Engineering Materials

Materials Fundamentals: material classification, atomic structure, atomic bonding in solids, crystal structure, crystal systems, crystallographic directions, Miller-Bravais scheme, crystallographic planes, Polycrystalline Materials. Imperfections: point defects, dislocations, Burger vector, grain size, microscopic techniques.

Phase Diagrams: Solubility Limit, phases, microstructures, Gibbs phase rule, Equilibria, binary phase diagram, eutectic, eutectoid, peritectic reactions, Iron-Carbon phase diagram. Phase transformations in metals, kinetics of phase transformations, metastable, equilibrium states, Isothermal transformation (TTT) diagrams, CCT diagram, mechanical behavior of Iron-Carbon alloys.

Material Processing: Ferrous Alloys - classifications, Nonferrous Alloys - copper and aluminum alloys, forming, casting, Heat treatments: Annealing, Precipitation hardening, austempering, martempering, ausforming, surface hardening, hardenability.

Testing: Concepts of stress-strain, elastic properties, tensile properties, true stress-strain, elastic recovery and plastic deformation, hardness. Dislocations and Strengthening Mechanisms: Characteristics of dislocation, slip systems and slip in single crystal. plastic deformation in polycrystalline materials, twinning, strengthening by grain size reduction, strain hardening, recovery, recrystallization, grain growth.

Failure: Fracture - Fundamentals of Fracture, Ductile and brittle fracture, Impact Fracture Testing. Fatigue – Cyclic stress, S-N curve, crack initiation and propagation, fatigue life and improvement methods, Creep behavior, stress and temperature effects, alloys for high temperature.

Laboratory Experiments:

Metallography specimen preparation, Optical microscopy (micro structure evaluation of cast iron, carbon steel. stainless steel and alloy steels), Mechanical Characterization of materials- Tensile testing, Impact testing and Hardness testing, heat treatment of steels – annealing, normalizing, and quenching microstructure comparison.

Reference Books

Sidney H Avner, Introduction to Physical Metallurgy, McGraw Hill Education – 2nd edition, ISBN- 978-0074630068, 2017.
George E Dieter, Mechanical Metallurgy, McGraw Hill Education – 3rd edition, ISBN- 978-1259064791, 2017.
William D. Callister JR, David G. Rethwisch, Materials Science and Engineering - An Introduction, 10th edition, John Wiley & Sons, 2018.
R. Balasubramaniam, Callister's Materials Science and Engineering, Wiley – 2nd edition, ISBN - 978-8126541607, 2014.
William F Smith, Javad Hashemi, Ravi Prakash, Material Science and Engineering, McGraw Hill Education- 5th edition, ISBN-978-1259062759, 2017.
A.V.K. Suriyanarayana, Testing of metallic materials, BS Publications, ISBN- 978-8178001340, 2007.

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