[1] SONG L J, BAGAVATH-SINGH V, DUTTA B, et al.Control of melt pool temperature and deposition height during direct metal deposition process［J］.The International Journal of Advanced Manufacturing Technology, 2012, 58(1-4): 247-256.

[2] LIU J, LI L.Direct fabrication of thin-wall parts by laser cladding［J］.Journal of Manufacturing Processes, 2006, 8(1): 1-7.

[3] LIU J, LI L.Study on cross-section clad profile in coaxial single-pass cladding with a low-power laser［J］.Optics & Laser Technology, 2005, 37(6): 478-482.

[4] XIONG J, ZHANG G, GAO H, et al.Modeling of bead section profile and overlapping beads with experimental validation for robotic GMAW-based rapid manufacturing［J］.Robotics and Computer Integrated Manufacturing, 2013, 29(2): 417-423.

[5] CAO Y, ZHU S, LIANG X, et al.Overlapping model of beads and curve fitting of bead section for rapid manufacturing by robotic MAG welding process［J］.Robotics and Computer-Integrated Manufacturing, 2011, 27(3): 641-645.

[6] ZHOU C, ZHAO S, WANG Y, et al.Mitigation of pores generation at overlapping zone during laser cladding［J］.Journal of Materials Processing Technology, 2015, 216(1): 369-374.

[7] LIN J, HWANG B C.Coaxial laser cladding on an inclined substrate［J］.Optics & Laser Technology, 1999, 31(8): 571-578.

[8] ZHU G, LI D, ZHANG A, et al.The influence of laser and powder defocusing characteristics on the surface quality in laser direct metal deposition［J］.Optics & Laser Technology, 2012, 44(2): 349-356.

[9] LIU J, LI L.Effects of powder concentration distribution on fabrication of thin-wall parts in coaxial laser cladding［J］.Optics & Laser Technology, 2005, 37(4): 287-292.