பாடநெறி விவரங்கள்

UNIT 1 FUNDAMENTALS OF MATERIALS- Crystallography: Basics, Atomic radius and Atomic packing factor of BCC, FCC & HCP, Miller’s indices, Allotropy, Solid solutions and intermetallic compounds. Atomic Diffusion: Laws of diffusion, Factors affecting diffusion. Phase diagrams: Solidification of metals, Phase rules, Construction of phase diagram, Isomorphous diagram, Eutectic diagram showing partial solid solubility, Peritectic system. 

UNIT 2 FERROUS AND NON-FERROUS ALLOYS- Ferrous alloys: Cooling curve of pure iron, Fe–Fe3C equilibrium diagram, Critical points in Fe–Fe3C equilibrium diagrams, Classification of ferrous alloys, Influence of alloying elements, Designation systems, Types of steels and cast iron, Typical compositions, properties and applications of ferrous alloys. Non-ferrous alloys: Typical compositions, properties and applications of Aluminium and its alloys, Copper & its alloys, Ti & its alloys, and Nickel & its alloys. 

UNIT 3 STRENGTHENING PROCESSES- Heat treatment of steel: TTT diagram and CCT diagram. Heat treatment processes: Annealing, Normalizing, Tempering and Quenching, Jominy quency test for hardenability. Case hardening: Carburizing, Nitriding, Cyaniding, Carbonitriding, Flame hardening and Induction hardening. Others: Dispersion strengthening & Precipitation hardening 

UNIT 4 FAILURE OF MATERIALS AND TESTING- Tensile testing: Significance, Universal testing machine, Stress–strain curve for ductile & brittle material, Results. Hardness Testing: Significance, Rockwell harness test, Brinell’s hardness test and Vicker’s hardness test, Results. Impact testing – Significance, Charpy impact test and Izod impact test, Results. Failure of materials: Defects in materials, Deformation mechanisms, Failure mechanisms and influencing factors of ductile and brittle failures, fatigue failure, creep failure and impact failure. 

UNIT 5 MATERIAL CHARACTERIZATION AND SELECTION - X-ray diffraction (XRD): Bragg’s law of diffraction, Powder, rotating crystal and Laue methods to determine the crystal structure. Optical microscopy: Image formation techniques, Construction, Sample preparation and Applications of optical microscopes. Scanning electron microscopy (SEM): Image formation techniques, Construction, Sample preparation and Applications of SEM. Transmission electron microscopy (TEM): Image formation techniques, Construction, Sample preparation and Applications of TEM. Materials selection: Engineering materials and their properties, Materials selection charts, Material selection strategy, Factors affecting materials selection, Case studies.