Syllabus Metallurgy and Materials Science - [ME25C08] 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. (Chapters - 2, 3) 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. (Chapters - 4, 5) 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, Mg-alloys, Ni-based super alloys - shape memory alloys - Properties and Applications-overview of materials standards.(Chapters - 6, 7) 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. (Chapter - 8) 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 lzod and charpy, fatigue and creep failure mechanisms. (Chapters - 9, 10) Activity : Demonstration of tensile, hardness and impact tests.
