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Defects in Materials

Defects in Materials. Instructor: Prof. Sundararaman M, Department of Metallurgical and Materials Engineering, IIT Madras. Defects play an important role in imparting properties to materials. It is also used to tailor the properties as well as in controlling the deformation behavior. Aim of this course is to give a brief introduction to the various types of defects and how their interaction can used to control the properties. (from nptel.ac.in)

Lecture 13 - Tensor

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Lecture 01 - Introduction

Lecture 02 - 1D Lattice

Lecture 03 - 2D Lattice

Lecture 04 - 3D Lattice: Generation of 3-Dimensional Lattice

Lecture 05 - 3D Lattice (cont.)

Lecture 06 - 3D Lattice (cont.)

Lecture 07 - 3D Crystals

Lecture 08 - Types of Point Defects

Lecture 09 - Vacancy Concentration Determination

Lecture 10 - Vacancy Concentration Determination (cont.)

Lecture 11 - Point Defect Interstitial

Lecture 12 - Transformation of Coordinates

Lecture 13 - Tensor

Lecture 14 - Tensor (cont.)

Lecture 15 - Strain

Lecture 16 - Stress

Lecture 17 - Description of Dislocation

Lecture 18 - Description of Dislocation (cont.)

Lecture 19 - Stress Field around Dislocation

Lecture 20 - Self Energy of Dislocation

Lecture 21 - Force on Dislocation

Lecture 22 - Forces between Dislocation

Lecture 23 - Chemical Force on Dislocation

Lecture 24 - Perfect Dislocation in FCC Structures

Lecture 25 - Intrinsic Stacking Faults in FCC

Lecture 26 - Extrinsic Faults and Thompson Tetrahedron in FCC

Lecture 27 - Dislocations in BCC and HCP

Lecture 28 - Dislocations in Ordered Alloys and Dislocation-Dislocation Interaction

Lecture 29 - Twinning

Lecture 30 - Twinning (cont.)

Lecture 31 - Martensitic Transformation

Lecture 32 - Martensitic Transformation (cont.)

Lecture 33 - Interfaces

Lecture 34 - Interfaces (cont.)

Lecture 35 - Defect Interaction and Strength