Modeling and characterization on electroplastic effect during dynamic deformation of 5182-O aluminum alloy

IF 4.7 1区材料科学 Q1 METALLURGY & METALLURGICAL ENGINEERING

Transactions of Nonferrous Metals Society of China Pub Date : 2024-08-01 DOI:10.1016/S1003-6326(24)66553-2

Hong-chun SHANG, Song-chen WANG, Yan-shan LOU

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Abstract

The coupling effects of electrical pulse, temperature, strain rate, and strain on the flow behavior and plasticity of 5182-O aluminum alloy were investigated and characterized. The isothermal tensile test and electrically-assisted isothermal tensile test were performed at the same temperature, and three typical models were further embedded in ABAQUS/Explicit for numerical simulation to illustrate the electroplastic effect. The results show that electric pulse reduces the deformation resistance but enhances the elongation greatly. The calibration accuracy of the proposed modified Lim−Huh model for highly nonlinear and coupled dynamic hardening behavior is not much improved compared to the modified Kocks−Mecking model. Moreover, the artificial neural network model is very suitable to describe the macromechenical response of materials under the coupling effect of different variables.

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5182-O 铝合金动态变形过程中的电塑性效应建模与表征

研究并表征了电脉冲、温度、应变率和应变对 5182-O 铝合金流动行为和塑性的耦合效应。在相同温度下进行了等温拉伸试验和电辅助等温拉伸试验，并进一步将三个典型模型嵌入 ABAQUS/Explicit 中进行数值模拟，以说明电塑性效应。结果表明，电脉冲降低了变形阻力，但大大提高了伸长率。与修正的 Kocks-Mecking 模型相比，针对高度非线性和耦合动态硬化行为提出的修正 Lim-Huh 模型的校准精度提高不多。此外，人工神经网络模型非常适合描述不同变量耦合效应下材料的宏观力学响应。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Transactions of Nonferrous Metals Society of China 工程技术-冶金工程

CiteScore

7.40

自引率

17.80%

发文量

8456

审稿时长

3.6 months

期刊介绍： The Transactions of Nonferrous Metals Society of China (Trans. Nonferrous Met. Soc. China), founded in 1991 and sponsored by The Nonferrous Metals Society of China, is published monthly now and mainly contains reports of original research which reflect the new progresses in the field of nonferrous metals science and technology, including mineral processing, extraction metallurgy, metallic materials and heat treatments, metal working, physical metallurgy, powder metallurgy, with the emphasis on fundamental science. It is the unique preeminent publication in English for scientists, engineers, under/post-graduates on the field of nonferrous metals industry. This journal is covered by many famous abstract/index systems and databases such as SCI Expanded, Ei Compendex Plus, INSPEC, CA, METADEX, AJ and JICST.