Канал: Introduction to Materials Science and Engineering

Doubt Solving Session #1

Doubt Solving Session #1

Enhancing Fracture Resistance

Enhancing Fracture Resistance

Ductile to Brittle Transition

Ductile to Brittle Transition

Toughening of Glass: Ion-Exchange

Toughening of Glass: Ion-Exchange

Stress Concentration

Stress Concentration

Fatigue

Fatigue

Toughening of Glass: Tempering

Toughening of Glass: Tempering

Griffith's Criterion

Griffith's Criterion

Ductile and Brittle Fracture

Ductile and Brittle Fracture

Fracture

Fracture

Role of Crack Size

Role of Crack Size

Isostress Modulus

Isostress Modulus

Creep Mechanisms

Creep Mechanisms

Effect of Stress and Temperature on Creep

Effect of Stress and Temperature on Creep

Sub-critical Crack Growth

Sub-critical Crack Growth

True stress and True Strain

True stress and True Strain

Isostrain Modulus

Isostrain Modulus

Composites

Composites

Creep: Introduction

Creep: Introduction

Strengthening mechanisms

Strengthening mechanisms

Grain growth

Grain growth

Frank-Read source

Frank-Read source

Recovery

Recovery

Annealing of cold-worked metals

Annealing of cold-worked metals

Dislocation density

Dislocation density

Age hardening I: Introduction

Age hardening I: Introduction

CRSS: Theory vs experiment

CRSS: Theory vs experiment

Why is experimental CRSS less than theoretical CRSS?

Why is experimental CRSS less than theoretical CRSS?

Recrystallisation

Recrystallisation

Age hardening II: Microstructure and mechanisms

Age hardening II: Microstructure and mechanisms

Metastable precipitates

Metastable precipitates

Strain hardening

Strain hardening

Dislocation interaction leading to strain hardening II

Dislocation interaction leading to strain hardening II

Solid solution hardening

Solid solution hardening

Dislocation interaction leading to strain hardening I

Dislocation interaction leading to strain hardening I

Grain size hardening

Grain size hardening

LIVE_Introduction to Material Science and Engineering

LIVE_Introduction to Material Science and Engineering

Introduction to Materials Science and Engineering Live Stream

Introduction to Materials Science and Engineering Live Stream

Schmid’s law

Schmid’s law

Residual Stresses and Quench Cracks

Residual Stresses and Quench Cracks

TTT Diagram of Alloy Steel

TTT Diagram of Alloy Steel

Tempering

Tempering

Quenching and Martensite

Quenching and Martensite

Marquenching or Martempering

Marquenching or Martempering

CRSS

CRSS

TTT diagram of Hypoeutectoid and Hypereutectoid steels

TTT diagram of Hypoeutectoid and Hypereutectoid steels

Austempering and Bainite

Austempering and Bainite

Slip

Slip

Tensile Test

Tensile Test

Plastic Deformation and Crystal Structure

Plastic Deformation and Crystal Structure

Shape Change Without Change in Crystal Structure

Shape Change Without Change in Crystal Structure

Hardenability of steels

Hardenability of steels

Glass Ceramics

Glass Ceramics

Resolved Shear Stress

Resolved Shear Stress

Proof of Lever Rule

Proof of Lever Rule

Turbine Blades: Creep Resistant Materials and Design

Turbine Blades: Creep Resistant Materials and Design

Regular/Platonic Solids

Regular/Platonic Solids

Interstitial Voids in BCC Crystals

Interstitial Voids in BCC Crystals

Comet: A case study of fatigue

Comet: A case study of fatigue

Miller-Bravais Indices for hexagonal crystals

Miller-Bravais Indices for hexagonal crystals

Heat Treatment of plain carbon steels

Heat Treatment of plain carbon steels

Nucleation and capillary rise

Nucleation and capillary rise

TTT diagram of Eutectoid Steels

TTT diagram of Eutectoid Steels

Homogeneous and heterogeneous nucleation

Homogeneous and heterogeneous nucleation

Nucleation

Nucleation

Nucleation, growth and overall transformation

Nucleation, growth and overall transformation

Phase transformations

Phase transformations

Time-temperature-transformation (TTT) diagram

Time-temperature-transformation (TTT) diagram

Fick's Second Law

Fick's Second Law

Error function solution of Fick's second law

Error function solution of Fick's second law

Steady and Unsteady State Diffusion

Steady and Unsteady State Diffusion

Eutectoid, Hypoeutectoid and Hypereutectoid steels

Eutectoid, Hypoeutectoid and Hypereutectoid steels

Microstructure of a Hypoeutectoid Steel

Microstructure of a Hypoeutectoid Steel

Fick's First Law

Fick's First Law

Microstructure of a Hypereutectoid Steel (Contd)

Microstructure of a Hypereutectoid Steel (Contd)

