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基于元胞自动机-有限元模拟的47Zr-45Ti-5Al-3V合金动态再结晶行为研究

Study on the Dynamic Recrystallization Behavior of 47Zr-45Ti-5Al-3V Alloy by CA-FE Simulation.

作者信息

Zhang Wenwei, Yang Qiuyue, Tan Yuanbiao, Yang Ya, Xiang Song, Zhao Fei

机构信息

Guizhou Key Laboratory of Materials Mechanical Behavior and Microstructure, College of Materials and Metallurgy, Guizhou University, Guiyang 550025, China.

出版信息

Materials (Basel). 2021 May 14;14(10):2562. doi: 10.3390/ma14102562.

DOI:10.3390/ma14102562
PMID:34069289
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8156880/
Abstract

The dynamic recrystallization (DRX) behavior of 47Zr-45Ti-5Al-3V alloy was studied by using the experiment and numerical simulation method based on DEFORM-3D software and cellular automata (CA) over a range of deformation temperatures (850 to 1050 °C) and strain rates (10 to 10 s). The results reveal that the DRX behavior of 47Zr-45Ti-5Al-3V alloy strongly depends on hot-working parameters. With rising deformation temperature () and decreasing strain rate (ε˙), the grain size (dDRX) and volume fraction (XDRX) of DRX dramatically boost. The kinetics models of the dDRX and XDRX of DRX grains were established. According to the developed kinetics models for DRX of 47Zr-45Ti-5Al-3V alloy, the distributions of the dDRX and XDRX for DRX grains were predicted by DEFORM-3D. DRX microstructure evolution is simulated by CA. The correlation of the kinetics model is verified by comparing the dDRX and XDRX between the experimental and finite element simulation (FEM) results. The nucleation and growth of dynamic recrystallization grains in 47Zr-45Ti-5Al-3V alloy during hot-working can be simulated accurately by CA simulation, comparing with FEM.

摘要

采用实验和数值模拟方法，基于DEFORM-3D软件和元胞自动机（CA），研究了47Zr-45Ti-5Al-3V合金在一系列变形温度（850至1050℃）和应变速率（10至10s）下的动态再结晶（DRX）行为。结果表明，47Zr-45Ti-5Al-3V合金的DRX行为强烈依赖于热加工参数。随着变形温度（）升高和应变速率（ε˙）降低，DRX的晶粒尺寸（dDRX）和体积分数（XDRX）显著增大。建立了DRX晶粒的dDRX和XDRX动力学模型。根据所建立的47Zr-45Ti-5Al-3V合金DRX动力学模型，利用DEFORM-3D预测了DRX晶粒的dDRX和XDRX分布。通过CA模拟了DRX微观组织演变。通过比较实验结果和有限元模拟（FEM）结果中的dDRX和XDRX，验证了动力学模型的相关性。与FEM相比，CA模拟能够准确模拟47Zr-45Ti-5Al-3V合金热加工过程中动态再结晶晶粒的形核与长大。

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Materials (Basel). 2022 Feb 13;15(4):1382. doi: 10.3390/ma15041382.