

Lecture 51 - Elastic energy of a dislocation line

Lecture 52 - Burgers vector: Shortest lattice translation

Lecture 53 - Burgers vector of a dislocation is constant along the line

Lecture 54 - Geometrical properties of a dislocations: Dislocation cannot end abruptly in a crystal: Free surface

Lecture 55 - Dislocation cannot end abruptly in a crystal: Grain boundaries

Lecture 56 - Dislocation cannot end abruptly in a crystal: Dislocation nodes

Lecture 57 - Dislocation cannot end abruptly in a crystal: Dislocation loop

Lecture 58 - Dislocation motion

Lecture 59 - 2D defects: Surfaces or interfaces

Lecture 60 - Free surface or external surface of the crystal

Lecture 61 - Stacking faults

Lecture 62 - Twin boundary

Lecture 63 - Grain boundary

Lecture 64 - Small angle symmetric tilt boundary

Lecture 65 - Ball bearing model

Lecture 66 - Phase diagrams: Introduction

Lecture 67 - Phases and components

Lecture 68 - Uses of phase diagrams

Lecture 69 - Phases present in the system

Lecture 70 - Composition of phases present in the system

Lecture 71 - Proportion of phases present in the system

Lecture 72 - Microstructure evolution during solidification in isomorphous systems

Lecture 73 - Eutectic system

Lecture 74 - Eutectic reaction

Lecture 75 - Eutectic, hypoeutectic and hypereutectic alloys

Lecture 76 - Gibbs’ phase rule

Lecture 77 - Fe-C phase diagram

Lecture 78 - Eutectoid, hypoeutectoid and hypereutectoid steels

Lecture 79 - Microstructure of a hypoeutectoid steel

Lecture 80 - Microstructure of a hypereutectoid steel

Lecture 81 - Diffusion: Introduction

Lecture 82 - Fick’s first law

Lecture 83 - Fick’s second law

Lecture 84 - Error function solution of Fick’s second law

Lecture 85 - Atomic mechanisms of diffusion

Lecture 86 - Substitutional diffusion revisited

Lecture 87 - Diffusion paths

Lecture 88 - Steady and unsteady state diffusion

Lecture 89 - Phase Transformation

Lecture 90 - Nucleation

Lecture 91 - Nucleation and capillary rise

Lecture 92 - Nucleation, growth and overall transformation

Lecture 93 - Time-temperature-transformation (TTT) diagram

Lecture 94 - Homogeneus and heterogeneous nucleation

Lecture 95 - Heat treatment of steels

Lecture 96 - TTT diagram of Eutectoid Steels

Lecture 97 - Quenching and martensite

Lecture 98 - Austempering and bainite

Lecture 99 - Tempering

Lecture 100 - Residual stresses and Quench cracks

Lecture 101 - Marquenching and martempering

Lecture 102 - TTT diagram of hypoeutectoid and hypereutectoid steels

Lecture 103 - TTT diagram of alloy steel

Lecture 104 - hardenability of steels

Lecture 105 - Glass Ceramics

Lecture 106 - Tensile test

Lecture 107 - Plastic deformation and crystal structure

Lecture 108 - Shape change

Lecture 109 - Slip

Lecture 110 - Resolved shear stress

Lecture 111 - CRSS

Lecture 112 - Schmid's law

Lecture 113 - CRSS:Theory vs experiment

Lecture 114 - Why is experimental CRSS less than theoretical CRSS

Lecture 115 - Strengthening mechaniksms

Lecture 116 - Dislocation density

Lecture 117 - Frank-Read source

Lecture 118 - strain hardening

Lecture 119 - Dislocation interaction leading to strain hardening - I

Lecture 120 - Dislocation interaction leading to strain hardening - II

Lecture 121 - Solid solution hardening

Lecture 122 - Grain size hardening

Lecture 123 - Age hardening - I

Lecture 124 - Age hardening - II

Lecture 125 - Metastable precipitates

Lecture 126 - Annealing of cold-worked metals

Lecture 127 - Recovery

Lecture 128 - Recrystallization

Lecture 129 - Grain Growth

Lecture 130 - True stress and true strain

Lecture 131 - Creep

Lecture 132 - Effect of stress and temperature on creep

Lecture 133 - Creep Mechanisms

Lecture 134 - Composites

Lecture 135 - Isostrain modulus

Lecture 136 - Isostress modulus

Lecture 137 - Fracture

Lecture 138 - Ductile and Brittle Fracture

Lecture 139 - Role of crack size

Lecture 140 - Griffith's Criterion

Lecture 141 - Stress Concentration

Lecture 142 - Ductile to brittle transition

Lecture 143 - Enhancing fracture resistance

Lecture 144 - Toughening of glass: Tempering

Lecture 145 - Toughening of glass: Ion-Exchange

Lecture 146 - Fatigue

Lecture 147 - Sub-Critical crack growth