Constitution of Alloys and Phase Diagrams
Constitution of alloys – Solid solutions, substitutional
and interstitial – phase diagrams, Isomorphous, eutectic,
eutectoid, peritectic and peritectoid reactions, iron – Iron
carbide equilibrium diagram. Classification of steel and
cast-iron microstructure, properties and application.
Activity: Study of phase diagrams and microstructures.
Heat treatment
Definition – Full annealing, stress relief, recrystallisation
and spheroidising – normalizing, hardening and tempering of
steel. Isothermal transformation diagrams – cooling curves
superimposed on I.T. diagram – continuous cooling
Transformation (CCT) diagram – Austempering, Martempering
– Hardenability, Jominy end quench test – case hardening,
carburizing, Nitriding, cyaniding, carbonitriding – Flame and
Induction hardening – Vacuum and Plasma hardening –
Thermo-mechanical treatments – elementary ideas on sintering.
Activity: Demonstration of heat treatment and
hardenability test.
Ferrous and Non-Ferrous Metals
Effect of alloying additions on steel (Mn, Si, Cr, Mo,
Ni, V, Ti & W) – stainless and tool steels – HSLA –
Maraging steels – Grey, white, malleable, spheroidal – alloy
cast irons, Copper and its alloys – Brass, Bronze and
Cupronickel – Aluminium and its alloys; Al-Cu –
precipitation strengthening treatment – Titanium alloys,
v
Mg-alloys, Ni-based super alloys – shape memory alloys –
Properties and Applications-overview of materials standards.
Activity: Alloy identification and material selection
exercise.
Non-Metallic Materials
Polymers – types of polymers, commodity and
engineering polymers – Properties and applications of PE,
PP, PS, PVC, PMMA, PET, PC, PA, ABS, PAI, PPO, PPS,
PEEK, PTFE, Thermoset polymers – Urea and Phenol
formaldehydes – Nylon, Engineering Ceramics – Properties
and applications of Al2O3, SiC, Si3N4, PSZ and SIALON
– intermetallics – Composites – Matrix and reinforcement
Materials – applications of Composites – Nano composites.
Activity: Classification of polymers, ceramics and
composites.
Mechanical Properties and Deformation Mechanisms
Mechanisms of plastic deformation, slip and twinning
– Types of fracture – fracture mechanics – Griffith’s theory
– Testing of materials under tension, compression and shear
loads – Hardness tests (Brinell, Vickers and Rockwell),
Micro and nano-hardness tests Impact test Izod and charpy,
fatigue and creep failure mechanisms.
Activity: Demonstration of tensile, hardness and
impact tests
Weightage
Continuous Assessment: 40% End Semester
Examinations: 60%
Assessment Methodology
Quiz (5%), Assignments (25%), Review of GATE/ESE
Questions, Internal Examinations (50%)