# Defects in Crystalline Solids (Part - I)

- Institution: IIT Kanpur
- Department: Metallurgy and Material Science
- Teacher: Prof. Shashank Shekhar
- Level: Undergraduate
- Language: English
- Subjects: Engineering
- Source: [NPTEL](https://nptel.ac.in/courses/113104081)
- Licence: [CC BY-NC-SA](https://nptel.ac.in/faq) (Non-commercial use only.)
- Syllabus: [at the source](https://nptel.ac.in/courses/113104081)
- Who can watch: Tweens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

At the end of the course, the student should be able to -Have a broad understanding of defects in materials and their role in determining properties of materials

-Have a thorough understanding of the structure of dislocations in various crystals and their elastic fields

-Have an overview of plastic deformation mechanisms and the role of dislocations in plasticity, fracture, fatigue and creep

Intended audience: Undergraduate Students and first year graduate students of following discipline: Materials Engineering, Mechanical Engineering, Metallurgical Engineering, Industrial Engineering, Electrical Engineering

Prerequisites: Under graduate level mathematics, thermodynamics

## Lectures

1. [Lecture 01: Introduction to Defects](https://invisiblenetwork.ai/learn/nptel/113104081/484880d95763) (YouTube)
2. [Lecture 02: Equilibrium Points Defects](https://invisiblenetwork.ai/learn/nptel/113104081/d4eadaf064be) (YouTube)
3. [Lecture 03: Energy of Vacancy Formation](https://invisiblenetwork.ai/learn/nptel/113104081/0b68f2368cc7) (YouTube)
4. [Lecture 04: Vacancy Concentration Measurement Techniques](https://invisiblenetwork.ai/learn/nptel/113104081/bc894a503cce) (YouTube)
5. [Lecture 05: Self-interstitial Defects+Frenkel Defects](https://invisiblenetwork.ai/learn/nptel/113104081/b716914bdf75) (YouTube)
6. [Lecture 06: Schottky Defects+Extrinsic Defects](https://invisiblenetwork.ai/learn/nptel/113104081/174009b0c493) (YouTube)
7. [Lecture 07: Interstitial in Iron](https://invisiblenetwork.ai/learn/nptel/113104081/2cfbfe7a38ca) (YouTube)
8. [Lecture 08: Defects Reaction+Kroger-Vink Notation](https://invisiblenetwork.ai/learn/nptel/113104081/3a4babe584c3) (YouTube)
9. [Lecture 09: Defects Reaction and its Thermodynamics](https://invisiblenetwork.ai/learn/nptel/113104081/0fe5349bee2c) (YouTube)
10. [Lecture 10: Equilibrium Concentration using Defects Reaction](https://invisiblenetwork.ai/learn/nptel/113104081/f0a7d4bc4ae8) (YouTube)
11. [Lecture 11: Examples on Defects Reaction](https://invisiblenetwork.ai/learn/nptel/113104081/0984919cc9d9) (YouTube)
12. [Lecture 12: Diffusion(Interstitial Diffusion)](https://invisiblenetwork.ai/learn/nptel/113104081/7fab3e358f13) (YouTube)
13. [Lecture 13: Non-Steady State Diffusion](https://invisiblenetwork.ai/learn/nptel/113104081/ff77555231a0) (YouTube)
14. [Lecture 14: Self-diffusion+Examples](https://invisiblenetwork.ai/learn/nptel/113104081/dc4a89ce980b) (YouTube)
15. [Lecture 15: Diffusion in Substitutional Alloys+Diffusion along Defects](https://invisiblenetwork.ai/learn/nptel/113104081/84ed8165c4c5) (YouTube)
16. [Lecture 16: History of Dislocations](https://invisiblenetwork.ai/learn/nptel/113104081/eae25d25af2b) (YouTube)
