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Mechanism of bonding of AA7075 aluminum alloy and CFRP during friction assisted joining

机译：AA7075铝合金和CFRP摩擦辅助连接中的键合机理

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摘要

This work investigates the mechanism of bonding and the influence of the process parameters during Friction Assisted Joining of aluminum alloy AA7075 with carbon fiber reinforced PolyPhenylene Sulfide. Laser texturing was performed on the aluminum surface to promote mechanical interlocking between the metal and reinforced plastic substrates. The influence of the tool rotation speed, the plunging force, the plunging speed, and the texturing strategy on the quality of the joints was determined. The results indicated the feasibility of the process when texturized substrates were used. The mechanism of bonding was based on the mechanical interlocking between the aluminum texture and the ejected polymer matrix. Indeed, poor interaction between the texture and carbon fiber was observed regardless of the processing conditions involved. Nevertheless, the joints were characterized by high load-bearing capability (up to 10.7 kN). Besides, the process involved a short joining time (even 1 s) and required relatively low joining forces (almost 800 N).
机译：该工作研究了铝合金AA7075与碳纤维增强聚苯硫醚摩擦辅助连接期间工艺参数的粘合机制及其影响。在铝表面上进行激光纹理，以促进金属和增强塑料基材之间的机械互锁。测定了刀具转速，狭窄力，狭窄速度和纹理化策略对关节质量的影响。结果表明，使用纹理衬底时该方法的可行性。粘合机理基于铝质地和喷射聚合物基质之间的机械互锁。实际上，无论涉及的加工条件如何，都观察到纹理和碳纤维之间的相互作用差。然而，关节的特征在于高承载能力（高达10.7kN）。此外，该过程涉及短路接合时间（甚至是1秒），并且需要相对较低的接合力（近800n）。

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