Term
|
Definition
| the direction and distance that a dislocation moves in each step, aka slip vector |
|
|
Term
| Critical Resolved Shear Stress |
|
Definition
| the shear stress required to cause a dislocation to move and cause slip |
|
|
Term
|
Definition
| a change in the slip system of a dislocation |
|
|
Term
|
Definition
| a line imperfection in a crystalline material, movement of dislocations helps explain how a metallic material deforms, interference with the movement of these helps explain how metallic materials are strengthened |
|
|
Term
|
Definition
| dislocation that is made up of an extra "half plane" of atoms, burgers vector is perpendicular to dislocation line |
|
|
Term
|
Definition
| deformation that is fully recovered when the stress causing it is removed, results from the bonds stretching |
|
|
Term
|
Definition
| a pair of pointe defect produced when an ion moves to create an interstitial site leaving behind a vacancy |
|
|
Term
|
Definition
| a surface defect representing the boundary between two grains, the crystal has a different oriention on either side of the grain |
|
|
Term
|
Definition
| point defect produced when an atom is placed into the crystal at a site that is not normally a lattice point |
|
|
Term
|
Definition
| defects such as dislocations in which atoms or ions are missing in a row (1-D) |
|
|
Term
|
Definition
| a dislocation that contains partly edge components and partly screw components |
|
|
Term
|
Definition
| the shear stress, which depends on the Burgers vector and the interplanar spacing , required to cause a dislocation to move |
|
|
Term
|
Definition
| permanent deformation of a material |
|
|
Term
|
Definition
| imperfections such as vacancies that are located typically at one or a few sites in a crystal. |
|
|
Term
|
Definition
| the relationship between shear stress , the applied stress, and the orientation of the slip system |
|
|
Term
|
Definition
| a point defect ionically bonded materials, a stoichiometric number of cation and anion vacancies |
|
|
Term
|
Definition
| a dislocation produced by skewing a crystal so that one atomic plane produces a spiral ramp about dislocations |
|
|
Term
|
Definition
| deformation of a metallic material by movement of dislocations through the crystal |
|
|
Term
|
Definition
| direction in the crystal in which the dislocation moves |
|
|
Term
|
Definition
| the plane swept out by the dislocation line during slip, normally the slip plane is a close packed plane if one exists in the crystal structure |
|
|
Term
|
Definition
| combination of a slip direction and slip plane |
|
|
Term
| Small Angle Grain Boundary |
|
Definition
| surface or planar defect made up of an array of dislocations causing a small misorientation of the crystal across the surface of the imperfection |
|
|
Term
|
Definition
| a surface defect in an FCC materal caused by the improper stacking sequence of close-packed planes |
|
|
Term
|
Definition
| a point defect produced when an atom is removed from a regular lattice point and replaced with a different atom usually having a different size |
|
|
Term
|
Definition
| imperfections such as grain boundaries that form a 2D plane within the crystal |
|
|
Term
|
Definition
| small angle grain boundary composed of an array of edge dislocations |
|
|
Term
|
Definition
| a surface defect across which there is a mirror image misorientation of the crystal structure |
|
|
Term
|
Definition
| small angle grain boudnary made up of an array of screw dislocations |
|
|
Term
|
Definition
| point defect where an atom is missing from its regular cyrstallographic site |
|
|
