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Spatiotemporal Pattern of FeNi Metal Melt Solidification and Crystallization Mechanism in Space

  • Xiande XieEmail author
  • Ming Chen
Chapter
  • 14 Downloads

Abstract

The tetra-concentric-ring structure was found to be the fundamental spatiotemporal pattern of the FeNi metal solidification–crystallization in the microgravity environment in space. It was revealed that the single-layer tetra-concentric-ring structure is a fundamental unit involved in the growth of metal dendrites. Its repetition will result in a double-layer-branched dendrite, and its multi-repetition will result in a multi-layer-concentric-ring structure, thus giving rise to multi-layer-branched dendrites. The formation, propagation, and interaction of tetra-concentric-ring structures in the same layer are responsible for the growth of dendrite tip and stern, while dendrite sidebranches are grown up at the junction of interaction of coupled tetra-concentric-ring growth steps between the adjacent layers.

Keywords

Metal dendrite Spatiotemporal pattern Tetra-concentric-ring structure Microgravity environment 

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Copyright information

© Guangdong Science & Technology Press Co., Ltd and Springer Nature Singapore Pte Ltd. 2020

Authors and Affiliations

  1. 1.Guangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhouChina

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