3T Otani,K Sasabe.Characteristics of resistance spot welds of ultrafine-grained high-strength steel sheets[J].Welding International.2004(5)
4M.Niikura,M.Fujioka,Y.Adachi,et al.New concepts for ultra refinement of grain size in Super Metal Project[].Journal of Materials.2001
5Hideki Hamatani,YasunobuMiyazaki,Tadayuki Otani,et al.Minimization of heat-affected zone size in welded ultra-fine grained steel under cooling by liquid nitrogen during laser welding[].Journal of Materials Science.2006
6HaiQIU,Akio OHMORI and Yukito HAGIWARA.Mechani-cal properties of welded joints of780MPa grade ultra-fine grained steels[].ISIJ International.2003
7Li Y B,Lin Z Q,Hu Jack S,et al.Numerical analysis of mag-netic fluid dynamics behaviors during resistance spot welding[].Journal of Applied Physics.2007
2Kuziak R, Kawalla R, Waengler S. Advanced high strength steels for automotive industry [J]. Archives of Civil and Mechanical Engineering, 2008,8(2): 103-117.