Contacts : 3L Contact week/ semester = 12 minimum

Credits : 3

1. Introduction:

Material Science―its importance in engineering; Classification of Materials―metals, polymers, ceramics, composites; Advanced materials―semiconductors, smart materials, nano-materials; Review atomic structure, Atomic bonding in solids―bonding forces and energies; ionic/covalent/metallic bonding. 2

2. Crystal Structure:

Fundamental concepts; Unit cells; seven crystal systems; single crystal, polycrystalline and non-crystalline materials; Metallic crystal structures―FCC, atomic packingfactor, BCC & HCP structures. 2

3. Imperfections in Metals:

Point defects due to vacancy & impurities, alloys, solid solutions;Dislocations―linear defects, interfacial defects, grain boundaries. 2

4. Phase Diagrams:

Definition and basic concepts; solubility limit; Phase equilibria, Onecomponent phase diagram, binary phase diagram, interpretation of phase diagrams. 3

5. Iron-carbon System:

allotropy of iron, iron-iron carbide phase diagram, properties and uses of plain carbon steel. 2

6. Classification of Metals and Alloys-

compositions, general properties and uses:

6.1 Ferrous alloys:

Classification –low carbon steels, medium carbon steels, high carbon steels,

stainless steels, alloy steels, tool and die steel, cast irons.

6.2 Non-ferrous alloys:

Copper & Copper alloys; Aluminum alloys; Zinc alloys; Nickel alloys; Lead & Tin alloys; 6

7. Mechanical Properties of Materials:

Elastic properties of materials―tensile and compressive stress and strain, stress-strain behavior, modulus of elasticity (Young’s modulus), yield strength, tensile strength, plastic deformation, true stress and strain; Ductility; Resilience; Toughness,impact tests; Hardness- Brinell, Rockwell and Vickers hardness and their testing procedures, correlation between hardness and tensile strength; Fatigue strength;Effect of temperature on tensile strength & impact properties, creep failure. 6

8. Heat Treatment:

Definition and purposes; Heat treatment processes for steels―Hardening, structural change during heating and cooling, factors affecting hardening; Tempering; Austempering; Normalizing; Annealing―full annealing, spheroidising annealing, stress–relieving, recrystallisation annealing; Preciptation or Age Hardening of non-ferrous alloys. 4

9. Polymers & Elastomers:

Definition; How polymers are made- polymerization; Polymer molecular structures; Thermoplastics & Thermosets; Special characteristics like low sp. gravity, optical, electrical & thermal property, decorative color, easy formability, low corrosion etc; Uses of polymers and elastomers. 2

10. Ceramic Materials:

What is ceramics; common ceramic materials and their characteristics; How ceramics are made―sintering and vitrification process; Ceramic structures; Properties and applications. 2

11. Composite materials:

What is composites; Polymers matrix and their applications; Metal matrix and ceramic matrix composites and their applications; How composites are made. 2

12. Corrosion and Degradation of Engineering Materials:

Definition; Types of corrosion―uniform, pitting, crevice, galvanic, stress corrosion cracking and erosion; Corrosion control ― material selection, environment control, proper design. 2

13. Materials Selection Methodology:

Selection of material based on required properties, availability and cost of material, environmental issues. 1

De Callister Book.pdf