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Burgers vector
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The Burgers vector, often denoted by b, is a vector that represents the magnitude and direction of the lattice distortion of dislocation in a crystal lattice.[1] The direction of the vector depends on the plane of dislocation, which is usually on the closest-packed plane of unit cell. The magnitude is usually represented by equation:
where a unit cell length of the crystal, ||b|| is the magnitude of Burgers vector and h, k, and l are the components of Burgers vector, b =
In edge dislocations, the Burgers vector and dislocation line are at right angles to one another. In screw dislocations, they are parallel.
The Burgers Vector is significant in determining the strength of a material. As it affects solute hardening, precipitation hardening and work hardening, all of which affect yield strength.
- ^ Callister, William D. Jr. "Fundamentals of Materials Science and Engineering." John Wiley & Sons, Inc. Danvers, MA. (2005)