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Metallurgical and Materials Transactions A

, Volume 28, Issue 10, pp 2129–2135 | Cite as

Dynamics of solid/liquid interface shape evolution near an insoluble particle—An X-ray transmission microscopy investigation

  • S. Sen
  • P. Curreri
  • W. F. Kaukler
  • D. M. Stefanescu
Article

Abstract

In this article, for the first time, in situ and real-time experimental observations of changes in solid/liquid (s/l) interface shape during interactions with a particle or void are reported for metallic systems. Real-time interface shape evolution for both stationary and growing interfaces was observed by use of a state-of-the-art X-ray transmission microscope. Localized interfacial perturbations were studied as a function of the particle or void diameter, the distance between the s/l interface and the particle or void, and the thermal conductivity ratio between the matrix and the particle or void. In particular, the sensitivity of interfacial perturbation to the thermal conductivity ratio is critically analyzed. Analytical predictions of interface shape are compared to the real-time, in situ experimental data. A good agreement between the experimentally observed and predicted interface shapes was found for stationary interfaces. Based on the differences in experimental observations, between a moving and a stationary interface, an alternate hypothesis is suggested to explain the observed kinetics of particle engulfment by a growing interface.

Keywords

Material Transaction Boron Nitride Stationary Interface Critical Velocity Interface Shape 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© ASM International & TMS-The Minerals, Metals and Materials Society 1997

Authors and Affiliations

  • S. Sen
    • 1
  • P. Curreri
    • 1
  • W. F. Kaukler
    • 2
    • 3
  • D. M. Stefanescu
    • 4
  1. 1.NASA Marshall Space Flight Center, MSFC
  2. 2.Center for Microgravity and Materials ResearchUSA
  3. 3.the University of AlabamaHuntsville
  4. 4.the University of AlabamaTuscaloosa

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