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September 25, 2023

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Description

Introduction to Materials Science and Engineering. Instructor: Prof. Rajesh Prasad, Department of Applied Mechanics, IIT Delhi.

This course is designed as a first introduction to microstructure and mechanical properties of engineering materials for undergraduate engineering students. The focus will be on clear presentation of basic fundamentals of structure and defects of crystalline materials. This will then be used to understand the transformations, heat treatments and mechanical behavior of structural materials. The course will also include several classroom and laboratory demonstrations. The course will also be useful as an introduction to materials science for engineers and scientists in industry, research labs and academic institutions. (from nptel.ac.in)

Course Curriculum

    • Lecture 01 – Introduction Unlimited
    • Lecture 02 – Crystal Geometry Unlimited
    • Lecture 03 – Unit Cell Unlimited
    • Lecture 04 – Classification of Lattices Unlimited
    • Lecture 05 – Gaps in Bravais Lattices Unlimited
    • Lecture 06 – Symmetry Unlimited
    • Lecture 07 – Symmetry (cont.) Unlimited
    • Lecture 08 – Classification of Lattices on the Basis of Symmetry Unlimited
    • Lecture 09 – A Symmetry based Approach to Bravais Lattices Unlimited
    • Lecture 10 – Miller Indices of Directions Unlimited
    • Lecture 11 – Miller Indices for Planes Unlimited
    • Lecture 12 – Miller Indices for a Plane and its Normal in Cubic Crystal Unlimited
    • Lecture 13 – Weiss Zone Law and its Applications Unlimited
    • Lecture 14 – Interplanar Spacing Unlimited
    • Lecture 15 – Bragg’s Law Unlimited
    • Lecture 16 – Close-Packing of Hard Spheres Unlimited
    • Lecture 17 – ABAB Stacking: Hexagonal Close-Packed (HCP) Structure Unlimited
    • Lecture 18 – HCP Crystal Revised: Fractional Coordinates of Atoms in the Motif Unlimited
    • Lecture 19 – C/A Ratio of an Ideal HCP Crystal Unlimited
    • Lecture 20 – ABCABC Stacking: Cubic Close-Packing (CCP) Unlimited
    • Lecture 21 – Voids in Close-Packed Structures Unlimited
    • Lecture 22 – Solid Solutions Unlimited
    • Lecture 23 – Solid Solutions (cont.) Unlimited
    • Lecture 24 – Hume-Rothery Rules Unlimited
    • Lecture 25 – Ordered and Disordered Solid Solutions Unlimited
    • Lecture 26 – Graphene Unlimited
    • Lecture 27 – Structure of Graphite Unlimited
    • Lecture 28 – Structure of Diamond Unlimited
    • Lecture 29 – Carbon Nanotubes (CNT) Unlimited
    • Lecture 30 – Buckminsterfullerene (C60) Unlimited
    • Lecture 31 – Ionic Solids Unlimited
    • Lecture 32 – NaCl Unlimited
    • Lecture 33 – CsCl Unlimited
    • Lecture 34 – ZnS Unlimited
    • Lecture 35 – BCC vs CsCl Unlimited
    • Lecture 36 – Amorphous Solids Unlimited
    • Lecture 37 – Polymers Unlimited
    • Lecture 38 – Vinyl Polymers Unlimited
    • Lecture 39 – Thermoplastics and Thermosets Unlimited
    • Lecture 40 – Tacticity Unlimited
    • Lecture 41 – Copolymers Unlimited
    • Lecture 42 – Crystallinity in Polymers Unlimited
    • Lecture 43 – Defects in Crystals Unlimited
    • Lecture 44 – Vacancies Unlimited
    • Lecture 45 – Edge Dislocation: Half Plane Unlimited
    • Lecture 46 – Edge Dislocation: Slip Unlimited
    • Lecture 47 – Characteristic Vectors of a Dislocation Unlimited
    • Lecture 48 – Edge, Screw and Mixed Dislocations Unlimited
    • Lecture 49 – Screw Dislocations Unlimited
    • Lecture 50 – Burgers Circuit Unlimited
    • Lecture 51 – Elastic Energy of a Dislocation Line Unlimited
    • Lecture 52 – Burgers Vector: Shortest Lattice Translation Unlimited
    • Lecture 53 – Burgers Vector of a Dislocation is Constant along the Line Unlimited
    • Lecture 54 – Dislocation cannot End Abruptly in a Crystal: Free Surface Unlimited
    • Lecture 55 – Dislocation cannot End Abruptly in a Crystal: Grain Boundaries Unlimited
    • Lecture 56 – Dislocation cannot End Abruptly in a Crystal: Dislocation Nodes Unlimited
    • Lecture 57 – Dislocation cannot End Abruptly in a Crystal: Dislocation Loop Unlimited
    • Lecture 58 – Dislocation Motion Unlimited
    • Lecture 59 – 2D Defects: Surfaces or Interfaces Unlimited
    • Lecture 60 – Free Surface or External Surface of a Crystal Unlimited
    • Lecture 61 – Stacking Faults Unlimited
    • Lecture 62 – Twin Boundary Unlimited
    • Lecture 63 – Grain Boundary Unlimited
    • Lecture 64 – Small Angle Symmetric Tilt Boundary Unlimited
    • Lecture 65 – Ball Bearing Model Unlimited
    • Lecture 66 – Phase Diagrams: Introduction Unlimited
