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Related Concept Videos

  1. Home
  3. Research Domains
  5. Physical Sciences
  7. Condensed Matter Physics
  9. Surface Properties Of Condensed Matter
  11. Dynamic Localization Effect Of Dendritic And Eutectic Growth Patterns Stimulated By Space Fluid Flow.
  1. Home
  3. Research Domains
  5. Physical Sciences
  7. Condensed Matter Physics
  9. Surface Properties Of Condensed Matter
  11. Dynamic Localization Effect Of Dendritic And Eutectic Growth Patterns Stimulated By Space Fluid Flow.

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Dynamic Localization Effect of Dendritic and Eutectic Growth Patterns Stimulated by Space Fluid Flow.

Hui Liao1, Haipeng Wang1, Dingnan Liu1

  • 1School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, China.

Advanced Materials (Deerfield Beach, Fla.)
|August 13, 2025

View abstract on PubMed

Summary
This summary is machine-generated.

Space fluid flow during solidification experiments on China Space Station revealed novel eutectic and dendritic growth patterns. Microgravity conditions enable controlled crystal growth and in-situ space manufacturing.

Keywords:
dendrite and eutecticdynamic localization effectfluid flowgrowth patterns

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Area of Science:

  • Materials Science
  • Solidification Physics
  • Space Science

Background:

  • Conventional solidification theory predicts fixed eutectic morphologies and parabolic dendritic tips under negligible volume effects.
  • Terrestrial gravity-induced convection disrupts ordered phase separation during solidification.
  • Microgravity offers a unique environment to study fundamental solidification processes.

Purpose of the Study:

  • To investigate the influence of space fluid flow on eutectic and dendritic growth patterns.
  • To understand the mechanisms driving transitions in solidification morphologies under microgravity.
  • To explore applications in space manufacturing and controlled crystal growth.

Main Methods:

  • Experiments conducted aboard the China Space Station.
microgravity
  • Observation of eutectic and dendritic growth dynamics under microgravity.
  • Analysis of solute-thermal coupling and Marangoni convection effects.

    • Main Results:

    • Space fluid flow localized solute-thermal coupling, inducing transitions among worm-like, lamellar, and faceted eutectic growth patterns.
    • Marangoni convection at large undercoolings resulted in non-parabolic dendritic tip morphologies (dome-like, finger-like, needle-like).
    • Ordered separation of eutectic and dendritic zones was observed, governed by localized temperature and concentration fields, unlike in terrestrial gravity.

    Conclusions:

    • Microgravity conditions, driven by space fluid flow, significantly alter solidification dynamics, leading to novel growth patterns.
    • The findings challenge conventional solidification theories and highlight the importance of fluid flow in phase transitions.
    • This research has implications for in-situ resource utilization and advanced material manufacturing in space.