Materials Science

Materials Science and Engineering (EML3234 and EML4930)

• Bonding
• Crystal structure
• Miller indices
• Point, line and volume defects
• Mechanical properties
• Stress
• Strain
• Plastic deformation
• Hardness
• Fracture (ductile vs. brittle)
• Toughness
• Fatigue
• Creep
• Phase equilibria (phase diagrams)
• Electronic properties
• Metals
• Steel, and steel heat treatments
• Alloys
• Semiconductors
• Ceramics
• Polymers
• Composites
• Corrosion
• Processing
• Diffusion
• Microscopy
• Xray diffraction

Mechanical Metallurgy (EML4225/5226)

• Stress and strain relationships for elastic behavior:
  • State of stress in two/three dimensions
  • Mohr's circle of stress and strain - two/three dimensions
  • Stress tensor
  • Hydrostatic and deviator components of stress
  • Calculation of stresses from elastic strains
  • Anisotropy of elastic behavior
• Elements of the theory of plasticity:
  • The flow curve
  • Engineering stress-strain
  • True stress and true strain
  • Instability in tension
  • Yield criteria
  • Combined stress tests
  • Effect of strain rate on flow properties
  • Effect of temperature on flow properties
• Plastic deformation of single crystal:
  • Concepts of crystal geometry
  • Lattice defects deformation by slip
  • Slip by dislocation movement
  • Critical resolved shear stress for slip
  • Deformation by twinning
  • Stacking faults
• Dislocation theory:
  • Burgers vector and the dislocation loop
  • Dislocations in the FCC and BCC lattice
  • Stress fields and energies of dislocations
  • Forces between dislocations
  • Dislocation climb
  • Intersection of dislocations
  • Jogs and dislocation sources
• Strengthening mechanisms:
  • Grain boundaries and deformation
  • Solid-solution strengthening
  • Particle strengthening
  • Strengthening due to point defects
  • Strain hardening
  • Prefered orientation (texture)
• Fracture:
  • Types of fracture in metals
  • Griffith theory of brittle fracture
  • Dislocation theories of brittle fracture
  • Ductile fracture