2018 年 82 巻 2 号 p. 33-38
Aluminum pipes were fabricated from aluminum chips by a Friction Stir Back Extrusion (FSBE). In this process, aluminum chips were densified by material flow induced by a rotating tool plunged into the aluminum chips. It was found that aluminum pipes can be fabricated from aluminum chips by sufficient material flow with no pores and homogeneous thickness. Aluminum pipes fabricated from aluminum chips exhibited similar compression properties to those of aluminum pipes fabricated by a machining process.