Effect of different solute diffusivities on precipitate coarsening in ternary alloys

被引：8

作者：

Bhaskar, M. S. ^{[1
]}

Abinandanan, T. A. ^{[2
]}

机构：

[1] Mishra Dhatu Nigam Ltd, Dept Res & Dev, Hyderabad 500058, Andhra Pradesh, India

[2] Indian Inst Sci, Dept Mat Engn, Bangalore 560012, Karnataka, India

来源：

COMPUTATIONAL MATERIALS SCIENCE | 2018年 / 146卷

关键词：

Precipitation; Coarsening; Simulation; Phase field model; Ternary; PHASE-SEPARATION; MICROSTRUCTURAL EVOLUTION; NUMERICAL-SIMULATION; VOLUME FRACTION; KINETICS; PATHWAYS; BINARY; MODEL;

D O I：

10.1016/j.commatsci.2018.01.022

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

According to Gibbs phase rule, ternary two phase alloys have a single degree of freedom at equilibrium at a given temperature. Thus, multiple precipitate-matrix equilibrium compositions are possible at the interface. From Philippe-Voorhees' (PV) theory (Philippe and Voorhees, 2013), it is known that during coarsening in multicomponent alloys, precipitate-matrix compositions at the interface during coarsening are not just dependent on the Gibbs-Thomson effect but also on the relative mobilities of the solute elements. Our computer simulations, based on a phase field model, show that this effect of different solute diffusivities on size-dependent particle composition is more pronounced in alloys richer in the slower diffusing solute. (C) 2018 Elsevier B.V. All rights reserved.

引用

页码：73 / 83

页数：11

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