The effect of low cooling rates on dendrite morphology during directional solidification in Mg-Gd alloys: In situ X-ray radiographic observation

Yongbiao Wang; Liming Peng; Yanzhou Ji; Xiaoxing Cheng; Nan Wang; Yan Zhao; Yanan Fu; Long Qing Chen; Wenjiang Ding

doi:10.1016/j.matlet.2015.10.101

The effect of low cooling rates on dendrite morphology during directional solidification in Mg-Gd alloys: In situ X-ray radiographic observation

Yongbiao Wang, Liming Peng, Yanzhou Ji, Xiaoxing Cheng, Nan Wang, Yan Zhao, Yanan Fu, Long Qing Chen, Wenjiang Ding

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

24 Scopus citations

Abstract

The real time microstructure evolutions of directional solidification in Mg-Gd alloys are obtained by synchrotron X-ray radiography, and the effects of different low cooling rates under a fixed thermal gradient are studied. Different from the organic alloys, the growth direction of columnar dendrites gradually rotates to the direction of the thermal gradient as the cooling rates increase, which is attributed to the difference of undercooling. Meanwhile, the interface velocity increases but the mean dendrite spacing decreases, and the morphology varies with implication for solute segregation.

Original language	English (US)
Pages (from-to)	218-221
Number of pages	4
Journal	Materials Letters
Volume	163
DOIs	https://doi.org/10.1016/j.matlet.2015.10.101
State	Published - Jan 15 2016

All Science Journal Classification (ASJC) codes

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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title = "The effect of low cooling rates on dendrite morphology during directional solidification in Mg-Gd alloys: In situ X-ray radiographic observation",

abstract = "The real time microstructure evolutions of directional solidification in Mg-Gd alloys are obtained by synchrotron X-ray radiography, and the effects of different low cooling rates under a fixed thermal gradient are studied. Different from the organic alloys, the growth direction of columnar dendrites gradually rotates to the direction of the thermal gradient as the cooling rates increase, which is attributed to the difference of undercooling. Meanwhile, the interface velocity increases but the mean dendrite spacing decreases, and the morphology varies with implication for solute segregation.",

author = "Yongbiao Wang and Liming Peng and Yanzhou Ji and Xiaoxing Cheng and Nan Wang and Yan Zhao and Yanan Fu and Chen, {Long Qing} and Wenjiang Ding",

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doi = "10.1016/j.matlet.2015.10.101",

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T1 - The effect of low cooling rates on dendrite morphology during directional solidification in Mg-Gd alloys

T2 - In situ X-ray radiographic observation

AU - Wang, Yongbiao

AU - Peng, Liming

AU - Ji, Yanzhou

AU - Cheng, Xiaoxing

AU - Wang, Nan

AU - Zhao, Yan

AU - Fu, Yanan

AU - Chen, Long Qing

AU - Ding, Wenjiang

PY - 2016/1/15

Y1 - 2016/1/15

N2 - The real time microstructure evolutions of directional solidification in Mg-Gd alloys are obtained by synchrotron X-ray radiography, and the effects of different low cooling rates under a fixed thermal gradient are studied. Different from the organic alloys, the growth direction of columnar dendrites gradually rotates to the direction of the thermal gradient as the cooling rates increase, which is attributed to the difference of undercooling. Meanwhile, the interface velocity increases but the mean dendrite spacing decreases, and the morphology varies with implication for solute segregation.

AB - The real time microstructure evolutions of directional solidification in Mg-Gd alloys are obtained by synchrotron X-ray radiography, and the effects of different low cooling rates under a fixed thermal gradient are studied. Different from the organic alloys, the growth direction of columnar dendrites gradually rotates to the direction of the thermal gradient as the cooling rates increase, which is attributed to the difference of undercooling. Meanwhile, the interface velocity increases but the mean dendrite spacing decreases, and the morphology varies with implication for solute segregation.

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M3 - Article

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SN - 0167-577X

VL - 163

SP - 218

EP - 221

JO - Materials Letters

JF - Materials Letters

ER -

The effect of low cooling rates on dendrite morphology during directional solidification in Mg-Gd alloys: In situ X-ray radiographic observation

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