Abstract
Porous aluminum (Al) is a lightweight with high energy absorption properties and expected as structural materials. In this study, porous Al core filled in Al pipe composite material (porous core pipe) was fabricated by friction welding. Precursor of porous Al was fabricated by mixing the Al plates and blowing agent powder by friction stir welding. Precursor was put into the Al pipe, and rotating tool was pressed into the precursor. Then, bonding Al precursor to Al pipe can be conducted. Porous core pipe with metal bonding was successfully fabricated by heating the precursor. By using X-ray CT, pore structures of porous Al was observed.