Diffusion: Introduction

Diffusion: Introduction

Atomic Mechanisms of Diffusion

Atomic Mechanisms of Diffusion

Diffusion Paths

Diffusion Paths

Substitutional Diffusion Revisited

Substitutional Diffusion Revisited

Phase diagrams: Introduction

Phase diagrams: Introduction

Fe-C phase diagram

Fe-C phase diagram

Microstructure evolution during solidification in isomorphous systems

Microstructure evolution during solidification in isomorphous systems

Uses of phase diagrams

Uses of phase diagrams

Proportion of phases present in the system

Proportion of phases present in the system

Phases and components

Phases and components

Eutectic reaction

Eutectic reaction

Eutectic system

Eutectic system

Eutectic, hypoeutectic and hypereutectic alloys

Eutectic, hypoeutectic and hypereutectic alloys

Phases present in the system

Phases present in the system

Gibbs’ phase rule

Gibbs’ phase rule

Composition of phases present in the system

Composition of phases present in the system

MSE Video 59: 2D Defects: Surfaces or Interfaces

MSE Video 59: 2D Defects: Surfaces or Interfaces

Dislocation cannot end abruptly in a crystal: Free surface

Dislocation cannot end abruptly in a crystal: Free surface

Dislocation cannot end abruptly in a crystal: Grain boundaries

Dislocation cannot end abruptly in a crystal: Grain boundaries

Dislocation cannot end abruptly in a crystal: Dislocation nodes

Dislocation cannot end abruptly in a crystal: Dislocation nodes

MSE 57: Dislocation cannot end abruptly in a crystal: Dislocation loop

MSE 57: Dislocation cannot end abruptly in a crystal: Dislocation loop

Dislocation motion

Dislocation motion

Free surface or external surface of a crystal

Free surface or external surface of a crystal

Stacking Faults

Stacking Faults

Twin boundary

Twin boundary

Grain Boundary

Grain Boundary

Small Angle Symmetric Tilt Boundary

Small Angle Symmetric Tilt Boundary

Ball bearing model to demonstrate defects in crystals

Ball bearing model to demonstrate defects in crystals

Edge, screw and mixed dislocations

Edge, screw and mixed dislocations

Characteristic vectors of a dislocation

Characteristic vectors of a dislocation

Vacancies

Vacancies

Burgers circuit

Burgers circuit

Burgers vector of a dislocation is constant along the line

Burgers vector of a dislocation is constant along the line

Edge dislocation: Half plane

Edge dislocation: Half plane

Defects in Crystals

Defects in Crystals

Edge dislocation: Slip

Edge dislocation: Slip

Burgers vector: Shortest lattice translation

Burgers vector: Shortest lattice translation

Screw dislocations

Screw dislocations

Elastic energy of a dislocation line

Elastic energy of a dislocation line

ZnS

ZnS

Ionic solids

Ionic solids

NaCl

NaCl

Buckminsterfullerene (C60)

Buckminsterfullerene (C60)

Amorphous Solids

Amorphous Solids

Polymers

Polymers

Vinyl Polymers

Vinyl Polymers

Carbon Nanotubes (CNT)

Carbon Nanotubes (CNT)

CsCl

CsCl

BCC vs CsCl

BCC vs CsCl

Thermoplasts and Thermosets

Thermoplasts and Thermosets

Copolymers

Copolymers

Tacticity

Tacticity

Crystallinity in Polymers

Crystallinity in Polymers

History of Cyrstallography

History of Cyrstallography

Sodium chloride (NaCl) molecule: A scientific controversy

Sodium chloride (NaCl) molecule: A scientific controversy

Voids in close-packed structures

Voids in close-packed structures

Solid solutions II

Solid solutions II

Ordered and Disordered Solid Solutions

Ordered and Disordered Solid Solutions

Hume-Rothery rules

Hume-Rothery rules

Solid solutions I

Solid solutions I

Structure of graphite

Structure of graphite

Graphene

Graphene

Structure of diamond

Structure of diamond

Miller Indices for Planes

Miller Indices for Planes

Miller Indices for a plane and its normal in Cubic Crystal

Miller Indices for a plane and its normal in Cubic Crystal

c/a ratio of an ideal HCP crystal

c/a ratio of an ideal HCP crystal

ABCABC stacking: Cubic Close-packing (CCP)

ABCABC stacking: Cubic Close-packing (CCP)

Lattice and motif of HCP crystals

Lattice and motif of HCP crystals

16: Close-packing of Hard Spheres

16: Close-packing of Hard Spheres

Weiss Zone law and its applications

Weiss Zone law and its applications

Miller Indices of Directions

Miller Indices of Directions

17 ABAB stacking: Hexagonal Close-Packed (HCP) structure

17 ABAB stacking: Hexagonal Close-Packed (HCP) structure

Bragg’s Law

Bragg’s Law

Inter-planar spacing

Inter-planar spacing

Symmetry II

Symmetry II

Symmetry I

Symmetry I

Classification of lattices on the basis of symmetry

Classification of lattices on the basis of symmetry

A symmetry based approach to Bravais lattices

A symmetry based approach to Bravais lattices

1.5 Gaps in Bravais lattices

1.5 Gaps in Bravais lattices

1.4 Classification of latices

1.4 Classification of latices

1.3 Unit cell

1.3 Unit cell

1.2 Crystal geometry

1.2 Crystal geometry

1.1 Introduction

1.1 Introduction

Introduction by Prof. Rajesh Prasad

Introduction by Prof. Rajesh Prasad