Anomalous overgrowth of converging dendrites during directional solidification

Honglei Yu; Junjie Li; Xin Lin; Lilin Wang; Weidong Huang

doi:10.1016/j.jcrysgro.2014.05.016

Anomalous overgrowth of converging dendrites during directional solidification

Honglei Yu, Junjie Li, Xin Lin, Lilin Wang, Weidong Huang

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

37 Scopus citations

Abstract

Competitive growth of converging dendrites in directional solidification was investigated by in situ observation in a succinonitrile-acetone alloy. The specific dendrite growth behavior was analyzed and compared with the results of phase field simulations. It is found that the growth of the well aligned grain boundary dendrite is retarded and the spacing between this dendrite and its immediate neighbors (λ_GB1) decreases continuously as the misaligned dendrites get to the grain boundary, one by one. The anomalous overgrowth only happens when the spacing λ_GB1decreases to certain level. Under the same solidification condition, smaller initial primary spacing makes the anomalous overgrowth take place earlier and more frequently.

Original language	English
Pages (from-to)	210-214
Number of pages	5
Journal	Journal of Crystal Growth
Volume	402
DOIs	https://doi.org/10.1016/j.jcrysgro.2014.05.016
State	Published - 2014

Keywords

A1. Crystal morphology
A1. Dendrites
A1. Directional solidification
A2. Growth from melt
B1. Metals

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10.1016/j.jcrysgro.2014.05.016

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title = "Anomalous overgrowth of converging dendrites during directional solidification",

abstract = "Competitive growth of converging dendrites in directional solidification was investigated by in situ observation in a succinonitrile-acetone alloy. The specific dendrite growth behavior was analyzed and compared with the results of phase field simulations. It is found that the growth of the well aligned grain boundary dendrite is retarded and the spacing between this dendrite and its immediate neighbors (λGB1) decreases continuously as the misaligned dendrites get to the grain boundary, one by one. The anomalous overgrowth only happens when the spacing λGB1decreases to certain level. Under the same solidification condition, smaller initial primary spacing makes the anomalous overgrowth take place earlier and more frequently.",

keywords = "A1. Crystal morphology, A1. Dendrites, A1. Directional solidification, A2. Growth from melt, B1. Metals",

author = "Honglei Yu and Junjie Li and Xin Lin and Lilin Wang and Weidong Huang",

note = "Publisher Copyright: {\textcopyright} 2014 Elsevier B.V.",

year = "2014",

doi = "10.1016/j.jcrysgro.2014.05.016",

language = "英语",

volume = "402",

pages = "210--214",

journal = "Journal of Crystal Growth",

issn = "0022-0248",

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TY - JOUR

T1 - Anomalous overgrowth of converging dendrites during directional solidification

AU - Yu, Honglei

AU - Li, Junjie

AU - Lin, Xin

AU - Wang, Lilin

AU - Huang, Weidong

PY - 2014

Y1 - 2014

N2 - Competitive growth of converging dendrites in directional solidification was investigated by in situ observation in a succinonitrile-acetone alloy. The specific dendrite growth behavior was analyzed and compared with the results of phase field simulations. It is found that the growth of the well aligned grain boundary dendrite is retarded and the spacing between this dendrite and its immediate neighbors (λGB1) decreases continuously as the misaligned dendrites get to the grain boundary, one by one. The anomalous overgrowth only happens when the spacing λGB1decreases to certain level. Under the same solidification condition, smaller initial primary spacing makes the anomalous overgrowth take place earlier and more frequently.

AB - Competitive growth of converging dendrites in directional solidification was investigated by in situ observation in a succinonitrile-acetone alloy. The specific dendrite growth behavior was analyzed and compared with the results of phase field simulations. It is found that the growth of the well aligned grain boundary dendrite is retarded and the spacing between this dendrite and its immediate neighbors (λGB1) decreases continuously as the misaligned dendrites get to the grain boundary, one by one. The anomalous overgrowth only happens when the spacing λGB1decreases to certain level. Under the same solidification condition, smaller initial primary spacing makes the anomalous overgrowth take place earlier and more frequently.

KW - A1. Crystal morphology

KW - A1. Dendrites

KW - A1. Directional solidification

KW - A2. Growth from melt

KW - B1. Metals

UR - http://www.scopus.com/inward/record.url?scp=84904434374&partnerID=8YFLogxK

U2 - 10.1016/j.jcrysgro.2014.05.016

DO - 10.1016/j.jcrysgro.2014.05.016

M3 - 文章

AN - SCOPUS:84904434374

SN - 0022-0248

VL - 402

SP - 210

EP - 214

JO - Journal of Crystal Growth

JF - Journal of Crystal Growth

ER -

Anomalous overgrowth of converging dendrites during directional solidification

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