19-11-2012, 02:47 PM
MATERIAL SCIENCE and METALLURGY
PART – A
UNIT 1:
Structure of crystalline solids: 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.
7 Hours
UNIT 2:
Concepts of stress & strain, tensile properties, true stress & strain, Hardness, Rockwell, Vickess & Brinell Hardness testing.Plastic deformation, slip & twinning.
6 Hours
UNIT 3:
Fracture: 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.
7 Hours
UNIT 4:
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. 6 Hours
PART – B
UNIT 5:
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.
7 Hours
UNIT 6:
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.
6 Hours
UNIT 7:
Engineering 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.
7 Hours
UNIT 8:
Corrosion & Its Prevention: Galvanic Cell, The Electrode Potentials, Polarization, Passivation, General methods of Corrosion Prevention, Cathodic Protection, Coatings, Corrosion Prevention by Alloying, Stress Corrosion Cracking.
6hrs
Text Books:
1. “Materials Science & Engineering- An Introduction”, William D.Callister Jr. Wiley India Pvt. Ltd. 6th Edition, 2006, New Delhi.
2. “Essentials of Materials For Science And Engineering”, Donald R. Askeland, Pradeep P.Phule Thomson-Engineering, 2006.
Reference Books:
1. “Introduction to Material Science for Engineering”, 6th edition James F. Shackel ford. Pearson, Prentice Hall, New Jersy, 2006.
2. “Physical Metallurgy, Principles & Practices”, V Raghavan.PHI 2nd Edition 2006, New Delhi.
3. “Foundation of Material Science and Engineering”, Smith, 3rd Edition McGraw Hill, 1997.
Scheme of Examination:
One Question to be set from each chapter. Students have to answer any FIVE full questions out of EIGHT questions, choosing at least 2 questions from part A and 2 questions from part B.