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

^*Corresponding author for this work

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

21 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
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 - 15 Jan 2016
Externally published	Yes

Keywords

Cooling rates
Directional solidification
Growth direction
Mg-Gd alloys
X-ray radiography

Access to Document

10.1016/j.matlet.2015.10.101

Cite this

@article{e932808243f64ab688517252f7c6ccaa,

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.",

keywords = "Cooling rates, Directional solidification, Growth direction, Mg-Gd alloys, X-ray radiography",

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",

note = "Publisher Copyright: {\textcopyright} 2015 Published by Elsevier B.V.",

year = "2016",

month = jan,

day = "15",

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

language = "英语",

volume = "163",

pages = "218--221",

journal = "Materials Letters",

issn = "0167-577X",

publisher = "Elsevier",

}

TY - JOUR

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.

KW - Cooling rates

KW - Directional solidification

KW - Growth direction

KW - Mg-Gd alloys

KW - X-ray radiography

UR - http://www.scopus.com/inward/record.url?scp=84945390446&partnerID=8YFLogxK

U2 - 10.1016/j.matlet.2015.10.101

DO - 10.1016/j.matlet.2015.10.101

M3 - 文章

AN - SCOPUS:84945390446

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

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this