# Introduction to materials science and engineering

- Institution: IIT Delhi
- Department: Metallurgy and Material Science
- Teacher: Prof. Rajesh Prasad
- Level: Undergraduate
- Language: English
- Subjects: Engineering
- Source: [NPTEL](https://nptel.ac.in/courses/113102080)
- Licence: [CC BY-NC-SA](https://nptel.ac.in/faq) (Non-commercial use only.)
- Syllabus: [at the source](https://nptel.ac.in/courses/113102080)
- Who can watch: Tweens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

## Lectures

1. [1.1 Introduction](https://invisiblenetwork.ai/learn/nptel/113102080/195f0784e207) (Video)
2. [1.2 Crystal geometry](https://invisiblenetwork.ai/learn/nptel/113102080/562cd78c53cb) (Video)
3. [1.3 Unit cell](https://invisiblenetwork.ai/learn/nptel/113102080/ecadef73f73a) (Video)
4. [1.4 Classification of latices](https://invisiblenetwork.ai/learn/nptel/113102080/ab4852f0cce6) (Video)
5. [1.5 Gaps in Bravais lattices](https://invisiblenetwork.ai/learn/nptel/113102080/6854d1cd86f1) (Video)
6. [Symmetry I](https://invisiblenetwork.ai/learn/nptel/113102080/19cc7e5ad0e9) (Video)
7. [Symmetry II](https://invisiblenetwork.ai/learn/nptel/113102080/e1a96d12f772) (Video)
8. [Classification of lattices on the basis of symmetry](https://invisiblenetwork.ai/learn/nptel/113102080/02316002611d) (Video)
9. [A symmetry based approach to Bravais lattices](https://invisiblenetwork.ai/learn/nptel/113102080/ee6df6dd7f0e) (Video)
10. [Miller Indices of Directions](https://invisiblenetwork.ai/learn/nptel/113102080/43354cd7fd05) (Video)
11. [Miller Indices for Planes](https://invisiblenetwork.ai/learn/nptel/113102080/dadc29d23f18) (Video)
12. [Miller Indices for a plane and its normal in Cubic Crystal](https://invisiblenetwork.ai/learn/nptel/113102080/aa509b587eef) (Video)
13. [Weiss Zone law and its applications](https://invisiblenetwork.ai/learn/nptel/113102080/1b73a30edd2f) (Video)
14. [Inter-planar spacing](https://invisiblenetwork.ai/learn/nptel/113102080/e20f988739c9) (Video)
15. [Bragg’s Law](https://invisiblenetwork.ai/learn/nptel/113102080/9480e5fbc7db) (Video)
16. [16: Close-packing of Hard Spheres](https://invisiblenetwork.ai/learn/nptel/113102080/a69cc804de34) (Video)
17. [17 ABAB stacking: Hexagonal Close-Packed (HCP) structure](https://invisiblenetwork.ai/learn/nptel/113102080/eb598c8fd806) (Video)
18. [Lattice and motif of HCP crystals](https://invisiblenetwork.ai/learn/nptel/113102080/a54141bd0b5b) (Video)
19. [c/a ratio of an ideal HCP crystal](https://invisiblenetwork.ai/learn/nptel/113102080/393e872ad86a) (Video)
20. [ABCABC stacking: Cubic Close-packing (CCP)](https://invisiblenetwork.ai/learn/nptel/113102080/707ae917a689) (Video)
21. [Voids in close-packed structures](https://invisiblenetwork.ai/learn/nptel/113102080/10107d8a0a1f) (Video)
22. [Solid solutions I](https://invisiblenetwork.ai/learn/nptel/113102080/a8afc43a9c8e) (Video)
23. [Solid solutions II](https://invisiblenetwork.ai/learn/nptel/113102080/19d73762d910) (Video)
24. [Hume-Rothery rules](https://invisiblenetwork.ai/learn/nptel/113102080/20c301a60039) (Video)
25. [Ordered and Disordered Solid Solutions](https://invisiblenetwork.ai/learn/nptel/113102080/2ca5bb98d669) (Video)
