Kai-hang Zhu, Yong-zhen Liang, Liu-kai Li, Ting-ting Zhang, Wen-xian Wang
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Effect of temperature compensation on properties and interfacial structure evolution of Al/CFRTP ultrasonic welded joints
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.
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..
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