microsegregation

microsegregation

[¦mī·krō‚seg·rə′gā·shən]
(metallurgy)
Segregation within a grain, crystal, or particle of microscopic size.
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References in periodicals archive ?
Stevens-Kalceff, "Electron-Irradiation-Induced Radiolytic Oxygen Generation and Microsegregation in Silicon Dioxide Polymorphs," Physical Review Letters, vol.
However, microsegregation of Al and Nb elements can be easily induced in the castings of the alloys.
An EDS element line scan across areas of microsegregation in the 0.5 Er powders (inset of Figure 2(b)) indicates cosegregation of Er and Mg as shown in Figure 2(d).
While segregation from neighborhood to neighborhood is decreasing (microsegregation) within metropolitan areas, segregation from suburban communities (e.g., towns, villages, and cities) to other suburban communities within the same metropolitan areas and from major metropolitan cities to their suburban communities is increasing (macrosegregation).
In casting, cellular solidification is highly advantageous from the standpoint of reducing or eliminating the defects associated with dendritic solidification, including microporosity, microsegregation, and hot-tearing.
Although the electrode must be sound and stress relieved to prevent cracking or fragmentation during melting, the presence of minor central cavities and substantial microsegregation are permitted.
They cover component casting, cast house processes, casting hydrodynamics, heat transport during component casting and cast house processes, structure and structure formation in cast materials, microsegregation in alloys, heat treatment and plastic forming, precipitation of pores and slag inclusions during the casting process, solidification and cooling shrinkage of metals and alloys, and macrosegregation in alloys.
Boettinger, Prediction of dendritic growth and microsegregation patterns in a binary alloy using the phase-field method, Acta Metall.
A possible explanation is that the viscoelastic behavior for these compositions and the temperature range of interest here is dominated by the AA component, as a result of microsegregation of AA due to formation of H- bonds between COOH- groups of AA and ester groups of flexible CPU- blocks.