    • Lecture 67 – Phase and Components Unlimited
    • Lecture 68 – Uses of Phase Diagrams Unlimited
    • Lecture 69 – Phases Present in the System Unlimited
    • Lecture 70 – Composition of Phases Present in the System Unlimited
    • Lecture 71 – Proportion of Phases Present in the System Unlimited
    • Lecture 72 – Microstructure Evolution during Solidification in Isomorphous Systems Unlimited
    • Lecture 73 – Eutectic System Unlimited
    • Lecture 74 – Eutectic Reaction Unlimited
    • Lecture 75 – Eutectic, Hypoeutectic and Hypereutectic Alloys Unlimited
    • Lecture 76 – Gibbs Phase Rule Unlimited
    • Lecture 77 – Fe-C Phase Diagram Unlimited
    • Lecture 78 – Eutectoid, Hypoeutectoid and Hypereutectoid Steels Unlimited
    • Lecture 79 – Microstructure of a Hypoeutectoid Steel Unlimited
    • Lecture 80 – Microstructure of a Hypereutectoid Steel Unlimited
    • Lecture 81 – Diffusion: Introduction Unlimited
    • Lecture 82 – Fick’s First Law Unlimited
    • Lecture 83 – Fick’s Second Law Unlimited
    • Lecture 84 – Error Function Solution of Fick’s Second Law Unlimited
    • Lecture 85 – Atomic Mechanisms of Diffusion Unlimited
    • Lecture 86 – Substitutional Diffusion Revisited Unlimited
    • Lecture 87 – Diffusion Paths Unlimited
    • Lecture 88 – Steady and Unsteady State Diffusion Unlimited
    • Lecture 89 – Phase Transformations Unlimited
    • Lecture 90 – Nucleation Unlimited
    • Lecture 91 – Nucleation and Capillary Rise Unlimited
    • Lecture 92 – Nucleation, Growth and Overall Transformation Unlimited
    • Lecture 93 – TTT (Time-Temperature-Transformation) Diagram Unlimited
    • Lecture 94 – Homogeneous and Heterogeneous Nucleation Unlimited
    • Lecture 95 – Heat Treatment of Steels Unlimited
    • Lecture 96 – TTT Diagram of Eutectoid Steels Unlimited
    • Lecture 97 – Quenching and Martensite Unlimited
    • Lecture 98 – Austempering and Bainite Unlimited
    • Lecture 99 – Tempering Unlimited
    • Lecture 100 – Residual Stresses and Quench Cracks Unlimited
    • Lecture 101 – Marquenching and Martempering Unlimited
    • Lecture 102 – TTT Diagram of Hypoeutectoid and Hypereutectoid Steels Unlimited
    • Lecture 103 – TTT Diagram of Alloy Steel Unlimited
    • Lecture 104 – Hardenability of Steels Unlimited
    • Lecture 105 – Glass Ceramics Unlimited
    • Lecture 106 – Tensile Test Unlimited
    • Lecture 107 – Plastic Deformation and Crystal Structure Unlimited
    • Lecture 108 – Shape Change without Change in Crystal Structure Unlimited
    • Lecture 109 – Slip Unlimited
    • Lecture 110 – Resolved Shear Stress Unlimited
    • Lecture 111 – CRSS (Critical Resolved Shear Stress) Unlimited
    • Lecture 112 – Schmid’s Law Unlimited
    • Lecture 113 – CRSS: Theory vs Experiment Unlimited
    • Lecture 114 – Why is Experimental CRSS Less Than Theoretical CRSS? Unlimited
    • Lecture 115 – Strengthening Mechanisms Unlimited
    • Lecture 116 – Dislocation Density Unlimited
    • Lecture 117 – Frank-Reed Source Unlimited
    • Lecture 118 – Strain Hardening Unlimited
    • Lecture 119 – Dislocation Interaction Leading to Strain Hardening Unlimited
    • Lecture 120 – Dislocation Interaction Leading to Strain Hardening (cont.) Unlimited
    • Lecture 121 – Solid Solution Hardening Unlimited
    • Lecture 122 – Grain Size Hardening Unlimited
    • Lecture 123 – Age Hardening Unlimited
    • Lecture 124 – Age Hardening (cont.) Unlimited
    • Lecture 125 – Metastable Precipitates Unlimited
    • Lecture 126 – Annealing of Cold-Worked Metals Unlimited
    • Lecture 127 – Recovery Unlimited
    • Lecture 128 – Recrystallization Unlimited
    • Lecture 129 – Grain Growth Unlimited
    • Lecture 130 – True Stress and True Strain Unlimited
    • Lecture 131 – Creep Unlimited
    • Lecture 132 – Effect of Stress and Temperature on Creep Unlimited
    • Lecture 133 – Creep Mechanisms Unlimited
    • Lecture 134 – Composites Unlimited
    • Lecture 135 – Isostrain Modulus Unlimited
    • Lecture 136 – Isostress Modulus Unlimited
    • Lecture 137 – Fracture Unlimited
    • Lecture 138 – Ductile and Brittle Fracture Unlimited
    • Lecture 139 – Role of Crack Size Unlimited
    • Lecture 140 – Griffith’s Criterion Unlimited
    • Lecture 141 – Stress Concentration Unlimited
    • Lecture 142 – Ductile to Brittle Transition Unlimited
    • Lecture 143 – Enhancing Fracture Resistance Unlimited
    • Lecture 144 – Toughening of Glass: Tempering Unlimited
    • Lecture 145 – Toughening of Glass: Ion-Exchange Unlimited
    • Lecture 146 – Fatigue Unlimited
    • Lecture 147 – Subcritical Crack Growth Unlimited

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