铝合金热压过程中非均匀应变的数值模拟与实验研究

Q3 Engineering

International Journal of Computational Materials Science and Surface Engineering Pub Date : 2021-07-17 DOI:10.1504/ijcmsse.2021.10039681

Hai-gen Jian, Yedong Wang, Xiaomei Yang, Chen Mi, Xinlei Lei, Wei Zhang

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引用次数: 0

摘要

利用DEFORM-3D软件对B93铝合金热压变形过程进行了有限元数值模拟。此外，通过实验研究，分析了不同区域变形试样的微观结构特征以及变形过程中非均匀应变与动态再结晶的关系。结果表明，B93铝合金的热压缩过程具有明显的非均匀变形特征，等效应变最大的区域最易发生变形。此外，在最大等效应变区，动态再结晶反应最完全，晶粒尺寸达到最小值。随着应变速率和变形温度的升高，非均匀变形呈上升趋势，应变速率对非均匀变形的影响略大于变形温度。合金最适宜的热加工工艺为410～430°C/0.001～0.01s-1。

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Numerical simulation and experimental study on non-uniform strain during hot compression of aluminium alloy

The finite element numerical simulation of hot compression deformation process of B93 aluminium alloy was carried out by DEFORM-3D software. Besides, the microstructure characteristics of deformed specimens in different regions and the relationship between non-uniform strain and dynamic recrystallisation during deformation were analysed by experimental study. The results show that the hot compression process of B93 aluminium alloy obviously exhibits a nonuniform characteristic of deformation, the region with the largest equivalent strain is the most prone to deformation. Also, in the largest equivalent strain zone, dynamic recrystallisation reacts the most complete, and the grain size reaches the minimum value. Nonuniform deformation show a rising tendency with the increase of strain rate and deformation temperature, and the influence of strain rate on nonuniform deformation is slightly greater than that of deformation temperature. The most suitable hot working process for the alloy is 410~430°C/0.001~0.01s-1.

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来源期刊

International Journal of Computational Materials Science and Surface Engineering Engineering-Engineering (all)

CiteScore

1.20

自引率

0.00%

发文量

期刊介绍： IJCMSSE is a refereed international journal that aims to provide a blend of theoretical and applied study of computational materials science and surface engineering. The scope of IJCMSSE original scientific papers that describe computer methods of modelling, simulation, and prediction for designing materials and structures at all length scales. The Editors-in-Chief of IJCMSSE encourage the submission of fundamental and interdisciplinary contributions on materials science and engineering, surface engineering and computational methods of modelling, simulation, and prediction. Papers published in IJCMSSE involve the solution of current problems, in which it is necessary to apply computational materials science and surface engineering methods for solving relevant engineering problems.