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Indian Institute of Technology Kanpur

Defects in Crystalline Solids (Part-I)

Indian Institute of Technology Kanpur and NPTEL via Swayam

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Overview

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 creepINTENDED AUDIENCE:Undergraduate Students and first year graduate students of following discipline: Materials Engineering, Mechanical Engineering, Metallurgical Engineering, Industrial Engineering, Electrical EngineeringPREREQUISITES: Under graduate level mathematics, thermodynamicsINDUSTRY SUPPORT: Manufacturing Companies, Iron and Steel companies, Automobile companies, Equipment manufacturers,

Syllabus

Week 1 : Introduction to Point defect, Defect structure, Energy andConcentration of Point defectWeek 2 : Intrinsic and Extrinsic defect, Defect reaction and its thermodynamics,Week 3 : Interstitial and Substitutional Diffusion,Week 4 : Fundamentals of dislocation, Dislocation model and Dislocation circuitWeek 5 : Stress and strain field around dislocation, Force and energy on dislocationWeek 6 : Image force, Dislocation motion, Slip system, Peierl Nabarro stress, Critical resolved shear stressWeek 7 : Glide, climb and Cross-slip to create steps, Dislocation intersectionWeek 8 : Strain and strain rate due to dislocation motion, Dislocation in FCC and BCC, Thompson's Tetrahedron

Taught by

Prof. Shashank Shekhar

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