Module 1
Crystallography: Crystal structural determination, crystallographic directions and planes, miller indices, packing of atoms in solids, atomic packing factor, co- ordination number- Amorphous structure, glass transition temperature — Effects of crystalline and amorphous structure on mechanical and optical properties — Mechanism of crystallization: Homogeneous and heterogeneous nuclei formation, dendritic growth and grain boundary irregularity, grain size effects on mechanical & optical properties – Changes within solid materials: Structural imperfections: Point defects – line defect: edge, screw dislocation, burgers vector, forest of dislocations, role of dislocation in the deformation of metals – Surface imperfections: role of surface defect on crack propagation etc – Mode of plastic deformation: mechanism of slip & twinning, dislocation climb & cross slip, dislocation sources, frank-read source – Diffusion in solids, fick’s laws, applications.
Crystallography: Crystal structural determination, crystallographic directions and planes, miller indices, packing of atoms in solids, atomic packing factor, co- ordination number- Amorphous structure, glass transition temperature — Effects of crystalline and amorphous structure on mechanical and optical properties — Mechanism of crystallization: Homogeneous and heterogeneous nuclei formation, dendritic growth and grain boundary irregularity, grain size effects on mechanical & optical properties – Changes within solid materials: Structural imperfections: Point defects – line defect: edge, screw dislocation, burgers vector, forest of dislocations, role of dislocation in the deformation of metals – Surface imperfections: role of surface defect on crack propagation etc – Mode of plastic deformation: mechanism of slip & twinning, dislocation climb & cross slip, dislocation sources, frank-read source – Diffusion in solids, fick’s laws, applications.
Module 2
Cold working, strain hardening, recovery, re-crystallization, grain growth, grain size and its effects on mechanical properties– Hot working, super plasticity – Reasons for alloying, phase transformation phase rules, single phase, multi phase equilibrium diagrams, solid solutions, inter metallic compounds – Equilibrium diagram reactions: monotectic, eutectic, eutectoid, peritectic, peritectoid — Polymorphism – Detailed discussion of Iron-Carbon diagram with microstructure changes in ferrite, austenite, cementite, graphite, pearlite, martensite, bainite.
Cold working, strain hardening, recovery, re-crystallization, grain growth, grain size and its effects on mechanical properties– Hot working, super plasticity – Reasons for alloying, phase transformation phase rules, single phase, multi phase equilibrium diagrams, solid solutions, inter metallic compounds – Equilibrium diagram reactions: monotectic, eutectic, eutectoid, peritectic, peritectoid — Polymorphism – Detailed discussion of Iron-Carbon diagram with microstructure changes in ferrite, austenite, cementite, graphite, pearlite, martensite, bainite.
Module 3
Definition and aims of heat treatment- Annealing, spheroidizing, normalizing, hardening, tempering, austermpering, martempering with microstructure changes — Surface treatment: Diffusion methods: carburizing, nitriding, cyaniding — Thermal methods: flame hardening, induction hardening – Deposition methods: hot dipping and coating, impregnation, metal spraying, metal cladding – Various strengthen mechanisms in metals: work hardening, grain boundary hardening, grain size reduction, solid solution hardening, dispersion hardening.
Definition and aims of heat treatment- Annealing, spheroidizing, normalizing, hardening, tempering, austermpering, martempering with microstructure changes — Surface treatment: Diffusion methods: carburizing, nitriding, cyaniding — Thermal methods: flame hardening, induction hardening – Deposition methods: hot dipping and coating, impregnation, metal spraying, metal cladding – Various strengthen mechanisms in metals: work hardening, grain boundary hardening, grain size reduction, solid solution hardening, dispersion hardening.
Module 4
Alloy steels: Effects of alloying elements on: dislocation movement, polymorphic transformation temperature, formation and stability of carbides, grain growth, displacement of the eutectoid point, retardation of the transformation rates, improvement in corrosion resistance, mechanical properties — Nickel steels, chromium steels, etc – Effects on steels, containing molybdenum, vanadium, tungsten, cobalt, silicon, copper and lead – high speed steels – - Cast irons: classifications, gray, white, malleable and spheroidal graphite cast iron, composition, microstructure, properties and applications – Principal non ferrous alloys like aluminum, beryllium, copper, magnesium, nickel, study of composition, microstructure, properties and applications- Reference shall be made to the phase diagrams whenever necessary.
Alloy steels: Effects of alloying elements on: dislocation movement, polymorphic transformation temperature, formation and stability of carbides, grain growth, displacement of the eutectoid point, retardation of the transformation rates, improvement in corrosion resistance, mechanical properties — Nickel steels, chromium steels, etc – Effects on steels, containing molybdenum, vanadium, tungsten, cobalt, silicon, copper and lead – high speed steels – - Cast irons: classifications, gray, white, malleable and spheroidal graphite cast iron, composition, microstructure, properties and applications – Principal non ferrous alloys like aluminum, beryllium, copper, magnesium, nickel, study of composition, microstructure, properties and applications- Reference shall be made to the phase diagrams whenever necessary.
Module 5
Fracture: Bonding forces and energies, cohesive strength of metals – Griffith theory –- Crack initiation, growth and crack arrest – Effect of plastic deformation on crack propagation – Factors leading to crack propagation – Cleavage, intercrystalline, brittle, ductile fracture — Influence of slip on fracture – Effect of impact loading on ductile material and its application in forging etc.– Fatigue: stress cycles – Effects of stress concentration, size effect, surface texture on fatigue – Corrosion and thermal fatigue – Mechanism of fatigue failure — Creep: Creep curves – Structural change – Mechanism of creep deformation.
Fracture: Bonding forces and energies, cohesive strength of metals – Griffith theory –- Crack initiation, growth and crack arrest – Effect of plastic deformation on crack propagation – Factors leading to crack propagation – Cleavage, intercrystalline, brittle, ductile fracture — Influence of slip on fracture – Effect of impact loading on ductile material and its application in forging etc.– Fatigue: stress cycles – Effects of stress concentration, size effect, surface texture on fatigue – Corrosion and thermal fatigue – Mechanism of fatigue failure — Creep: Creep curves – Structural change – Mechanism of creep deformation.
References
Avner S.H. – Introduction to Physical Metallurgy – McGraw Hill.
Callister William. D. – Material Science and Engineering. – John Wiley.
Guy A.G. – Essentials of material science. – McGraw Hill.
Dieter George E. – Mechanical Metallurgy. – McGraw Hill.
Higgins R.A. – Engineering Metallurgy part-I. – ELBS.
Mans Chandra – Science of Engineering Materials Vol. 1, 2, 3. – Macmillan.
Reed Hill E. Robert – Physical Metallurgy Principles. – East West Press.
Richards C.W. – Engineering Material Science.
Van Vlack – Elements of material Science. Addison – Wesley.
www. msm. com. ac. uk / online teaching.
Callister William. D. – Material Science and Engineering. – John Wiley.
Guy A.G. – Essentials of material science. – McGraw Hill.
Dieter George E. – Mechanical Metallurgy. – McGraw Hill.
Higgins R.A. – Engineering Metallurgy part-I. – ELBS.
Mans Chandra – Science of Engineering Materials Vol. 1, 2, 3. – Macmillan.
Reed Hill E. Robert – Physical Metallurgy Principles. – East West Press.
Richards C.W. – Engineering Material Science.
Van Vlack – Elements of material Science. Addison – Wesley.
www. msm. com. ac. uk / online teaching.
mg university b.tech syllabus s3 mechanical engg