Crystallography |
Lecture 01 - Introduction |
Lecture 02 - Crystal Geometry |
Lecture 03 - Unit Cell |
Lecture 04 - Classification of Lattices |
Lecture 05 - Gaps in Bravais Lattices |
Lecture 06 - Symmetry |
Lecture 07 - Symmetry (cont.) |
Lecture 08 - Classification of Lattices on the Basis of Symmetry |
Lecture 09 - A Symmetry based Approach to Bravais Lattices |
Crystallography, Structure of Solids |
Lecture 10 - Miller Indices of Directions |
Lecture 11 - Miller Indices for Planes |
Lecture 12 - Miller Indices for a Plane and its Normal in Cubic Crystal |
Lecture 13 - Weiss Zone Law and its Applications |
Lecture 14 - Interplanar Spacing |
Lecture 15 - Bragg's Law |
Lecture 16 - Close-Packing of Hard Spheres |
Lecture 17 - ABAB Stacking: Hexagonal Close-Packed (HCP) Structure |
Lecture 18 - HCP Crystal Revised: Fractional Coordinates of Atoms in the Motif |
Lecture 19 - C/A Ratio of an Ideal HCP Crystal |
Lecture 20 - ABCABC Stacking: Cubic Close-Packing (CCP) |
Structure of Solids |
Lecture 21 - Voids in Close-Packed Structures |
Lecture 22 - Solid Solutions |
Lecture 23 - Solid Solutions (cont.) |
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 - Thermoplastics and Thermosets |
Lecture 40 - Tacticity |
Lecture 41 - Copolymers |
Lecture 42 - Crystallinity in Polymers |
Defects in Crystalline Solids |
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 - 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 a 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 |
Phase Diagrams |
Lecture 66 - Phase Diagrams: Introduction |
Lecture 67 - Phase 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 |
Diffusion |
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 |
Phase Transformations |
Lecture 89 - Phase Transformations |
Lecture 90 - Nucleation |
Lecture 91 - Nucleation and Capillary Rise |
Lecture 92 - Nucleation, Growth and Overall Transformation |
Lecture 93 - TTT (Time-Temperature-Transformation) Diagram |
Lecture 94 - Homogeneous and Heterogeneous Nucleation |
Lecture 95 - Heat Treatment of Steels |
Lecture 96 - TTT Diagram of Eutectoid Steels |
Phase Transformations, Mechanical Behaviour of Materials |
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 without Change in Crystal Structure |
Lecture 109 - Slip |
Lecture 110 - Resolved Shear Stress |
Lecture 111 - CRSS (Critical Resolved Shear Stress) |
Lecture 112 - Schmid's Law |
Mechanical Behaviour of Materials |
Lecture 113 - CRSS: Theory vs Experiment |
Lecture 114 - Why is Experimental CRSS Less Than Theoretical CRSS? |
Lecture 115 - Strengthening Mechanisms |
Lecture 116 - Dislocation Density |
Lecture 117 - Frank-Reed Source |
Lecture 118 - Strain Hardening |
Lecture 119 - Dislocation Interaction Leading to Strain Hardening |
Lecture 120 - Dislocation Interaction Leading to Strain Hardening (cont.) |
Lecture 121 - Solid Solution Hardening |
Lecture 122 - Grain Size Hardening |
Lecture 123 - Age Hardening |
Lecture 124 - Age Hardening (cont.) |
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 |
Fracture |
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 - Subcritical Crack Growth |