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NPTEL Courses

Introduction to Materials Science and Engineering

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 )

Instructor

Prof. Rajesh Prasad, Department of Applied Mechanics, IIT Delhi.

Materials science

2018

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

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

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

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 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

Lecture 97 - Quenching and Martensite

Lecture 98 - Austempering and Bainite

Lecture 99 - Tempering