26. [Graphene](https://invisiblenetwork.ai/learn/nptel/113102080/a51847bb8867) (Video)
27. [Structure of graphite](https://invisiblenetwork.ai/learn/nptel/113102080/aaef3a384f4a) (Video)
28. [Structure of diamond](https://invisiblenetwork.ai/learn/nptel/113102080/532c49f0976e) (Video)
29. [Carbon Nanotubes (CNT)](https://invisiblenetwork.ai/learn/nptel/113102080/4482e3897ae3) (Video)
30. [Buckminsterfullerene (C60)](https://invisiblenetwork.ai/learn/nptel/113102080/1d8ca10bc7b5) (Video)
31. [Ionic solids](https://invisiblenetwork.ai/learn/nptel/113102080/dba1741bf30e) (Video)
32. [NaCl](https://invisiblenetwork.ai/learn/nptel/113102080/a426d43245f0) (Video)
33. [CsCl](https://invisiblenetwork.ai/learn/nptel/113102080/5d42a3a665da) (Video)
34. [ZnS](https://invisiblenetwork.ai/learn/nptel/113102080/38fffa35ab62) (Video)
35. [BCC vs CsCl](https://invisiblenetwork.ai/learn/nptel/113102080/b7971988be04) (Video)
36. [Amorphous Solids](https://invisiblenetwork.ai/learn/nptel/113102080/bd97ad7d6422) (Video)
37. [Polymers](https://invisiblenetwork.ai/learn/nptel/113102080/1129ac47b33a) (Video)
38. [Vinyl Polymers](https://invisiblenetwork.ai/learn/nptel/113102080/9caf02f4df3e) (Video)
39. [Thermoplasts and Thermosets](https://invisiblenetwork.ai/learn/nptel/113102080/9f0f4ef69d3a) (Video)
40. [Tacticity](https://invisiblenetwork.ai/learn/nptel/113102080/4eb4a973bfce) (Video)
41. [Copolymers](https://invisiblenetwork.ai/learn/nptel/113102080/a670afe29c0f) (Video)
42. [Crystallinity in Polymers](https://invisiblenetwork.ai/learn/nptel/113102080/c99d85b74bf1) (Video)
43. [Defects in Crystals](https://invisiblenetwork.ai/learn/nptel/113102080/6ab716db1b8c) (Video)
44. [Vacancies](https://invisiblenetwork.ai/learn/nptel/113102080/4c41c92416ae) (Video)
45. [Edge dislocation: Half plane](https://invisiblenetwork.ai/learn/nptel/113102080/24f9be708313) (Video)
46. [Edge dislocation: Slip](https://invisiblenetwork.ai/learn/nptel/113102080/df02aa805630) (Video)
47. [Characteristic vectors of a dislocation](https://invisiblenetwork.ai/learn/nptel/113102080/416f342eff32) (Video)
48. [Edge, screw and mixed dislocations](https://invisiblenetwork.ai/learn/nptel/113102080/2dfb7b9441f4) (Video)
49. [Screw dislocations](https://invisiblenetwork.ai/learn/nptel/113102080/e3d287ab0e4e) (Video)
50. [Burgers circuit](https://invisiblenetwork.ai/learn/nptel/113102080/11e8c2ae5dea) (Video)
51. [Elastic energy of a dislocation line](https://invisiblenetwork.ai/learn/nptel/113102080/f74044f0330a) (Video)
52. [Burgers vector: Shortest lattice translation](https://invisiblenetwork.ai/learn/nptel/113102080/0a26fbf874b8) (Video)
53. [Burgers vector of a dislocation is constant along the line](https://invisiblenetwork.ai/learn/nptel/113102080/c7fa93e206d9) (Video)
54. [Dislocation cannot end abruptly in a crystal: Free surface](https://invisiblenetwork.ai/learn/nptel/113102080/116dd66038c6) (Video)
55. [Dislocation cannot end abruptly in a crystal: Grain boundaries](https://invisiblenetwork.ai/learn/nptel/113102080/427da8e69f9c) (Video)
56. [Dislocation cannot end abruptly in a crystal: Dislocation nodes](https://invisiblenetwork.ai/learn/nptel/113102080/3526759373f8) (Video)
