Syllabus

Dislocation Theory: Introduction, Theoretical shear strength of crystal, Point Defect, Line Defect, Edge, Screw, Mixed dislocation, Burgers vector, Deformation by slip, Dislocations in FCC and BCC crystals, Dislocation reaction, Cross slip and climb of dislocations, Dislocation sources and dislocation multiplication, Dislocation dissociation, Dislocations Locks, Dislocation pile-ups
Stacking faults, Deformation by twinning
Theory of elasticity and plasticity: Introduction, Atomistic basis of elasticity and plasticity, Yielding Criteria for crystalline material, Engineering and True stress-true strain curve, Strength, ductility and Toughness, Types of fracture, Strain hardening coefficient, Instability in tension, Effect of strain rate and temperature on flow properties
Strengthening mechanism: Strengthening from grain boundaries, Low angle grain boundaries, Strain hardening, Bauschinger’s effect, Cottrell atmosphere and Yield Point Phenomenon, Solid solution strengthening, Precipitation hardening, and Dispersion strengthening

To know about crystal imperfections present in metallic systems

Analyze the impact of defects on the mechanical behavior of crystalline materials.

Understand the mechanisms of plastic deformation in different crystal systems

Understand the various mechanisms involved in the strengthening of materials

1-Apply dislocation theory to analyze material behavior under different loading conditions in engineering applications.
2-Use dislocation concepts to predict the failure and optimize the mechanical properties of metals and alloys.
3-Be able to interpret stress-strain relationships to assess material performance, including strength and ductility, for use in structural components.
4-Apply the concepts of elasticity and plasticity to understand material deformation behavior.
5-Implement various strengthening mechanisms to enhance material performance in industrial applications.

G.E. Dieter, Mechanical Metallurgy, McGraw – Hill Publication (1988)

R.W. Hertzberg, Deformation and Fracture Mechanics of Engineering Materials, John Wiley & Sons Pub.

R E Reed, Physical Metallurgy Principals, Hill Litton Education Publication (2004)

W. Soboyejo, Mechanical Properties of Engineering Materials, Marcel Dekker Publication (2003)