Evolution of specific interface area during solidification: A three-dimensional thermosolutal phase-field study

被引：16

作者：

Zhang, Ang ^{[1
,2
]}

Du, Jinglian ^{[2
]}

Guo, Zhipeng ^{[3
]}

Wang, Qigui ^{[4
]}

Xiong, Shoumei ^{[2
]}

机构：

[1] Chongqing Univ, Coll Mat Sci & Engn, Natl Engn Res Ctr Magnesium Alloys, Chongqing 400044, Peoples R China

[2] Tsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R China

[3] Beijing Supreium Co Ltd, Beijing 100089, Peoples R China

[4] GM Global Prop Syst, Mat Technol, Pontiac, MI 48340 USA

来源：

COMPUTER PHYSICS COMMUNICATIONS | 2021年 / 267卷

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

Dendrite growth; Interface area; Phase-field simulation; Solidification; DENDRITIC GROWTH; MORPHOLOGICAL EVOLUTION; GRAIN-GROWTH; RECRYSTALLIZATION; MICROSTRUCTURES; IMPINGEMENT; SIMULATIONS; SCHEME; MODEL;

D O I：

10.1016/j.cpc.2021.108042

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

By developing a multilevel thermosolutal phase-field lattice-Boltzmann method, we achieve three-dimensional phase-field simulations of dendrite growth with realistic Lewis number (Le similar to 10(4)) in equivalently over 10(8) uniform meshes. In addition to parallel computing and mesh adaptivity, the high-performance computing algorithm allows the time step enlarged by 2-3 orders of magnitude in an explicit scheme. Dependence of specific interface area, an integral measure of solidification microstructure, on time t and solid fraction f(s) is revisited including the t(1/3) coarsening law and f(s)(p)(1 - f(s))(q) growth law (p and q are constants). The effect of latent heat on the evolution of specific interface area is evaluated, and such effect is equivalent to isothermal case or frozen-temperature approximation if Le exceeds 5000. (C) 2021 Elsevier B.V. All rights reserved.

引用

页数：6

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