Material Science and Engineering (PCMET205) Syllabus

Introduction to material science: classification of engineering materials, structure of solids — metallic, ionic and covalent bonding, properties based on atomic bonding. Crystallography: SC, BCC, FCC, HCP structures, atomic packing factor, theoretical density. Miller indices: crystal plane and direction. Modes of plastic deformation: slip and twinning.

Crystal imperfections: point defects, line defects, surface defects, volume defects, edge and screw dislocations, Burgers vector, interaction between dislocations. Polishing and etching, metallographic characterisation (SEM, TEM, grain size determination). Wear, roughness, corrosion. Diffusion in solids: Fick's laws, mechanisms, applications in mechanical engineering.

Mechanical properties: tensile properties, hardness and hardness measurement, impact properties, fatigue, creep, DBTT, super plasticity. Types of steels — low, medium and high carbon steels, stainless steels, alloy steels and their applications. Properties and applications of composites, super-alloys, intermetallics (stoichiometric and non-stoichiometric compounds), maraging steel, titanium. Ceramics: structures, applications.

Phase diagrams: need of alloying, classification of alloys, Hume-Rothery's rule, equilibrium diagrams of common binary systems — isomorphous (Cu-Ni), eutectic (Pb-Sn), lever rule, Gibb's phase rule. Detailed discussion of the Iron-Carbon equilibrium diagram with microstructure and properties. Heat treatment: TTT and CCT diagrams, tempering, hardenability, Jominy end quench test, surface hardening methods.