Study on Effects of Pulsed Current Treatment on Ultrasonic Welded Joint of Al5052-H32 Alloy

IF 3.4 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Advanced Engineering Materials Pub Date : 2024-11-18 DOI:10.1002/adem.202401104

Mingming Ren, Yongfang Li, Hao Chen, Sha Xu, Ruoping Zhang, Yali Yang

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引用次数: 0

Abstract

The effect of pulse current on the mechanical properties of ultrasonic welded joints of 5052-H32 aluminum alloy (Al5052-H32) plate with a thickness of 2 mm is investigated experimentally. First, ultrasonic lap welding is performed to prepare the welded joint. Then, the pulsed current with different current densities and durations is applied to the welded joint. The impact of pulsed current on the properties of the welded joints is evaluated through tensile lap shear testing, observation using a metallographic microscope, and hardness testing. In the results, it is indicated that the tensile lap shear strength, elongation, and hardness of the welded joints can be improved by applying pulsed current properly. However, excessive input of electrical energy can lead to a decrease in the mechanical properties of the welded joints. Compared to the joint without pulse current treatment, the microstructure shows significant healing of the weld seam under the action of pulsed current. The feasibility of enhancing the mechanical performance of ultrasonically welded joints through the utilization of pulsed current is highlighted by these findings.

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脉冲电流处理对 Al5052-H32 合金超声波焊接接头影响的研究

实验研究了脉冲电流对厚度为 2 毫米的 5052-H32 铝合金（Al5052-H32）板超声波焊接接头机械性能的影响。首先，进行超声波搭接焊以制备焊点。然后，向焊点施加不同电流密度和持续时间的脉冲电流。通过拉伸搭接剪切测试、金相显微镜观察和硬度测试，评估了脉冲电流对焊点性能的影响。结果表明，适当应用脉冲电流可以提高焊接接头的拉伸搭接剪切强度、伸长率和硬度。然而，过多的电能输入会导致焊点机械性能下降。与未经过脉冲电流处理的焊点相比，在脉冲电流的作用下，焊缝的微观结构出现了明显的愈合。这些发现凸显了利用脉冲电流提高超声波焊接接头机械性能的可行性。

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

Advanced Engineering Materials 工程技术-材料科学：综合

CiteScore

5.70

自引率

5.60%

发文量

544

审稿时长

1.7 months

期刊介绍： Advanced Engineering Materials is the membership journal of three leading European Materials Societies - German Materials Society/DGM, - French Materials Society/SF2M, - Swiss Materials Federation/SVMT.