Courses » Defects in Materials

Defects in Materials

About the course:
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.

 Intended audience:
 Undergraduate, post graduate and graduate students of Metallurgical and Materials, Physics and Chemistry.


Industries that will recognize this course:

All Metallurgical, metal forming and automotive industries will be interested in this course.

About the Instructor:

Dr. Sundararaman M is Visiting Professor in the department of Metallurgical and Materials Engineering, IIT Madras since July 2014. He was senior scientist at Metallurgy Division, Bhabha atomic Research Centre, Mumbai till 2011. For a brief period of 3 and ½ years, he was professor and dean , School of Engineering Sciences & Technology, University of Hyderabad. His research interests are phase transformations in materials, defect characterization , structure property correlation  and  electrons.

Course Layout

Module 1  : Brief introduction to perfect crystals including lattice geometry, point group, space group and crystal structures
Module 2  : Defect classification in crystalline systems - Point defects in metallic ionic and covalent crystals equilibrium and non-equilibrium defects dislocations, continuum and atomistic theory, dislocations in different lattices,  dislocation reactions, interaction and multiplication of dislocations, dislocation sources, glide, cross slip, climb - Stacking faults, twinning - Grain boundaries, small angle and high angle boundaries, special boundaries, ledges, inter-phase boundaries.
Module 3  : Defect interactions - interaction between point defects and dislocations, interaction between precipitates and dislocations.
 Module 4 : Brief overview of role of defects in controlling optical, electrical, magnetic, semiconducting and superconducting properties of materials.
 Module 5  : Brief introduction to the role of dislocations in static and dynamic strain ageing, work hardening, strength of alloys, deformation of poly-crystals and fracture.
Module 6  : Brief introduction to techniques for characterization of defects.

Certification exam:

Course url:https://onlinecourses.nptel.ac.in/noc17_mm03
Course duration : 12 weeks
Start date and end date of course:23 January 2017- 15 April 2017
Dates of exams:23 April, 2017
Time of exam: Shift 1: 9am-12noon; Shift 2: 2pm-5pm
The exam is optional for a fee. Exams will be on 23 April 2017.

Any one shift can be chosen to write the exam for a course.
Registration url: Announcements will be made when the registration form is open for registrations.
The online registration form has to be filled and the certification exam fee needs to be paid. More details will be made available when the exam registration form is published.

  • Final score will be calculated as : 25% assignment score + 75% final exam score
  • 25% assignment score is calculated as 25% of average of Best 8 out of 12 assignments
  • Certificate will be given to those who register and write the exam and score greater than or equal to 40% final score. Certificate will have your name, photograph and the score in the final exam with the breakup. It will have the logos of NPTEL and IIT Madras. It will be e-verifiable at  nptel.ac.in/noc.