Permeabilities for flow of interdendritic liquid in equiaxial structures

D. R. Poirier; S. Ganesan

doi:10.1016/0921-5093(92)90105-A

Permeabilities for flow of interdendritic liquid in equiaxial structures

D. R. Poirier, S. Ganesan

Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

64 Scopus citations

Abstract

Permeabilities for the flow of interdendritic liquid in Al-15.6wt.%Cu alloy with equiaxial structures were measured and found to be structure sensitive. The center-to-center distance between grains (153-259 μm), specific surface area (2.57 × 10^-2-6.96 × 10^-1 μm^-1) and volume fraction of liquid (0.166-0.434) were the structural parameters studied in this investigation. During a test, coarsening of the dendrites occurred, wherein the solid morphology went from dendritic to dendritic-globular and ultimately to globular for longer times. The permeabilities of the globular structures (non-dendritic) were found to be approximately one order of magnitude greater than the permeabilities for the dendritic-globular structures, when the volume fraction of liquid is approximately 0.3. The dimensionless permeability, based on the specific surface, was found to represent best the empirical data for the globular and dendritic morphologies and the theoretical results for flow through different arrays of uniform spheres.

Original language	English (US)
Pages (from-to)	113-123
Number of pages	11
Journal	Materials Science and Engineering A
Volume	157
Issue number	1
DOIs	https://doi.org/10.1016/0921-5093(92)90105-A
State	Published - Sep 1 1992

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1016/0921-5093(92)90105-A

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title = "Permeabilities for flow of interdendritic liquid in equiaxial structures",

abstract = "Permeabilities for the flow of interdendritic liquid in Al-15.6wt.%Cu alloy with equiaxial structures were measured and found to be structure sensitive. The center-to-center distance between grains (153-259 μm), specific surface area (2.57 × 10-2-6.96 × 10-1 μm-1) and volume fraction of liquid (0.166-0.434) were the structural parameters studied in this investigation. During a test, coarsening of the dendrites occurred, wherein the solid morphology went from dendritic to dendritic-globular and ultimately to globular for longer times. The permeabilities of the globular structures (non-dendritic) were found to be approximately one order of magnitude greater than the permeabilities for the dendritic-globular structures, when the volume fraction of liquid is approximately 0.3. The dimensionless permeability, based on the specific surface, was found to represent best the empirical data for the globular and dendritic morphologies and the theoretical results for flow through different arrays of uniform spheres.",

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AU - Poirier, D. R.

AU - Ganesan, S.

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N2 - Permeabilities for the flow of interdendritic liquid in Al-15.6wt.%Cu alloy with equiaxial structures were measured and found to be structure sensitive. The center-to-center distance between grains (153-259 μm), specific surface area (2.57 × 10-2-6.96 × 10-1 μm-1) and volume fraction of liquid (0.166-0.434) were the structural parameters studied in this investigation. During a test, coarsening of the dendrites occurred, wherein the solid morphology went from dendritic to dendritic-globular and ultimately to globular for longer times. The permeabilities of the globular structures (non-dendritic) were found to be approximately one order of magnitude greater than the permeabilities for the dendritic-globular structures, when the volume fraction of liquid is approximately 0.3. The dimensionless permeability, based on the specific surface, was found to represent best the empirical data for the globular and dendritic morphologies and the theoretical results for flow through different arrays of uniform spheres.

AB - Permeabilities for the flow of interdendritic liquid in Al-15.6wt.%Cu alloy with equiaxial structures were measured and found to be structure sensitive. The center-to-center distance between grains (153-259 μm), specific surface area (2.57 × 10-2-6.96 × 10-1 μm-1) and volume fraction of liquid (0.166-0.434) were the structural parameters studied in this investigation. During a test, coarsening of the dendrites occurred, wherein the solid morphology went from dendritic to dendritic-globular and ultimately to globular for longer times. The permeabilities of the globular structures (non-dendritic) were found to be approximately one order of magnitude greater than the permeabilities for the dendritic-globular structures, when the volume fraction of liquid is approximately 0.3. The dimensionless permeability, based on the specific surface, was found to represent best the empirical data for the globular and dendritic morphologies and the theoretical results for flow through different arrays of uniform spheres.

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Permeabilities for flow of interdendritic liquid in equiaxial structures

Abstract

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