57. [MSE 57: Dislocation cannot end abruptly in a crystal: Dislocation loop](https://invisiblenetwork.ai/learn/nptel/113102080/7305570ca8d6) (Video)
58. [Dislocation motion](https://invisiblenetwork.ai/learn/nptel/113102080/245c4b8bf696) (Video)
59. [MSE Video 59: 2D Defects: Surfaces or Interfaces](https://invisiblenetwork.ai/learn/nptel/113102080/2015299458e1) (Video)
60. [Free surface or external surface of a crystal](https://invisiblenetwork.ai/learn/nptel/113102080/c3bbc352f14d) (Video)
61. [Stacking Faults](https://invisiblenetwork.ai/learn/nptel/113102080/4310ec8a43c7) (Video)
62. [Twin boundary](https://invisiblenetwork.ai/learn/nptel/113102080/1e9b6bf38bdf) (Video)
63. [Grain Boundary](https://invisiblenetwork.ai/learn/nptel/113102080/b88c4a1d0af8) (Video)
64. [Small Angle Symmetric Tilt Boundary](https://invisiblenetwork.ai/learn/nptel/113102080/81b4a2e28802) (Video)
65. [Ball bearing model to demonstrate defects in crystals](https://invisiblenetwork.ai/learn/nptel/113102080/ccd507deac42) (Video)
66. [Phase diagrams: Introduction](https://invisiblenetwork.ai/learn/nptel/113102080/0233812b0598) (Video)
67. [Phases and components](https://invisiblenetwork.ai/learn/nptel/113102080/65cd272d8640) (Video)
68. [Uses of phase diagrams](https://invisiblenetwork.ai/learn/nptel/113102080/d99c7f2b7666) (Video)
69. [Phases present in the system](https://invisiblenetwork.ai/learn/nptel/113102080/ac15ad6a4033) (Video)
70. [Composition of phases present in the system](https://invisiblenetwork.ai/learn/nptel/113102080/a7fdb86f404d) (Video)
71. [Proportion of phases present in the system](https://invisiblenetwork.ai/learn/nptel/113102080/41b42ac7332d) (Video)
72. [Microstructure evolution during solidification in isomorphous systems](https://invisiblenetwork.ai/learn/nptel/113102080/0986510b0dfb) (Video)
73. [Eutectic system](https://invisiblenetwork.ai/learn/nptel/113102080/907b7de8786b) (Video)
74. [Eutectic reaction](https://invisiblenetwork.ai/learn/nptel/113102080/0271c0d8a92c) (Video)
75. [Eutectic, hypoeutectic and hypereutectic alloys](https://invisiblenetwork.ai/learn/nptel/113102080/f86584c6c903) (Video)
76. [Gibbs’ phase rule](https://invisiblenetwork.ai/learn/nptel/113102080/c46028c9126b) (Video)
77. [Fe-C phase diagram](https://invisiblenetwork.ai/learn/nptel/113102080/8d43d4333fad) (Video)
78. [Eutectoid, Hypoeutectoid and Hypereutectoid steels](https://invisiblenetwork.ai/learn/nptel/113102080/c12db1547ede) (Video)
79. [Microstructure of a Hypoeutectoid Steel](https://invisiblenetwork.ai/learn/nptel/113102080/14af0e67e946) (Video)
80. [Microstructure of a Hypereutectoid Steel (Contd)](https://invisiblenetwork.ai/learn/nptel/113102080/3e73473c15ee) (Video)
81. [Diffusion: Introduction](https://invisiblenetwork.ai/learn/nptel/113102080/8e05d8135eee) (Video)
82. [Fick's First Law](https://invisiblenetwork.ai/learn/nptel/113102080/d78f67d92557) (Video)
83. [Fick's Second Law](https://invisiblenetwork.ai/learn/nptel/113102080/eb97828af000) (Video)
84. [Error function solution of Fick's second law](https://invisiblenetwork.ai/learn/nptel/113102080/90bdaba7755b) (Video)
85. [Atomic Mechanisms of Diffusion](https://invisiblenetwork.ai/learn/nptel/113102080/4197e2a4a1f1) (Video)
