| [1] | LI Y J. The welding technology of light metal[M]. Beijing: National Defense Industry Press, 2011: 72-152(in Chinese). |
| [2] | SEIJI K, YOUSUKE K, MASAMI M. Elucidation of laser welding phenomena and factors affecting weld penetration and welding de- fects[J]. Physics Procedia, 2010,B5:9-17. |
| [3] | LI Y J, WANG J, LIU Q. Nonferrous metals welding and application[M].Beijing: Chemical Industry Press, 2006: 310-313(in Chinese). |
| [4] | LI H, QIAN M, LI D. The effect of intermetallic compounds on laser weldability of dissimilar metal joint between magnesium alloy AZ31B and aluminum alloy 6061[J]. Laser Journal, 2007, 28(5): 61-63(in Chinese). |
| [5] | LIU Sh H, LIU J L, LIU H, et al. AZ91 magnesium alloy welding based on YAG pulsed laser[J]. Laser Technology, 2010, 34(4): 459-462(in Chinese). |
| [6] | WAHBA M, MIZUTANI M, KAWAHITO Y, et al. Laser welding of die-cast AZ91D magnesium alloy[J]. Materials & Design,2012, 33(5):69-576. |
| [7] | YU Y C, WANG C M, HU X Y. Porosity in fiber laser formation of 5A06 aluminum alloy[J]. Journal of Mechanical Science and Technology, 2010, 24(5): 1077-1082. |
| [8] | WANG Z M, GAO M, TANG H G, et al. Characterization of AZ31B wrought magnesium alloy joints welded by high power fiber laser[J]. Materials Characterization, 2011, 62(10): 943-951. |
| [9] | CAO X, JAHAZI M, IMMARIGEON J P, et al. A review of laser welding techniques for magnesium alloys[J]. Journal of Materials Processing Technology, 2006, 171(2): 188-204. |
| [10] | GONG S L, YAO W, SHI S. Porosity formation mechanisms and controlling technique for laser penetration welding of aluminum alloy[J]. Transactions of the China Welding Institution, 2009, 30(1): 60-62(in Chinese). |
| [11] | MA Zh H, CHEN D G, LI N, et al. Analysis of porosity characteristics of 5052 aluminum alloy welded by hybrid CO2 laser-MIG welding[J]. Laser Technology, 2012, 36(6): 780-782(in Chinese). |
| [12] | NIU R F, LIN B H, WANG Y N, et al. Evaporation loss of Mg element in pulsed laser welding of 5A05 aluminum alloy and distribution of micro-hardness of welding joint[J]. Transactions of the China Welding Institution, 2010, 31(3): 81-84(in Chinese). |
| [13] | SHAN J G, ZHANG J, ZHENG S Q, et al. Experimental study on pores in laser welding of magnesium alloys[J]. Rare Metal Materials and Engineering, 2009, 38(s3): 234-239(in Chinese). |
| [14] | SHAN J G, ZHANG J, ZHENG S Q, et al. Experimental study on the reason of pore formation in laser welding of die-cast magnesium alloy[J]. Acta Metallurgica Sinica, 2009, 45(8): 1006-1012(in Chinese). |
| [15] | ZHANG J, SHAN J G, WEN P, et al. Formation regularity of pores during laser welding of die-cast magnesium alloys and its mechanism[J]. Chinese Journal of Lasers,2011,38(6):0603006(in Chinese). |
| [16] | ZOU J S. The principles and technology of material connection[M]. Harbin: Harbin Institute of Technology Press, 2005: 63-64(in Chinese). |