Phase-field simulation of Non-Isothermal dendritic growth of NiCu alloy

被引：2

作者：

Wang Ming-Guang ^{[1
]}

Zhao Yu-Hong ^{[1
]}

Ren Juan-Na ^{[1
]}

Mu Yan-Qing ^{[1
]}

Wang Wei ^{[1
]}

Yang Wei-Ming ^{[1
]}

Li Ai-Hong ^{[1
]}

Ge Hong-Hao ^{[1
]}

Hou Hua ^{[1
]}

机构：

[1] N Univ China, Mat Sci & Engn Coll, Taiyuan 030051, Peoples R China

来源：

ACTA PHYSICA SINICA | 2011年 / 60卷 / 04期

基金：

中国国家自然科学基金;

关键词：

phase-field model; Ni-Cu dual single-phase alloy; dendrite growth; Ivantsov theory; NUMERICAL-SIMULATION; BINARY ALLOY; SOLIDIFICATION; COMPUTATION;

D O I：

10.7498/aps.60.040507

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Phase-field model is used and The dendrite growth of a Ni-40.83% Cu binaryalloy under were simulated by the model coupled with solute field and temperature field. The effects of solidification latent heat on the growth of equiaxed dendrite, distribution of solute field and temperature field in undercooled liquid alloy were analyzed. The results indicate that the dendritic has well-developed secondary arms as undercooling degree increases. Correspondently, the solute Peclet number and the tip speed increases, the tip radius decreases, and the solute segregation in solid-liquid interface increases. The results agree well with Ivantsov theory.

引用

页数：6

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