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Okada T.,UACJ UACJ Corporation | Uchida S.,Osaka University | Uchida S.,Osaka Institute of Technology | Nakata K.,Osaka University
Keikinzoku Yosetsu/Journal of Light Metal Welding and Construction | Year: 2015

We have proposed a novel joining process, Friction Lap Joining (FLJ) to join metallic material sheet directly to polymer sheet and have investigated mechanical and metallurgical properties of these dissimilar joints. It was described in this paper that joining mechanism was discussed with the evaluation of TEM microstructure at the joint interface between A2017 aluminum alloy and 2 kinds of polymer, ethylene-acrylic acid copolymer (EAA), and high density polyethylene (PE). EAA sheet was easily joined to an as-received aluminum alloy sheet by FLJ, because EAA had a polar functional group, COOH. On the contrary, PE was not able to be joined to an as-received aluminum alloy, because PE had no polar functional group. However, anodizing of aluminum alloy was effective to join these materials by the assistance of the anchor effect.

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