[1] [1] Cai Zhigang, Song Guofeng, Lin Lifang, et al.. Foundation of thickness model of large and gradual-change thin-wall part[J]. Machinery Design & Manufacture, 2008, (5): 49-50.

[2] [2] Li Dichen, Wu Haihua, Lu Bingheng. Shaping method of hollow turbine blades with intergral shell and core ceramic mold[J]. Aircraft technology, 2009, (3): 38-42.

[3] [3] Wang Huaming. Open defense manufacturing high performance metal components to add material manufacturing technology a new chapter [J]. Defense Manufacturing Technology, 2013, 6(3): 5-7.

[4] [4] Gu D D, Meiners W, Wissenbach K, et al.. Laser additive manufacturing of metallic components: Materials, processes and mechanisms [J]. International Materials Reviews, 2012, 57(3): 133-164.

[5] [5] Dutta B, Singh V, Natu H, et al.. Direct metal deposition[J]. Advanced Materials & Processes, 2009, 167(3): 29-31.

[6] [6] Pi G, Zhang A F, Zhu G X, et al.. Research on the forming process of three-dimensional metal parts fabricated by laser direct metal forming [J]. International Journal of Advanced Manufacturing Technology, 2011, 57(9): 841-847.

[7] [7] Huang Weidong, Lin Xin, Chen Jing, et al.. Laser Additive Manufacturing[M]. Xi′an: Northwestern Polytechnical University Press, 2007: 1-12.

[8] [8] Cao J, Liu F C, Lin X, et al.. Effect of overlap rate on recrystallization behaviors of laser solid formed Inconel 718 superalloy[J]. Optics & Laser Technology, 2013, 45(2): 228-235.

[9] [9] He B, Li D C, Zhang A F, et al.. Influence of scanning pattern on the edge collapse of solid parts in laser metal direct forming[J]. Optics & Laser Technology, 2013, 48(6): 171-177.

[10] [10] Wang Lifang, Zhu Gangxian, Shi Shihong, et al.. Protect the feeding nozzle air pressure inside the light powder flow field impact study [J]. Chinese J Lasers, 2013, 40(s1): s103007.

[11] [11] Shi Gaolian, Shi Shihong, Wu Shaohua, et al.. Research on effective utilization rate of power in inside. 1aser coaxial powder feeding laser cladding and rapid prototyping process[J]. Hot Working Technology, 2010, 39(7): 152-161.

[12] [12] Shi Shihong, Fu Geyan, Wang Anjun, et al.. Laser Processing Forming Manufacturing Light in Powder Feeding Nozzle Technology and Light Inside: China, CN200610116413.1 [P]. 2006-10-11.

[13] [13] Zhu Gangxian, Zhang Anfeng, Li Dichen, et al.. Model of layer thickness of thin-walled parts in laser metal direct manufacturing[J]. Journal of Welding, 2010, 31(8): 57-60.

[14] [14] Zhu Gangxian, Shi Shihong, Fu Geyan, et al.. Realization and research of unequal-width cladding layers by using variable laser spot with the inside-laser powder feeding[J]. Applied Laser, 2015, 32(1): 25-28.