NPTEL : NOC:Defects in Crystalline Solids - Part I (Metallurgy and Material Science)

Co-ordinators : Prof. Shashank Shekhar


Lecture 1 - Introduction to Defects

Lecture 2 - Equilibrium Points Defects

Lecture 3 - Energy of Vacancy Formation

Lecture 4 - Vacancy Concentration Measurement Techniques

Lecture 5 - Self-interstitial Defects+Frenkel Defects

Lecture 6 - Schottky Defects+Extrinsic Defects

Lecture 7 - Interstitials in Iron

Lecture 8 - Defects Reaction+Kroger-Vink Notation

Lecture 9 - Defects Reaction and its Thermodynamics

Lecture 10 - Equilibrium Concentration using Defects Reaction

Lecture 11 - Examples on defect reaction

Lecture 12 - Diffusion (Interstitial Diffusion)

Lecture 13 - Non-steady state diffusion

Lecture 14 - Self-diffusion + Examples

Lecture 15 - Diffusion in substitutional alloys+Diffusion along defects

Lecture 16 - History of Dislocations

Lecture 17 - Volterra Model + Structure of Dislocations + Burger vectors

Lecture 18 - Characteristics of Dislocations

Lecture 19 - Mixed Dislocations + Dislocation Loops

Lecture 20 - Elastic Continuum Model + Strain field for screw dislocations

Lecture 21 - Stress and Strain Fields

Lecture 22 - Stress State around Edge Dislocations+Elastic Energy of Dislocations

Lecture 23 - Glide Forces on Dislocations+Line Tension on Dislocations

Lecture 24 - Climb Forces on Dislocations+Interaction Between Dislocations

Lecture 25 - Image Forces on Dislocations

Lecture 26 - Resistance to Dislocation Motion+Peierl Nebarro Valley

Lecture 27 - Slip System+Examples

Lecture 28 - Dislocations and Slips+Examples

Lecture 29 - Critical resolved Shear Stress+Examples (Continued...)

Lecture 30 - Glide+Kinks

Lecture 31 - Cross-slip+Climb

Lecture 32 - Climb+Jogs

Lecture 33 - Examples on Jogs+Dislocation Intersection

Lecture 34 - Dislocation Intersection and step characteristics+Superjogs

Lecture 35 - Strain and strain-rate due to dislocation motion+Velocity of dislocations+Observation of dislocations

Lecture 36 - Observation of dislocation (Continued...) + Dislocation Dynamics

Lecture 37 - Dislocations in FCC+Partial dislocations

Lecture 38 - Partial dislocations (Continued...) +Stacking Fault

Lecture 39 - Thompson's Tetrahedron+Examples

Lecture 40 - Dislocations in BCC+Asymmetry of Slip