Coarsening in solid-liquid mixtures: A summary of results

D. J. Rowenhorst; J. Alkemper; V. Snyder; Peter W Voorhees

Coarsening in solid-liquid mixtures: A summary of results

D. J. Rowenhorst, J. Alkemper, V. Snyder, Peter W Voorhees

Materials Science and Engineering

Research output: Contribution to conference › Paper › peer-review

Abstract

The coarsening of solid Sn-rich particles in Pb-Sn liquid in a microgravity environment is examined. Volume fractions from 0.1 to 0.8 are analyzed. The low volume fraction samples allow for a direct comparison to coarsening theories with out any adjustable parameters. It was found that the system was not coarsening in a self similar manner, but rather evolved toward the steady-state conditions predicted by theory. The steady-state regime was not reached, even though for volume fractions 0.1 and 0.2, there was a increase of the average particle size by a factor of nearly 3. Also the spatial correlations for volume fractions ≤ 0.3 evolved in time. The evolution of these volume fractions agree with the predictions of a theory describing transient coarsening. We show that the rate at which the coarsening process approaches steady-state decreases as the volume fraction increases.

Original language	English (US)
State	Published - Dec 1 2001
Event	2001 Conference and Exhibit on International Space Station Utilization - Cape Canaveral, FL, United States Duration: Oct 15 2001 → Oct 18 2001

Other

Other	2001 Conference and Exhibit on International Space Station Utilization
Country	United States
City	Cape Canaveral, FL
Period	10/15/01 → 10/18/01

ASJC Scopus subject areas

Space and Planetary Science
Electrical and Electronic Engineering

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abstract = "The coarsening of solid Sn-rich particles in Pb-Sn liquid in a microgravity environment is examined. Volume fractions from 0.1 to 0.8 are analyzed. The low volume fraction samples allow for a direct comparison to coarsening theories with out any adjustable parameters. It was found that the system was not coarsening in a self similar manner, but rather evolved toward the steady-state conditions predicted by theory. The steady-state regime was not reached, even though for volume fractions 0.1 and 0.2, there was a increase of the average particle size by a factor of nearly 3. Also the spatial correlations for volume fractions ≤ 0.3 evolved in time. The evolution of these volume fractions agree with the predictions of a theory describing transient coarsening. We show that the rate at which the coarsening process approaches steady-state decreases as the volume fraction increases.",

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AU - Rowenhorst, D. J.

AU - Alkemper, J.

AU - Snyder, V.

AU - Voorhees, Peter W

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N2 - The coarsening of solid Sn-rich particles in Pb-Sn liquid in a microgravity environment is examined. Volume fractions from 0.1 to 0.8 are analyzed. The low volume fraction samples allow for a direct comparison to coarsening theories with out any adjustable parameters. It was found that the system was not coarsening in a self similar manner, but rather evolved toward the steady-state conditions predicted by theory. The steady-state regime was not reached, even though for volume fractions 0.1 and 0.2, there was a increase of the average particle size by a factor of nearly 3. Also the spatial correlations for volume fractions ≤ 0.3 evolved in time. The evolution of these volume fractions agree with the predictions of a theory describing transient coarsening. We show that the rate at which the coarsening process approaches steady-state decreases as the volume fraction increases.

AB - The coarsening of solid Sn-rich particles in Pb-Sn liquid in a microgravity environment is examined. Volume fractions from 0.1 to 0.8 are analyzed. The low volume fraction samples allow for a direct comparison to coarsening theories with out any adjustable parameters. It was found that the system was not coarsening in a self similar manner, but rather evolved toward the steady-state conditions predicted by theory. The steady-state regime was not reached, even though for volume fractions 0.1 and 0.2, there was a increase of the average particle size by a factor of nearly 3. Also the spatial correlations for volume fractions ≤ 0.3 evolved in time. The evolution of these volume fractions agree with the predictions of a theory describing transient coarsening. We show that the rate at which the coarsening process approaches steady-state decreases as the volume fraction increases.

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