MN532 : Mechanical Behavior
of Materials
Prof. S. N. Basu
Rm. 218, 730 Commonwealth Ave.
Ph. 353-6728
e-mail: basu@bu.edu
Optional text:
Elements of X-ray Diffraction, B. D. Cullity.
Introduction to Dislocations, D. Hull and D. J. Bacon.
Mechanical Behavior of Materials, T. H. Courtney.
Grading:
Midterm exam. - 40%
Homework - 20%
Second exam. - 40%
SYLLABUS
| A) |
Structure and X-ray diffraction |
4 weeks |
1) Bravais lattice, unit cell
2) Miller indices, stereographic projections
3) Close packed structures
4) Paulings rules for ionic materials
5) Structure of ceramic materials
6) Braggs law, structure factor
7) Single crystal and powder diffraction patterns
8) Determination of grain size, texture and lattice parameters
| B) |
Dislocations and plastic deformation |
4 weeks |
1) Burgers vector, CRSS, Schmid factor
2) Energy of dislocations
3) Forces on dislocations
4) Dislocation in FCC structure
5) Dislocations in other structures
6) Dislocation interaction
7) Dislocation density, Frank Reed source
| C) |
Strengthening of crystalline materials |
2 weeks |
1) Work hardening
2) Solid solution hardening
3) Precipitation hardening
4) Dispersed phase strengthening
1) Griffith cracks
2) Ductile fracture
3) Brittle fracture
4) Creep fracture
1) Nabarro-Herring and Coble creep
2) Ashby deformation maps