Effect of traveling magnetic field on solute distribution and dendritic growth in unidirectionally solidifying Sn-50 wt%Pb alloy: An in situ observation

被引：18

作者：

Cao, Fei ^{[1
]}

Yang, Fenfen ^{[1
]}

Kang, Huijun ^{[1
]}

Zou, Cunlei ^{[1
]}

Xiao, Tiqiao ^{[2
]}

Huang, Wanxia ^{[3
]}

Wang, Tongmin ^{[1
]}

机构：

[1] Dalian Univ Technol, Key Lab Solidificat Control & Digital Preparat Te, Sch Mat Sci & Engn, Dalian 116024, Peoples R China

[2] Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201204, Peoples R China

[3] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China

来源：

JOURNAL OF CRYSTAL GROWTH | 2016年 / 450卷

基金：

中国国家自然科学基金;

关键词：

Directional solidification; Convection; Traveling magnetic field; Synchrotron X-ray radiography; Dendritic growth; Sn-Pb alloy; X-RAY RADIOGRAPHY; DIRECTIONAL SOLIDIFICATION; MELT CONVECTION; NI-ALLOYS; MICROSTRUCTURE; FRAGMENTATION; STATE; PCT;

D O I：

10.1016/j.jcrysgro.2016.06.034

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

Synchrotron X-ray radiography was used to in situ study the solute distribution and the dendritic growth during the bottom-up solidification of Sn-50 wt%Pb alloy under a traveling magnetic field (TMF) for the first time. The buoyance driven evolution and motion of the plumes containing Sn-rich melt are directly observed in the solidification front before the application of TMF. A forced melt flow from left to right is induced with the application of TMF, which results in the redistribution of the solute concentration (facilitate the solute transportation and reduce the local fluctuations considerably) and the change of the dendrite morphologies (promote/suppress the growth of the secondary arms, remelting and fragmentation of dendrites). Meanwhile, the concentration variations of Sn around the solidification front are quantitatively analyzed through the extraction of gray level from sequenced X-ray images. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：91 / 95

页数：5

共 29 条

[1] Recent development and prospect of electromagnetic processing of materials
Asai, S.
[J]. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS, 2000, 1 (04) : 191 - 200
[2] Visualization of freckle formation induced by forced melt convection in solidifying GaIn alloys
Boden, S.
Eckert, S.
Gerbeth, G.
[J]. MATERIALS LETTERS, 2010, 64 (12) : 1340 - 1343
[3] Mechanical stir casting of aluminium alloys from the mushy state: process, microstructure and mechanical properties
Brabazon, D
Browne, DJ
Carr, AJ
[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2002, 326 (02): : 370 - 381
[4] Effect of growth rate and composition on the primary spacing, the dendrite tip radius and mushy zone depth in the directionally solidified succinonitrile-Salol alloys
Çadirli, E
Karaca, I
Kaya, H
Marasli, N
[J]. JOURNAL OF CRYSTAL GROWTH, 2003, 255 (1-2) : 190 - 203
[5] Magnetohydrodynamics in materials processing
Davidson, PA
[J]. ANNUAL REVIEW OF FLUID MECHANICS, 1999, 31 : 273 - 300
[6] Semisolid metal processing
Fan, Z
[J]. INTERNATIONAL MATERIALS REVIEWS, 2002, 47 (02) : 49 - 85
[7] Experimental study of the solidification of Sn-10 wt.%Pb alloy under different forced convection in benchmark experiment
Hachani, Lakhdar
Zaidat, Kader
Fautrelle, Yves
[J]. INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2015, 85 : 438 - 454
[8] Solidification of Pb-Sn alloys under ultrasonic field
Haghayeghi, R.
Kapranos, P.
[J]. MATERIALS LETTERS, 2014, 126 : 244 - 248
[9] Separation mechanism of the primary Si phase from the hypereutectic Al-Si alloy using a rotating magnetic field during solidification
Jie, J. C.
Zou, Q. C.
Sun, J. L.
Lu, Y. P.
Wang, T. M.
Li, T. J.
[J]. ACTA MATERIALIA, 2014, 72 : 57 - 66
[10] Grain refinement of Al-Cu alloy in low voltage pulsed magnetic field
Li, Y. J.
Tao, W. Z.
Yang, Y. S.
[J]. JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2012, 212 (04) : 903 - 909

← 1 2 3 →