Departmental Bulletin Paper Dissimilar Materials Joining of AL Alloy/CFRTP by Friction Lap Joining

Nagatsuka, Kimiaki  ,  Nakata, Kazuhiro  ,  Tsukamoto, Masahiro  ,  Tsuchiya, Atsuki  ,  Bolyu, Xiao

44 ( 1 )  , pp.9 - 14 , 2015-06 , 大阪大学接合科学研究所 , Joining and Welding Research Institute, Osaka University , オオサカ ダイガク セツゴウ カガク ケンキュウジョ
Carbon fiber reinforced thermoplastics,which consisted of the polyamide 6 as the matrix and 20wt%carbon fiber,and A5052 plates were directly joined by the friction lap joining method.A continuous joined interface of A5052/CFRTP joint was obtained at various tool rotation speeds ranging from 1000 to 2500rmp.These materials were joined by bonding of MgO oxide layer of A5052 and PA6 as the matrix of the CFRTP.Voids were observed in the CFRTP at the interface of the joint,and its quantity increased with increasing tool rotation speed.The tensile shear fracture load of the FLJ joint increased with increasing the tool rotation speed from 1000 to 2000 rpm,and then it decreased.The fracture mainly occurred at the joint interface,however,some joints joined at the tool rotation speed of 2000 and 2500 rpm showed the CFRTP base plate fracture.

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