grain

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Related to Grain boundary: Grain growth, Twin boundary
See: character, disposition, frame, inclination, iota, modicum, scintilla

GRAIN, weight. The twenty-fourth part of a pennyweight.
     2. For scientific purposes the grain only is used, and sets of weights are constructed in decimal progression, from 10,000 grains downward to one hundredth of a grain.

GRAIN, corn. It signifies wheat, rye, barley, or other corn sown in the ground In Pennsylvania, a tenant for a certain term is entitled to the way- going crop. 5 inn. 289, 258; 2 Binn. 487; 2 Serg. & Rawle, 14.

References in periodicals archive ?
This volume collects 34 papers from a June 2010 conference discussing current work in grain boundary diffusion, grain boundary segregation, bulk diffusion, phase formation, and diffusion controlled processes.
However, techniques such as transmission electron microscopy (TEM) with electron energy loss (EELS) analysis [10] can be used to identify any cerium-chromium oxide phases formed at oxide grain boundary regions.
The matrix of the iron is 90% Si-rich ferrite, with a grain boundary network of 5-10% primary carbides and pearlite.
Among specific topics are high-pressure torsion for ring samples in different thicknesses, fabricating nanocrystalline copper by explosive dynamic loading, disorientations after severe plastic deformation and their effect on work hardening, microstructure evolution of pure nickel up to a high strain level during equal-channel angular pressing, producing bulk ultrafine grained steel through severe plastic deformation, cooperative grain boundary sliding and shear banding at high strains in ultrafine grained and nanocrystalline lead alloys, the distribution of mechanical properties by volume in titanium billets processed by twist extrusion, and the effects of high pressure torsion on magnetic properties of amorphous alloys.
For each it includes such information as grain boundary diffusion, pipe diffusion and surface diffusion for the pure element and likely compounds.
The higher nodule count minimizes grain boundary segregation of carbide-forming elements and reduces carbon flotation.
The Effect of Grain Boundary State on Deformation Process Development in Nanostructured Metals Produced by the Methods of Severe Plastic Deformation
Taking deformation and fracture in turn, he discusses such topics as creep behavior of materials, dislocation motion at elevated temperatures, creep of solid solution alloys, mechanisms of grain boundary sliding, the diffusional growth of creep cavities, nucleation and the growth of wedge-type microcracks, predicting creep rupture life, and environmental damage at high temperature.
But the authors cautioned that at this temperature, "it becomes imperative that the temperature in the heat treated parts be controlled precisely in order to avoid grain boundary melting.
Intended for mechanical and metallurgical engineers, this guide describes the three primary methods for strengthening superalloys, the microstructure of superalloy phases, and the compositional effects of refractory, grain boundary, reactive, oxide, and trace elements.
The proceedings of the November 2004 conference consists of 83 papers on nanotechnology, the simulation and modeling of new materials, interface and grain boundary structures, and environmental science applications.