Decoupling effect stimulated independent dendrite growth of eutectic phases under microgravity and containerless states

Haipeng Wang; Hui Liao; Jian Chang; Dingnan Liu; Qing Wang; Mingxing Li; Chenhui Zheng; Liang Hu; Bingbo Wei

doi:10.1016/j.mattod.2024.04.009

Decoupling effect stimulated independent dendrite growth of eutectic phases under microgravity and containerless states

Haipeng Wang, Hui Liao, Jian Chang, Dingnan Liu, Qing Wang, Mingxing Li, Chenhui Zheng, Liang Hu, Bingbo Wei

School of Physical Science and Technology

Northwestern Polytechnical University Xian

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

8 Scopus citations

Abstract

Eutectic growth process is usually characterized by the simultaneous coupled growth of two different solids within one uniform liquid phase, while fluid dynamics normally predicts the equiaxed shrinkage for floating viscous droplets on freezing. Here a decoupling effect was induced by the microgravity and containerless states aboard space station, which led to the independent dendrite growth of two eutectic phases within extremely undercooled liquid Nb-Si refractory alloy. The confronting fluid flow pattern driven by polar heterogeneous nucleation was found to stimulate the elongated surface deformation of alloy droplet at a high dendrite growth velocity.

Original language	English
Pages (from-to)	386-392
Number of pages	7
Journal	Materials Today
Volume	75
DOIs	https://doi.org/10.1016/j.mattod.2024.04.009
State	Published - Jun 2024

Keywords

Decoupled growth kinetics
Elongated surface deformation
Eutectic
Microgravity and containerless

Access to Document

10.1016/j.mattod.2024.04.009

Cite this

@article{9f37af347b2640a9804ba66d6ee9e4c4,

title = "Decoupling effect stimulated independent dendrite growth of eutectic phases under microgravity and containerless states",

abstract = "Eutectic growth process is usually characterized by the simultaneous coupled growth of two different solids within one uniform liquid phase, while fluid dynamics normally predicts the equiaxed shrinkage for floating viscous droplets on freezing. Here a decoupling effect was induced by the microgravity and containerless states aboard space station, which led to the independent dendrite growth of two eutectic phases within extremely undercooled liquid Nb-Si refractory alloy. The confronting fluid flow pattern driven by polar heterogeneous nucleation was found to stimulate the elongated surface deformation of alloy droplet at a high dendrite growth velocity.",

keywords = "Decoupled growth kinetics, Elongated surface deformation, Eutectic, Microgravity and containerless",

author = "Haipeng Wang and Hui Liao and Jian Chang and Dingnan Liu and Qing Wang and Mingxing Li and Chenhui Zheng and Liang Hu and Bingbo Wei",

note = "Publisher Copyright: {\textcopyright} 2024 Elsevier Ltd",

year = "2024",

month = jun,

doi = "10.1016/j.mattod.2024.04.009",

language = "英语",

volume = "75",

pages = "386--392",

journal = "Materials Today",

issn = "1369-7021",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Decoupling effect stimulated independent dendrite growth of eutectic phases under microgravity and containerless states

AU - Wang, Haipeng

AU - Liao, Hui

AU - Chang, Jian

AU - Liu, Dingnan

AU - Wang, Qing

AU - Li, Mingxing

AU - Zheng, Chenhui

AU - Hu, Liang

AU - Wei, Bingbo

PY - 2024/6

Y1 - 2024/6

N2 - Eutectic growth process is usually characterized by the simultaneous coupled growth of two different solids within one uniform liquid phase, while fluid dynamics normally predicts the equiaxed shrinkage for floating viscous droplets on freezing. Here a decoupling effect was induced by the microgravity and containerless states aboard space station, which led to the independent dendrite growth of two eutectic phases within extremely undercooled liquid Nb-Si refractory alloy. The confronting fluid flow pattern driven by polar heterogeneous nucleation was found to stimulate the elongated surface deformation of alloy droplet at a high dendrite growth velocity.

AB - Eutectic growth process is usually characterized by the simultaneous coupled growth of two different solids within one uniform liquid phase, while fluid dynamics normally predicts the equiaxed shrinkage for floating viscous droplets on freezing. Here a decoupling effect was induced by the microgravity and containerless states aboard space station, which led to the independent dendrite growth of two eutectic phases within extremely undercooled liquid Nb-Si refractory alloy. The confronting fluid flow pattern driven by polar heterogeneous nucleation was found to stimulate the elongated surface deformation of alloy droplet at a high dendrite growth velocity.

KW - Decoupled growth kinetics

KW - Elongated surface deformation

KW - Eutectic

KW - Microgravity and containerless

UR - http://www.scopus.com/inward/record.url?scp=85192564576&partnerID=8YFLogxK

U2 - 10.1016/j.mattod.2024.04.009

DO - 10.1016/j.mattod.2024.04.009

M3 - 文章

AN - SCOPUS:85192564576

SN - 1369-7021

VL - 75

SP - 386

EP - 392

JO - Materials Today

JF - Materials Today

ER -

Decoupling effect stimulated independent dendrite growth of eutectic phases under microgravity and containerless states

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this