1. Thomas WM, Needham ED, Murch MG, Temple-Smith P, Dawes CJ (1995) Friction stir butt welding. US Patent 5,460,317, 6 December 1995
2. Biallas G, Braun R, Donne CD, Staniek G, Kaysser WA (1999) Mechanical properties and corrosion behavior of friction stir welds 2024-T6. First international conference on friction stir welds, Thousand Oaks, CA
3. Nowak BM, Hall AC, Khrovsky GA (2003) 6th international trends in welding research conference proceedings. ASM International, pp 224–228
4. Bussu G, Irving PE (2003) Role of residual stress and heat affected zone properties on fatigue crack propagation in friction stir welding 2024-T351 aluminum joints. Int J Fatigue 25:77–88
5. Muthukumaran S, Mukherjee SK (2006) Two modes of metal flow phenomenon in friction stir welding process. Sci Technol Weld Joi 11:337–340