Plastic strain related tensile-compressive asymmetric yield behavior of pulse current assisted AZ31B magnesium alloy forming

IF 2.6 3区材料科学 Q2 ENGINEERING, MANUFACTURING

International Journal of Material Forming Pub Date : 2025-04-30 DOI:10.1007/s12289-025-01909-4

Yu Yan, Yuxuan Wang, Haibo Wang, Gence Fan

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Abstract

To effectively predict the deformation behavior of AZ31B magnesium alloy (Mg alloy) in plastic forming assisted by pulse current, the influences of different pulse currents’ frequencies on the flow stress of Mg alloy were studied. The Voce and Hockett-Sherby constitutive models were modified to include the influence of frequencies, and the parameters of the constitutive models were calibrated based on the experimental data. The Cazacu 2004 yield criterion was improved to describe the yield behavior under the action of pulse current, in which the tensile-compressive asymmetry keeps changing with the increase of plastic strain. The three-point bending tests of AZ31B Mg alloy assisted by different frequency pulse currents were carried out. The improved constitutive model and yield criterion were embedded in ABAQUS using user material subroutine VUMAT for the corresponding three-point bending simulation. It is found that the improved constitutive model and yield criterion considering the current frequencies and tensile-compressive asymmetry can obviously improve the simulation accuracy.

Graphical Abstract

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脉冲电流辅助AZ31B镁合金成形的塑性应变相关拉压不对称屈服行为

为了有效预测AZ31B镁合金（Mg合金）在脉冲电流辅助塑性成形过程中的变形行为，研究了不同脉冲电流频率对镁合金流变应力的影响。修正了Voce和Hockett-Sherby本构模型，纳入了频率的影响，并根据实验数据对本构模型的参数进行了标定。对Cazacu 2004屈服准则进行了改进，描述了脉冲电流作用下的屈服行为，其中拉伸-压缩不对称性随着塑性应变的增加而不断变化。对AZ31B镁合金进行了不同频率脉冲电流辅助下的三点弯曲试验。利用用户材料子程序VUMAT将改进的本构模型和屈服准则嵌入ABAQUS中，进行相应的三点弯曲仿真。研究发现，考虑电流频率和拉压不对称的改进本构模型和屈服准则能明显提高模拟精度。图形抽象

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来源期刊

International Journal of Material Forming ENGINEERING, MANUFACTURING-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

5.10

自引率

4.20%

发文量

审稿时长

>12 weeks

期刊介绍： The Journal publishes and disseminates original research in the field of material forming. The research should constitute major achievements in the understanding, modeling or simulation of material forming processes. In this respect ‘forming’ implies a deliberate deformation of material. The journal establishes a platform of communication between engineers and scientists, covering all forming processes, including sheet forming, bulk forming, powder forming, forming in near-melt conditions (injection moulding, thixoforming, film blowing etc.), micro-forming, hydro-forming, thermo-forming, incremental forming etc. Other manufacturing technologies like machining and cutting can be included if the focus of the work is on plastic deformations. All materials (metals, ceramics, polymers, composites, glass, wood, fibre reinforced materials, materials in food processing, biomaterials, nano-materials, shape memory alloys etc.) and approaches (micro-macro modelling, thermo-mechanical modelling, numerical simulation including new and advanced numerical strategies, experimental analysis, inverse analysis, model identification, optimization, design and control of forming tools and machines, wear and friction, mechanical behavior and formability of materials etc.) are concerned.