18AU33 Material Science and Metallurgy syllabus for AU

Crystal Structure:

BCC, FCC and HCP Structures, coordination number and atomic packing factors, crystal imperfections –point, line and surface imperfections. Atomic Diffusion: Phenomenon, Flick's laws of diffusion, factors affecting diffusion.

Mechanical Behaviour:

Stress-strain diagram for ductile and brittle materials, True stress and true strain, linear and non-linear elastic behaviour and properties, mechanical properties in plastic range, yield strength, offset yield strength, ductility, ultimate tensile strength, and toughness. Plastic deformation of single crystal by slip and twinning.

Fracture:

Type I, Type II and Type III.

Creep:

Description of the creep phenomenon with examples, three stages of creep, creep properties, stress relaxation.

Fatigue:

Types of fatigue loading with examples, Mechanism of fatigue, fatigue properties, fatigue testing and S-N diagram.

Solidification and Solid Solutions:

Mechanism of solidification, Homogenous and Heterogeneous nucleation, crystal growth, cast metal structures, solid solutions- types and rules governing the formation of solid solutions.

Phase Diagram:

Basic terms, phase rule, lever rule, cooling curves, construction and interpretation of different phase diagrams ( eutectic, eutectoid, peritectic and peritectoid)

Heat Treatment of Metals:

TTT curves, continuous cooling curves, annealing and its types. Normalizing, hardening, tempering, martempering, austempering, hardenability, surface hardening methods like carburizing, cyaniding, nitriding, flarne hardening and induction hardening, age hardening of Aluminium-copper alloys.

Ferrous Materials:

Properties, Composition and uses of Grey cast iron, malleable iron, S.G iron and steel.

Non Ferrous Metals:

Copper alloys-brasses and bronzes, Aluminum alloys-Al-Cu, Al-Si, Al-Zn alloys, composition, properties, advantages and disadvantages and applications.

Composite Materials:

Definition, classification, types of matrix materials & reinforcements, fundamentals of production of FRP' and MMC's advantages and application of composites.

Course Outcomes:

At the end of the course the student will be able to:

• Explain different crystal structures, mechanism of various types of failure, types of heat treatment processes and types and methods of manufacturing of composites.
• Draw stress strain diagram for various metals, TTT curves and Iron carbon diagrams
• Select various non-ferrous metals and alloys based on composition and properties for a given application.
• Interpret the phase diagrams.

Question paper pattern:

• The question paper will have ten full questions carrying equal marks.
• Each full question will be for 20 marks.
• There will be two full questions (with a maximum of four sub- questions) from each module.

Textbook/s

1 Foundations of Materials Science and Engineering Smith, McGraw Hill, 2009 3rd Edition

2 Materials Science Shackleford. & M. K. Muralidhara, Pearson Publication 2007.

Reference Books

3 An introduction to Metallurgy Alan Cottrell University Press India Oriental Longman Pvt. Ltd., 1974.

4 Materials Science and Engineering V. Raghavan, PHI 2002

5 Materials Science and Engineering William D. Callister Jr. John Wiley & Sons. Inc 5th Edition, 2001.