Three-Dimensional Phase Field Simulation of Dendritic Morphology of Al-Si Alloy

被引：0

作者：

Zhang Bing ^{[1
]}

Zhao Yuhong ^{[1
]}

Wang Hong ^{[1
]}

Chen Weipeng ^{[1
]}

Hou Hua ^{[1
]}

机构：

[1] North Univ China, Taiyuan 030051, Shanxi, Peoples R China

来源：

RARE METAL MATERIALS AND ENGINEERING | 2019年 / 48卷 / 09期

关键词：

phase-field method; dendritic growth; three-dimensional adaptive grid; interface width; thermal noise; DIRECTIONAL SOLIDIFICATION; GROWTH DIRECTION; SELECTION; ARRAYS;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Based on the Karma thin interface phase-field model with the solid diffusivity, the effects of interface width and thermal noise on the dendrite growth behavior in undercooled melt of Al-Si alloy were studied by a three-dimensional adaptive meshing method. The simulation results show that with the increase of interface width, the complexity of dendrite morphology, the dendritic tip velocity and the solute concentration at the tip liquid phase decrease. With the increase of thermal noise amplitude, the dendritic tip changes slightly, and the number and asymmetry of secondary dendrites located on both sides of the dendrite increase.

引用

页码：2835 / 2840

页数：6

共 28 条

[1] Solidification microstructures and solid-state parallels: Recent developments, future directions [J].

Asta, M. ;

Beckermann, C. ;

Karma, A. ;

Kurz, W. ;

Napolitano, R. ;

Plapp, M. ;

Purdy, G. ;

Rappaz, M. ;

Trivedi, R. .

ACTA MATERIALIA, 2009, 57 (04) :941-971

[2] Dendritic Growth Morphologies in Al-Zn Alloys-Part II: Phase-Field Computations [J].

Dantzig, J. A. ;

Di Napoli, Paolo ;

Friedli, J. ;

Rappaz, M. .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2013, 44A (12) :5532-5543

[3]

Dantzig J.A., 2009, Solidification, P1

[4]

Echebarria B, 2004, PHYS REV E, V70, DOI 10.1103/PhysRevE.70.061604

[5] Competition between surface energy and elastic anisotropies in the growth of coherent solid-state dendrites [J].

Greenwood, Michael ;

Hoyt, Jeffrey J. ;

Provatas, Nikolas .

ACTA MATERIALIA, 2009, 57 (09) :2613-2623

[6] Orientation selection in dendritic evolution [J].

Haxhimali, Tomorr ;

Karma, Alain ;

Gonzales, Frederic ;

Rappaz, Michel .

NATURE MATERIALS, 2006, 5 (08) :660-664

[7]

[侯超杰 Hou Chaojie], 2016, [中国有色金属学报, The Chinese Journal of Nonferrous Metals], V26, P60

[8] Phase field model for three-dimensional dendritic growth with fluid flow [J].

Jeong, JH ;

Goldenfeld, N ;

Dantzig, JA .

PHYSICAL REVIEW E, 2001, 64 (04) :14

[9] Phase-field simulation of tip splitting in dendritic growth of Fe-C alloy [J].

Kang, Yong-sheng ;

Jin, Yu-chun ;

Zhao, Yu-hong ;

Hou, Hua ;

Chen, Li-wen .

JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL, 2017, 24 (02) :171-176

[10] Phase-field model of dendritic sidebranching with thermal noise [J].

Karma, A ;

Rappel, WJ .

PHYSICAL REVIEW E, 1999, 60 (04) :3614-3625

← 1 2 3 →