grain boundary


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Related to grain boundary: Grain growth, Twin boundary

grain boundary

[′grān ‚bau̇n·drē]
(solid-state physics)
An interface between individual crystals in a polycrystalline solid.
References in periodicals archive ?
Machinability: The presence of grain boundary carbides/pearlite increases tool wear.
Besides, rapid diffusion of internal atom and high mobility of grain boundary under elevated temperature can accelerate the growth of DRX grains.
When sliding motion occurs, surface dislocations are blocked in their movement by a grain boundary and they accumulate at the grain boundary which results in strain-hardening of the surface layers.
In general, grain boundary pinning by fine dispersion of precipitates is effective to suppress abnormal grain growth.
FEI~s four-sensor system includes symmetrical 360 degrees, so the grain boundary analysis can be carried out regardless of the orientation of the grain boundary.
The relationship between diffusion coefficient (D) and activity of the grain boundary (E) is given in (1), and the relationship between D and temperature (T) is given in (2) [6]:
Since VMM is an element-based method and there are no special interface elements involved, the grain boundaries are represented by choosing elements to one side of the grain boundary with the crack normals assigned to be parallel to the grain boundary normal.
The editors have organized the contributions that make up the main body of the text in thirteen chapters devoted to the analysis of local and global segregation occurring in grain boundary diffusion, unresolved issues in the grain boundary diffusion of severely deformed metals, the grain boundary design of bulk nanomaterials for advanced properties, and other related subjects.
In being able to see single atoms and analyse nanoscale regions of material using the electron microscope, the researchers can see the grain boundary that is ahead of the proceeding corrosion path.
The US patent titled 'Enhancing Critical Current Density of Cuprate Superconductors' reveals a method for improving the critical current density in superconductors by restricting the movement of Abrikosov (A) vortices, Josephson (J) vortices, or Abrikosov-Josephson (A-J) vortices using the half integer vortices associated with the d-wave symmetry present in the grain boundary.
One can try to gain sufficient understanding of grain boundary phenomena so as to control them.