Effect of temperature compensation on properties and interfacial structure evolution of Al/CFRTP ultrasonic welded joints

IF 2.5 2区材料科学 Journal of Iron and Steel Research International Pub Date : 2024-08-12 DOI:10.1007/s42243-024-01299-y

Kai-hang Zhu, Yong-zhen Liang, Liu-kai Li, Ting-ting Zhang, Wen-xian Wang

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Abstract

5052 Al and carbon fiber-reinforced polyamide 6 composite (CF-PA6) were jointed via ultrasonic welding with the assistance of temperature compensation device. The effects of the ultrasonic welding time and temperature compensation on the microstructure and mechanical properties of the joints were investigated. Through analysis of the wettability and fluidity of the molten carbon fiber-reinforced thermoplastic composites (CFRTP), the bonding mechanism and failure path of Al/CFRTP were clarified. The results show that under the conditions of temperature compensation of 220 °C and welding time of 1500 ms, the joint strength of the two components reaches 2480.4 N, which is 813.6% higher than that of Al/CFRTP components obtained at room temperature. Overall, temperature compensation prolonged the wetting time of molten CFRTP on the aluminum alloy surface. When the fluidity and wettability were coordinated with each other, a high-quality joint was formed. In addition, the ultrasonic welding process of Al/CFRTP mainly relies on “physical adsorption,” “diffusion effect,” and “mechanical locking effect” to achieve sufficient bonding, and the effect of hydrogen bonding is weak.

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温度补偿对 Al/CFRTP 超声波焊接接头性能和界面结构演变的影响

在温度补偿装置的辅助下，通过超声波焊接连接了 5052 Al 和碳纤维增强聚酰胺 6 复合材料（CF-PA6）。研究了超声波焊接时间和温度补偿对接头微观结构和机械性能的影响。通过分析熔融碳纤维增强热塑性复合材料（CFRTP）的润湿性和流动性，阐明了 Al/CFRTP 的粘接机理和失效路径。结果表明，在温度补偿为 220 ℃、焊接时间为 1500 ms 的条件下，两种成分的接头强度达到 2480.4 N，比室温下获得的 Al/CFRTP 成分的接头强度高 813.6%。总体而言，温度补偿延长了熔融 CFRTP 在铝合金表面的润湿时间。当流动性和润湿性相互协调时，就能形成高质量的接头。此外，铝/CFRTP 超声波焊接工艺主要依靠 "物理吸附"、"扩散效应 "和 "机械锁定效应 "实现充分粘合，氢键作用较弱。

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来源期刊

Journal of Iron and Steel Research International 工程技术-冶金工程

自引率

16.00%

发文量

161

审稿时长

2.8 months

期刊介绍： Publishes critically reviewed original research of archival significance Covers hydrometallurgy, pyrometallurgy, electrometallurgy, transport phenomena, process control, physical chemistry, solidification, mechanical working, solid state reactions, materials processing, and more Includes welding & joining, surface treatment, mathematical modeling, corrosion, wear and abrasion Journal of Iron and Steel Research International publishes original papers and occasional invited reviews on aspects of research and technology in the process metallurgy and metallic materials. Coverage emphasizes the relationships among the processing, structure and properties of metals, including advanced steel materials, superalloy, intermetallics, metallic functional materials, powder metallurgy, structural titanium alloy, composite steel materials, high entropy alloy, amorphous alloys, metallic nanomaterials, etc..