Development of a simulation approach to microstructure evolution during solidification and homogenization using the phase field method

被引：0
|
作者：
Warnken, N. [1 ,2 ]
Drevermann, A. [2 ]
Ma, D. [3 ]
Fries, S. G. [4 ]
Steinbach, I. [2 ]
机构：
[1] Univ Birmingham, Dept Met & Mat, Birmingham B15 2TT, W Midlands, England
[2] ACCESS eV, D-52072 Aachen, Germany
[3] Rhein Westfal TH Aachen, Foundry Inst, D-52072 Aachen, Germany
[4] SGF Sci Consultancy, D-52072 Aachen, Germany
来源：
SUPERALLOYS 2008 | 2008年
关键词：
microstructure modelling; solidification; solution heat treatment; phase-field; CALPHAD; diffusion; single crystal solidification;
D O I：
暂无
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
A numerical method for the simulation of microstructure formation during the solidification and solution heat treatment of single crystal superalloys is presented. The method is based on the phase-field method, coupled to thermodynamic calculation (CALPHAD) and kinetic databases. Simulations are performed in a representative transverse section of a directionally solidified dendritic array. Calculated as-cast structures form the bases for the subsequent solution heat treatment simulations. The method is applied to simulate microstructure fromation in a five component model Ni-base superalloy (Ni-5.8Al-9.10Cr-7.9TA-8.8W, wt.%). Experiments were carried out for validation and good agreement with the model predictions is observed.
引用
收藏
页码：951 / +
页数：3
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