Syllabus - Materials Technology (AU303)

Automobile Engineering

Materials Technology (AU303)

III

Solidification of metals

Crystallisation, Crystal and amorphous , different types of bonds in different metals, Crystallography. Stability and metastability of metals. Different mechanical properties of metals and other engineering materials like strength, hardness, elasticity, plasticity, Malleability, Ductility, Creep, Fatigue etc. Introduction to industrial metals, steels and prevailing manufacturing methods by manufacturers.

Cooling curves

Isomorphous, Utectic, Eutectoid , Eutectoid solid solution, Peritectic and other phase diagrams, Alloying , Characteristics of alloying elements, Iron – Carbon phase diagram, T-T-T diagrams, Types of Cast Iron. Types of Stainless Steels, Elastic, anelastic and Viscoelastic behaviour.

Heat treatment of metals

Based on phase diagram and T-T-T-Diagram the heat treatment of various metals, Bulk heat treatments, surface heat treatments,Case carburising, Types of Anealing, Normalising,Spherodising, Phase Transformations like Parlite, Cementite, Austenite, Troostite,Bainite,Hard and soft Martensite etc. Laser hardening, Cyniding, Boriding, Nitriding, Flame hardening, Ion implantation, Etc. Heat treatment cycles. Metallographic studies, Optical Microscope, Electron Microscope.

Destructive and non-destructive testing methods

Tensile test, Compression test, shear test, bend test, Different types of Hardness tests, Impact tests, Fatigue tests, Hardenability test. Fracture analysis, NDT Methods. Different properties of Steels, Aluminium and it’s alloys, Copper and it’s alloys, Manganese and it’s alloys, Chromium and it’s alloys, Nickel and it’s alloys.

Chemical Analysis of different alloying elements in commercial metals

C, Fe, Cr, Ni, Mn, Mg, S, P, Co, Mo, Etc. Different chemical reagents, Equipments , Volumetric and Gravimetric analysis, Spot test, Colorimetric methods, Optical and spectrophotometric analysis.

Practicals

  • Metallographic studies

    Study of Optical microscope, Optically flat surface preparation, etching reagents, Grain size- ASME no., micro structures, Image analysis, Standard specimen

  • Carbon, sulphur, Phosphorus determination

    Strauhlin’s apparatus, Eggert’s Method in different samples

  • Hardness and Hardenability test

    Jeremy Cony test. Soft and hard Martensite

  • Different heat treatment cycles using electric furnace [ Programmable preferred ]

    Annealing, Case carburising, Normalising, etc.

  • Gravimetric / Volumetric - chemical analysis of alloying elements like, Cr, Ni, Mn, Si etc.

  • Study of different instrumental method of analysis, spectrophotometers, Differential Scanning calorimeter

  • Spot test for quick assessment of alloying elements like Mn, Cr, Ni, etc.

  • Experiments / study of Non Destructive Methods

    Ultrasonic test, Magnetic particle inspection, Dye penetration test, Eddy current test, Radiography test

  • Cupping test / formability test for sheet metal

Reference Books

  • V. Raghwan, Material Science

  • G.E.Dieter, MechanicalMetallurgy

  • P Chalmers, Physical Metallurgy

  • R. C.Rollason, Metallurgy for mechanical engineers