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Fabrication of Aluminum Foam-Filled Thin-Wall Steel Tube by Friction Welding and Its Compression Properties

机译：铝泡沫填充薄壁钢管的摩擦焊接制备及其压缩性能

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摘要

Aluminum foam has received considerable attention in various fields and is expected to be used as an engineering material owing to its high energy absorption properties and light weight. To improve the mechanical properties of aluminum foam, combining it with dense tubes, such as aluminum foam-filled tubes, was considered necessary. In this study, an aluminum foam-filled steel tube, which consisted of ADC12 aluminum foam and a thin-wall steel tube, was successfully fabricated by friction welding. It was shown that a diffusion bonding layer with a thickness of approximately 10 μm was formed, indicating that strong bonding between the aluminum foam and the steel tube was realized. By the X-ray computed tomography observation of pore structures, the fabrication of an aluminum foam-filled tube with almost uniform pore structures over the entire specimen was confirmed. In addition, it was confirmed that the aluminum foam-filled steel tube exhibited mechanical properties superior to those of the ADC12 aluminum foam and steel tube. This is considered to be attributed to the combination of the aluminum foam and steel tube, which particularly prevents the brittle fracture and collapse of the ADC12 foam by the steel tube, along with the strong metal bonding between the aluminum foam and the steel tube.
机译：泡沫铝由于其高的能量吸收性能和轻的重量而在各个领域受到相当大的关注，并有望用作工程材料。为了改善泡沫铝的机械性能，认为必须将其与致密管如泡沫铝填充管组合。在这项研究中，通过摩擦焊接成功地制造了由ADC12泡沫铝和薄壁钢管组成的泡沫铝钢管。结果表明，形成了厚度约为10μm的扩散结合层，表明实现了泡沫铝和钢管之间的牢固结合。通过X射线计算机断层摄影术观察孔结构，证实了整个样品中孔结构几乎均匀的泡沫铝填充管的制造。另外，证实了泡沫铝填充钢管表现出优于ADC12泡沫铝和钢管的机械性能。认为这归因于铝泡沫和钢管的组合，其特别防止了钢管引起的ADC12泡沫的脆性断裂和塌陷，以及铝泡沫和钢管之间的牢固的金属结合。

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