17. [Lecture 17: Volterra Model+Structure of Dislocation+Burger Vectors](https://invisiblenetwork.ai/learn/nptel/113104081/26d59ebda8e7) (YouTube)
18. [Lecture 18: Characteristics of Dislocations](https://invisiblenetwork.ai/learn/nptel/113104081/e4747c192252) (YouTube)
19. [Lecture 19: Mixed Dislocations+Dislocation Loops](https://invisiblenetwork.ai/learn/nptel/113104081/24ee121b8ab4) (YouTube)
20. [Lecture 20: Elastic Continuum Model+Strain field for Screw Dislocations](https://invisiblenetwork.ai/learn/nptel/113104081/c9950890b881) (YouTube)
21. [Lecture 21: Stress and Strain Fields](https://invisiblenetwork.ai/learn/nptel/113104081/46e9190e5693) (YouTube)
22. [Lecture 22: Stress State around Edge Dislocations+Elastic Energy of Dislocations](https://invisiblenetwork.ai/learn/nptel/113104081/f1527c240c18) (YouTube)
23. [Lecture 23: Glide Forces on Dislocations+Line Tension on Dislocations](https://invisiblenetwork.ai/learn/nptel/113104081/b4b131da0e5d) (YouTube)
24. [Lecture 24: Climb Forces on Dislocations+Interaction Between Dislocations](https://invisiblenetwork.ai/learn/nptel/113104081/7c18cfa7b4e7) (YouTube)
25. [Lecture 25: Image Forces on Dislocations](https://invisiblenetwork.ai/learn/nptel/113104081/5e39c03a78df) (YouTube)
26. [Lecture 26: Resistance to Dislocation Motion+Peierl Nebarro Valley](https://invisiblenetwork.ai/learn/nptel/113104081/1de5b19eac05) (YouTube)
27. [Lecture 27: Slip System+Examples](https://invisiblenetwork.ai/learn/nptel/113104081/d75577323370) (YouTube)
28. [Lecture 28: Dislocations and Slips+Examples](https://invisiblenetwork.ai/learn/nptel/113104081/a5a7f16bb78d) (YouTube)
29. [Lecture 29: Critical resolved Shear Stress+Examples Contd...](https://invisiblenetwork.ai/learn/nptel/113104081/65be1ad84dd4) (YouTube)
30. [Lecture 30: Glide+Kinks](https://invisiblenetwork.ai/learn/nptel/113104081/4487706c2ad9) (YouTube)
31. [Lecture 01:Cross-slip + Climb](https://invisiblenetwork.ai/learn/nptel/113104081/bafba52fcda7) (YouTube)
32. [Lecture 02: Climb + Jogs](https://invisiblenetwork.ai/learn/nptel/113104081/d14ee312bc2b) (YouTube)
33. [Lecture 03: Examples on Jogs +Dislocation Intersection](https://invisiblenetwork.ai/learn/nptel/113104081/611be40c3565) (YouTube)
34. [Lecture 04: Dislocation intersection and step characteristics + Superjogs](https://invisiblenetwork.ai/learn/nptel/113104081/4d783ec154a0) (YouTube)
35. [Lecture 05: Strain and strain-rate due to dislocation motion + Velocity of dislocations](https://invisiblenetwork.ai/learn/nptel/113104081/bfe118a90896) (YouTube)
36. [Lecture 01: Observation of dislocation contd...+ Dislocation Dynamics](https://invisiblenetwork.ai/learn/nptel/113104081/33b2f493a901) (YouTube)
37. [Lecture 02: Dislocations in FCC + Partial dislocations](https://invisiblenetwork.ai/learn/nptel/113104081/8670719f0645) (YouTube)
38. [Lecture 03: Partial dislocations contd...+ Stacking Fault](https://invisiblenetwork.ai/learn/nptel/113104081/e1e6b58d0b70) (YouTube)
39. [Lecture 04: Thompson's Tetrahedron+Examples](https://invisiblenetwork.ai/learn/nptel/113104081/03f3a53d84a0) (YouTube)
40. [Lecture 05: Dislocations in BCC+Asymmetry of Slip](https://invisiblenetwork.ai/learn/nptel/113104081/ca45b3537fb6) (YouTube)