1. 1) Japanese Industrial Standards Committee: JIS Z 3607 Recommended practice for friction welding of carbon steel, (1994). (in Japanese)
2. 2) K. Katoh, H. Tokisue: Effect of inclination angle of faying surface on the mechanical properties of friction welded joints of 5052 aluminum alloy, Journal of Japan Institute of Light Metals, 49-11 (1999), 553-558. (in Japanese)
3. 3) M. Kimura, H. Mioh, M. Kusaka, K. Seo, A. Fuji: Observation of the Joining Phenomena in First Phase of Friction Welding - Study of Joining Mechanism of Friction Welding (Report 1) -, Quarterly Journal of the Japan Welding Society, 20-4 (2002), 559-565. (in Japanese)
4. 4) K. Okita, W. Kishimoto: Studies on Friction Welding of SUS 304 Austenitic Stainless (Report 1) - Charpy Absorbed Energy of Friction Welded Joint -, Journal of the Japan Welding Society, 48-11 (1979), 991-995. (in Japanese)
5. 5) A. Ishibashi, S. Ezoe, S. Tanaka: Studies on Friction Welding of Carbon and Alloy Steels: 3rd Report, Adequate Welding Conditions for High Alloy Steels and Distribution of Alloy Elements near Weld Interface, Transactions of the Japan Society of Mechanical Engineers: C, 48-434 (1982), 1588-1597. (in Japanese)