Solidification Microstructure Simulation of Ti-6Al-4V Ternary Alloy Welding Pool

被引：0

作者：

Zhang M. ^{[1
]}

Guo Y. ^{[1
]}

Huang C. ^{[1
]}

Zhang L. ^{[1
]}

Zhang W. ^{[1
]}

机构：

[1] School of Materials Science and Engineering, Xi'an University of Technology, Xi'an

来源：

Cailiao Daobao/Materials Reports | 2021年 / 35卷 / 08期

基金：

中国国家自然科学基金;

关键词：

Cellular automaton; Dendritic morphology; Solute concentration; Ternary alloy; Welding pool;

D O I：

10.11896/cldb.19080181

中图分类号：

学科分类号：

摘要：

Based on the binary alloy cellular automaton model, combined with the thermodynamic phase equilibrium software, a ternary alloy cellular automaton model was proposed. The stability of the model was verified. The morphology of dendritic growth, the distribution of solute concentration and the effect of disturbance amplitude on dendritic growth during solidification of the welding pool of Ti-6Al-4V ternary alloy were simulated. And carried out metallographic experiments to verify. The results show that the model is stable and can realize the numerical simulation of solidification process in the weld pool of ternary alloy, and the preferred growth of dendrite in the weld pool is remarkable and there is grain boundary segregation. The concentration distribution of Al and V in the liquid phase is approximately the same. As the amplitude of the disturbance increases, the number of dendrites in the molten pool increases gradually, the distance between the dendrite arms decreases, and the competitive growth further strengthens. The simulation results are basically consistent with the experimental results. © 2021, Materials Review Magazine. All right reserved.

引用

页码：8116 / 8120

页数：4

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