86. [Substitutional Diffusion Revisited](https://invisiblenetwork.ai/learn/nptel/113102080/ff0342f12c24) (Video)
87. [Diffusion Paths](https://invisiblenetwork.ai/learn/nptel/113102080/5f08818c696f) (Video)
88. [Steady and Unsteady State Diffusion](https://invisiblenetwork.ai/learn/nptel/113102080/f1de0fc62ed7) (Video)
89. [Phase transformations](https://invisiblenetwork.ai/learn/nptel/113102080/294414e66290) (Video)
90. [Nucleation](https://invisiblenetwork.ai/learn/nptel/113102080/fe16d2ab3f19) (Video)
91. [Nucleation and capillary rise](https://invisiblenetwork.ai/learn/nptel/113102080/30cb3debc02e) (Video)
92. [Nucleation, growth and overall transformation](https://invisiblenetwork.ai/learn/nptel/113102080/3329afb6288a) (Video)
93. [Time-temperature-transformation (TTT) diagram](https://invisiblenetwork.ai/learn/nptel/113102080/6038500adbb4) (Video)
94. [Homogeneous and heterogeneous nucleation](https://invisiblenetwork.ai/learn/nptel/113102080/0f39cc131683) (Video)
95. [Heat Treatment of plain carbon steels](https://invisiblenetwork.ai/learn/nptel/113102080/6ffbcbc2e760) (Video)
96. [TTT diagram of Eutectoid Steels](https://invisiblenetwork.ai/learn/nptel/113102080/497b15239dbb) (Video)
97. [Quenching and Martensite](https://invisiblenetwork.ai/learn/nptel/113102080/9ffff7c1eb37) (Video)
98. [Austempering and Bainite](https://invisiblenetwork.ai/learn/nptel/113102080/e43a44892bc8) (Video)
99. [Tempering](https://invisiblenetwork.ai/learn/nptel/113102080/4d053077e624) (Video)
100. [Residual Stresses and Quench Cracks](https://invisiblenetwork.ai/learn/nptel/113102080/f4cf54c1ef72) (Video)
101. [Marquenching or Martempering](https://invisiblenetwork.ai/learn/nptel/113102080/9a4d8f151b66) (Video)
102. [TTT diagram of Hypoeutectoid and Hypereutectoid steels](https://invisiblenetwork.ai/learn/nptel/113102080/0ae491ed00a0) (Video)
103. [TTT Diagram of Alloy Steel](https://invisiblenetwork.ai/learn/nptel/113102080/4e6a4720d434) (Video)
104. [Hardenability of steels](https://invisiblenetwork.ai/learn/nptel/113102080/1518811d630d) (Video)
105. [Glass Ceramics](https://invisiblenetwork.ai/learn/nptel/113102080/9fd98e4d2622) (Video)
106. [Tensile Test](https://invisiblenetwork.ai/learn/nptel/113102080/f7b9b805df92) (Video)
107. [Plastic Deformation and Crystal Structure](https://invisiblenetwork.ai/learn/nptel/113102080/d72ff5b98db7) (Video)
108. [Shape Change Without Change in Crystal Structure](https://invisiblenetwork.ai/learn/nptel/113102080/504bcea66d5d) (Video)
109. [Slip](https://invisiblenetwork.ai/learn/nptel/113102080/074078083e02) (Video)
110. [Resolved Shear Stress](https://invisiblenetwork.ai/learn/nptel/113102080/faba7f222bab) (Video)
111. [CRSS](https://invisiblenetwork.ai/learn/nptel/113102080/6e0d4de169d0) (Video)
112. [Schmid’s law](https://invisiblenetwork.ai/learn/nptel/113102080/0148a5493c36) (Video)
113. [CRSS: Theory vs experiment](https://invisiblenetwork.ai/learn/nptel/113102080/8c9068e2445e) (Video)
114. [Why is experimental CRSS less than theoretical CRSS?](https://invisiblenetwork.ai/learn/nptel/113102080/37cf0afddd6a) (Video)
115. [Strengthening mechanisms](https://invisiblenetwork.ai/learn/nptel/113102080/76a63a573cc6) (Video)
