Grain

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Related to Grain boundary: Grain growth, Twin boundary

Grain

A unit of weight equivalent to one 7,000th of one pound.
References in periodicals archive ?
Matrix Structure: A minimal amount of retained pearlite and a minimal grain boundary carbide network are required.
First, in some coarse-grain systems like half-Heusler compound, where the electrical conductivity is underlain by the number of carrier more than the mobility, the grain boundary can scatter phonon more than electrons when the grain size is in a proper range [9].
Relationship between grain boundary curvature and grain size.
3](Zr,X), which inhibits grain boundary motion, is included, it appears that this alloy in the highest strength condition may represent a metastable equilibrium between six phases.
The kinetics of grain boundary nucleated reactions.
Among these are the motion of grain boundary systems with triple and quadruple junctions; the effect of grain boundary faceting on grain boundary motion; grain growth in systems of two and three dimensions; and the influence of grain boundary junctions on grain growth kinetics, on the evolution of grain microstructure, and on the stability of fine grained and nanocrystalline materials.
Li, "Electron work function at grain boundary and the corrosion behaviour of nanocrystalline metallic materials", Mater Res Soc Symp.
Redistribution of the secondary phases via grain boundary sliding and solution-precipitation may serve as the creep mechanism.
Conserving Heavy Rare Earths Through Effective Utilization of Grain Boundary * Shin-Etsu Chemical Co.
The plenary lectures cover atomic transport and reaction in nano-structured materials; the formation and migration energy of native defects in silicon carbide from first principles; diffusion aspects in high temperature corrosion and in developing protective coatings; and grain boundary diffusion, stresses, and segregation.
Stereological arguments show that surface of the grain boundaries in unit volume can also be used to estimate the mean intercept length, l which is used in pile-up model of grain boundary effect on flow stress of polycrystals (Armstrong, 1983).