Fundamental concepts of unit cell space lattice, Bravaias space lattices, unit cells for cubic structure & HCP, study of stacking of layers of atoms in cubic structure & HCP, calculations of radius, Coordination Number and Atomic Packing Factor for different cubic structures. Crystal imperfections-point, line, surface & volume defects. Diffusion, Diffusion Mechanism, Fick’s laws of diffusion.
Concepts of stress & strain, tensile properties, true stress & strain, Hardness, Rockwell, Vickess & Brinell Hardness testing. Plastic deformation, slip & twinning.
types, stages in cup & cone fracture, Griffith’s criterion. Fatigue: fatigue tests, S-N curves, Factors affecting fatigue life and protection methods. Creep: The creep curves, Mechanisms of creep. Creep-resistant materials.
Solid solutions, Types, Rules of governing the formation of solids solutions. Phase diagrams: Basic terms, phase rule, cooling curves, construction of phase diagrams, interpretation of equilibriums diagrams, Types of phase diagrams. Lever rule.
Iron carbon equilibrium Diagram, phases in the Fe–C system, Invariant reactions, critical temperatures, Microstructure of slowly cooled steels, effect of alloying elements on the Fe-C diagram, ferrite & Austenite stabilizers. The TTT diagram, drawing of TTT diagram, TTT diagram for hypo-& hyper-eutectoid steels, effect of alloying elements, CCT diagram.
Annealing, and its types, normalizing, hardening, tempering, martemering, austempering, surface hardening like case hardening, carburizing, cyaniding, nitriding Induction hardening, hardenabilty, Jominy end-quench test, Age hardening of Al & Cu alloys.
Properties, composition and uses of low carbon, mild medium & high carbon steels. Steel designation & AISI –SAE designation. Cast irons, gray CI, white CI, malleable CI, SC iron. Microstructures of cast iron. The light alloys, Al & Mg & Titanium alloys. Copper & its alloys: brasses & bronzes.
Galvanic Cell, The Electrode Potentials, Polarization, Passivation, General methods of Corrosion Prevention, Cathodic Protection, Coatings, Corrosion Prevention by Alloying, Stress Corrosion Cracking.