116. [Dislocation density](https://invisiblenetwork.ai/learn/nptel/113102080/6083a79e7300) (Video)
117. [Frank-Read source](https://invisiblenetwork.ai/learn/nptel/113102080/b0a3f0160e30) (Video)
118. [Strain hardening](https://invisiblenetwork.ai/learn/nptel/113102080/dbbf20c58386) (Video)
119. [Dislocation interaction leading to strain hardening I](https://invisiblenetwork.ai/learn/nptel/113102080/cc52089c38cc) (Video)
120. [Dislocation interaction leading to strain hardening II](https://invisiblenetwork.ai/learn/nptel/113102080/cd37d36a05a3) (Video)
121. [Solid solution hardening](https://invisiblenetwork.ai/learn/nptel/113102080/6c9dfb7959ff) (Video)
122. [Grain size hardening](https://invisiblenetwork.ai/learn/nptel/113102080/d535cd582fb1) (Video)
123. [Age hardening I: Introduction](https://invisiblenetwork.ai/learn/nptel/113102080/6f674946ad7c) (Video)
124. [Age hardening II: Microstructure and mechanisms](https://invisiblenetwork.ai/learn/nptel/113102080/f67d7327fefa) (Video)
125. [Metastable precipitates](https://invisiblenetwork.ai/learn/nptel/113102080/bdffea6a87f0) (Video)
126. [Annealing of cold-worked metals](https://invisiblenetwork.ai/learn/nptel/113102080/86ab75be1283) (Video)
127. [Recovery](https://invisiblenetwork.ai/learn/nptel/113102080/49929ab97261) (Video)
128. [Recrystallisation](https://invisiblenetwork.ai/learn/nptel/113102080/2211c901ef46) (Video)
129. [Grain growth](https://invisiblenetwork.ai/learn/nptel/113102080/4b4ae06e7b3e) (Video)
130. [True stress and True Strain](https://invisiblenetwork.ai/learn/nptel/113102080/c94842344040) (Video)
131. [Creep: Introduction](https://invisiblenetwork.ai/learn/nptel/113102080/ec0135c33240) (Video)
132. [Effect of Stress and Temperature on Creep](https://invisiblenetwork.ai/learn/nptel/113102080/25524f6e73bf) (Video)
133. [Creep Mechanisms](https://invisiblenetwork.ai/learn/nptel/113102080/1a256cc40ff3) (Video)
134. [Composites](https://invisiblenetwork.ai/learn/nptel/113102080/8a2894ac366c) (Video)
135. [Isostrain Modulus](https://invisiblenetwork.ai/learn/nptel/113102080/3d3eb87ef1c5) (Video)
136. [Isostress Modulus](https://invisiblenetwork.ai/learn/nptel/113102080/055891e56a86) (Video)
137. [Fracture](https://invisiblenetwork.ai/learn/nptel/113102080/3406eda549c0) (Video)
138. [Ductile and Brittle Fracture](https://invisiblenetwork.ai/learn/nptel/113102080/797c40991de3) (Video)
139. [Role of Crack Size](https://invisiblenetwork.ai/learn/nptel/113102080/742be07e607d) (Video)
140. [Griffith's Criterion](https://invisiblenetwork.ai/learn/nptel/113102080/c46a47252cbd) (Video)
141. [Stress Concentration](https://invisiblenetwork.ai/learn/nptel/113102080/714571da42be) (Video)
142. [Ductile to Brittle Transition](https://invisiblenetwork.ai/learn/nptel/113102080/bb835b98a66e) (Video)
143. [Enhancing Fracture Resistance](https://invisiblenetwork.ai/learn/nptel/113102080/8b9e81045a50) (Video)
144. [Toughening of Glass: Tempering](https://invisiblenetwork.ai/learn/nptel/113102080/fd63aa690c98) (Video)
145. [Toughening of Glass: Ion-Exchange](https://invisiblenetwork.ai/learn/nptel/113102080/5cc4b7358d65) (Video)
146. [Fatigue](https://invisiblenetwork.ai/learn/nptel/113102080/8bc125b2aaa2) (Video)