[1] [1] Shen Xiaolong. The research on laser welding quality of high strength steel [D]. Changsha: Hunan University, 2006. 5～7

[2] [2] Wu Qiang, Chen Genyu, Wang Gui et al.. CO2 laser welding of zinc coated high strength steel [J]. Chinese J. Lasers, 2006, 33(8):1133～1138

[3] [3] Qiang Wu, Jinke Gong, Genyu Chen. Research on laser welding of vehicle body [J]. Optics & Laser Technology, 2008, 40(2):420～426

[4] [4] Zhang Jingbin, Ma Zhongwei, Xun Changtao et al.. Application & development of high-power laser welding [J]. Hot Working Technology, 2005, (3):64～67

[5] [5] Liu Kun, Liu Jinhe, Zhou Chang. Control of laser induced plasma during laser penetration welding [J]. Hot Working Technology, 2007, 36(23):86～88