WITH EFFECT FROM THE ACADEMIC YEAR 2010 - 2011

ME 201

METALLURGY AND MATERIAL SCIENCE

Instruction                                                                                              4 Periods per week

Duration of University Examination                                                      3 Hours

University Examination                                                                        75 Marks

Sessional                                                                                               25 Marks

UNIT – I

Imperfections in crystals, Dislocation in crystals, Types of dislocations, Critical resolved shear stress, Effect of slip and twinning on plastic deformation, Jogs and its effect on yield phenomenon, Hall-Petch equation, Orange peel effect, cold and hot working, strain Hadening and Bauchinger effect. Recovery, Recrystallisation, Grain growth and its effect on mechanical properties of metals.

Fracture: Types of fracture in metals, modes of fracture, Griffith theory of brittle fracture, Crack propagation, ductile fracture, Cottrell’s equation, Fracture under combined stress.

UNIT – II

Fatigue:  S-N curve, Structure of fatigue fracture specimen.  Fatigue crack propagation, Effect of metallurgical variables on fatigue of metal, Low cycle fatigue, Cumulative fatigue and fatigue damage, Experimental determination of fatigue strength (RR-Moore Test), Factors to be considered for the improvement of the fatigue life.

Creep:  Creep strength, Creep Curve, Creep deformation mechanisms, Creep Test, Differences between creep curve and stress rupture curve.

Diffusion:  Fick’s law of diffusion, Application of diffusion theory in Mechanical Engineering.

UNIT-III

Structure of Alloys:  Construction and interpretation of Thermal equilibrium diagram of binary nonferrous alloys, study of Eutectic, Eutectoid, peritectic, Peritectoid reactions.  Iron-Iron Carbide Equilibrium diagram, Construction and interpretation.  Types of Plain Carbon Steels, Cast Iron and their properties and Characteristics.

UNIT-IV

Heat Treatment:  Annealing, Normalising, Hardening, Tempering, Construction and interpretation of T.T.T. Curve.  Austempering and Martempering.  Case Hardenig:  Carburising, Nitriding, Carbo-nitriding, Flame Hardening, Induction Hardening.  Brief introduction of Age Hardening.

UNIT-V

Introduction to Extractive Metallurgy, Method of Production of pig iron by blast furnace, Cast Iron by Cupola furnace, Method of production of Copper and Aluminium.  Method of production of steel by Bessemer Convertor, L.D. Process, Electric Arc process.  Modern steel making process by Electric slag refining and Corex.

Alloy Steels: Effects of alloying elements like Nickel, Chromium, Manganese, Silicon and Tungsten, Titanium.  Study about Stainless steels, HSS, Maraging steels, Brass, Bronze, Muntz Metal, Invar, Duralumin and Ti Alloy (Ti-6A1-4V) – their composition and properties.

Suggested Reading:

1. V. Raghavan, Material Science and Engineering,  Prentice Hall of India Ltd., 4^th Edition, 1994.
2. S.H.. Avner, Introduction to Physical Metallurgy, McGraw Hill Publication Co.Ltd., 2^nd Edition, 1974.
3. S.P. Nayak, Engineering Metallurgy and Material Science, Charoter Publishing House, 6^th Edition, 1995.
4. E. Dieter, Mechanical Metallurgy, Metric Editions, McGraw Hill Book Company.