15ME32 Materials Science syllabus for ME

Basics, Mechanical Behavior, Failure of Materials
Introduction to Crystal Structure – Coordination number, atomic packing factor, Simple Cubic, BCC, FCC and HCPStructures, Crystal imperfections – point, line, surface and volume imperfections, Atomic Diffusion: Phenomenon, Fick’slaws of diffusion;Factors affecting diffusion.
Mechanical Behavior:
Stress-strain diagrams showing ductile and brittle behavior of materials, Engineering and true strains, Linear and nonlinearelastic behavior and properties, Mechanical properties in plastic range. Stiffness, Yield strength, Offset Yieldstrength, Ductility, Ultimate Tensile strength, Toughness, Plastic deformation of single crystal by slip and twinning,Mechanisms of strengthening in metals
Fracture:

Type I, Type II and Type III,
Fatigue:
Types of fatigue loading with examples, Mechanism of fatigue, Fatigue properties, S-N diagram, Fatigue testing.
Creep:
Description of the phenomenon with examples, three stages of creep, creep properties, Stress relaxation.Concept of fracture toughness, numerical on diffusion, strain and stress relaxation

Alloys, Steels, SolidificationConcept of formation of alloys:
Types of alloys, solid solutions, factors affecting solid solubility (Hume Rothery rules),Binary phase diagrams: Eutectic, and Eutectoid systems, Lever rule, Substitutional and interstitial solid solutions,Intermediate phases, Gibbs phase rule Effect of non- equilibrium cooling, Coring and Homogenization Iron-Carbon(Cementite) diagram: description of phases, Effect of common alloying elements in steel, Common alloy steels, Stainlesssteel, Tool steel, Specifications of steels. Solidification: Mechanism of solidification, Homogenous and Heterogeneousnucleation, Crystal growth, Cast metal structures Solidification of Steels and Cast irons. Numerical on lever rule

Heat Treatment, Ferrous and Non-Ferrous Alloys
Heat treating of metals: Time-Temperature-Transformation (TTT) curves, Continuous Cooling Transformation (CCT)curves, Annealing: Recovery, Recrystallization and Grain growth, Types of annealing, Normalizing, Hardening,Tempering, Martempering, Austempering, Concept of hardenability, Factors affecting it hardenability, surface hardeningmethods: carburizing, cyaniding, nitriding, flame hardening and induction hardening, Age hardening of aluminum-copperalloys and PH steels. Ferrous materials: Properties, Compositions and uses of Grey cast iron, Malleable iron, SG iron andsteel,

Other Materials, Material SelectionCeramics:
Structure types and properties and applications of ceramics. Mechanical / Electrical behavior and processingof Ceramics.
Plastics:
Various types of polymers/plastics and their applications. Mechanical behaviors and processing of plastics,Failure of plastics.
Other materials:
Brief description of other materials such as optical and thermal materials Smart materials – fiber opticmaterials, piezo-electrics, shape memory alloys Shape Memory Alloys – Nitinol, superelasticity, Biological applications ofsmart materials - materials used as implants in human Body, Selection of Materials, Performance of materials in serviceResidual life assessment – use of non-destructive testing, Economics, Environment and Sustainability

Composite Materials
Composite materials - Definition, classification, types of matrix materials & reinforcements,Metal Matrix Composites(MMCs), Ceramic Matrix Composites (CMCs) and Polymer Matrix Composites (PMCs), Particulate-reinforced and fiberreinforcedcomposites, Fundamentals of production of composites, Processes for production of composites,Characterization of composites, Constitutive relations of composites, Determination of composite properties fromcomponent properties, Hybrid composites, Applications of composite materials, Numericals on determining propertiesof composites