microsegregation

[¦mī·krō‚seg·rə′gā·shən]

(metallurgy)

Segregation within a grain, crystal, or particle of microscopic size.

Mentioned in ?

metallography

References in periodicals archive ?

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.

Enhanced castability, properties in copper-manganese alloys: a near-congruent copper-manganese alloy produces high castability and good mechanical properties, which could potentially lead to cast applications

Characterization of peritectic reaction in medium- alloy steel through microsegregation and heat-of-transformation studies.

Experimental methodology to evaluate the contraction of peritectic steels under different heat extration conditions/Metodologia experimental para avaliacao da contracao dos acos periteticos em diferentes condicoes de extracao de calor

A study of microstructure and microsegregation of aluminium 7050 alloy.

Influence of the coating tool on the morphology of the chips obtained during the dry turning of UNS A97050-T7 aluminium alloys

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.

Electroslag technology for aerospace alloys

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.

Materials processing during casting

Boettinger, Prediction of dendritic growth and microsegregation patterns in a binary alloy using the phase-field method, Acta Metall.

Accelerating Scientific Discovery Through Computation and Visualization

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.

Thermoplastic Apparent Interpenetrating Polymer Networks of Polyurethane and Styrene/Acrylic Acid Copolymer Obtained by Melt Mixing. Structure-Properly Relationships

Chapter 7: Microsegregation in Alloys - Peritectic Reactions and Transformations.

Research and Markets: Materials Processing During Casting

The two types of segregation are microsegregation and macrosegregation.

Understanding segregation to predict solidification: solidification paths may be calculated from segregation equations, and may be used to pinpoint optimum alloy compositions for your castings

Martensite structure between carbide lines is of non-acicular nature because of microsegregation, and in the areas of accumulation of carbides acicular martensite with low etching capacity is present.

Morphology of carbides and microstructure of steel R6M5 of electron beam remelting

There are four main areas detailed: fundamentals of solidification synthesis, which examines issues related to stir mixing, pressure infiltration, transfer of particles or fibers through gas-liquid and liquid-solid interfaces, and particle/fiber interactions with fluids; processing and microstructures, which focuses on microstructure formation during solidification of MMC under different conditions, such as nucleation, growth, heat transfer, microsegregation, macrosegregation and interactions between solidifying interfaces, particles and fibers; and, properties of solidification processing, covering the relationship between the microstructures and properties.

Research and Markets: Solidification Processing of Metal Matrix Composites: Rohatgi Honorary Symposium

In a paper describing their work, Sarum Boonmee, Molly Moran and Doru Stefanescu explained the endurance limit that arises in the presence of casting skin, developed a "fatigue skin factor" to quantify the effect the skin has and evaluated the microsegregation of the alloy surface.

Measuring the effect of surface structure on fatigue: recent research explored the negative effect of casting skin on the dynamic property of fatigue in iron castings. A modern casting staff report