[1] [1] ZENG L H, LIU J C.Development analysis of metal 3D printing technology［J］.Mechanical Engineer, 2016(3): 42-44.

[2] [2] DEBROY T, WEI H L, ZUBACK J S, et al.Additive manufacturing of metallic components-process, structure and properties［J］.Progress in Materials Science, 2018(92): 112-224.

[3] [3] LI D C, SU Q, LU B H.Additive manufacturing-tool for innovation and entrepreneurship［J］.Aeronautical Manufacturing Technology, 2015(10): 38-43.

[4] [4] ZHANG S Y.Research on micorstructures and properties of Ti-6Al-4V titanium alloy in laser rapid forming processing［D］.Xi'an: Northwestern Polytechnical University 2006.

[5] [5] LIU F C, HE L H, LIN X, et al.Study on Microstructure and Mechanical Properties of Arc Deposition Manufactured TC4 Titanium Alloy［J］.Hot Working Technology, 2014(10): 1-5.

[6] [6] ZHAO J F, MA Z Y, XIE D Q, et al.Metal additive manufacturing technique［J］.Journal of Nanjing University of Aeronautics & Astronautics, 2014, 46(5): 675-683.

[7] [7] BOYER R R.An overview on the use of titanium in the aerospace industry［J］.Materials Science & Engineering A, 1996, 213 (1-2): 103-114.

[8] [8] HAO X N.Difference analysis between laser additive manufacturing and conventional forging and casting［J］.Aeronautical Manufacturing Technology, 2017(5): 82-86.

[9] [9] MURR L E, QUINONES S A, GAYTAN S M, et al.Microstructure and mechanical behavior of Ti-6Al-4V produced by rapid-layer manufacturing, for biomedical applications［J］.Journal of the Mechanical Behavior of Biomedical Materials, 2009, 2(1): 20-32.

[10] [10] GNTHER J, KREWERTH D, LIPPMANN T, et al.Fatigue life of additively manufactured Ti-6Al-4V in the very high cycle fatigue regime［J］.International Journal of Fatigue, 2017(94): 236-245.

[11] [11] LU Y, ZHAO J B, QIAO H C.Investigation of technical and strengthening mechanism research of TiAl alloy by laser shock peening［J］.Chinese Journal of Lasers, 2014, 41(10): 119-124.

[12] [12] ZABEEN S, PREUSS M, WITHERS P J.Residual stresses caused by head-on and 45°foreign object damage for a laser shock peened Ti-6Al-4V alloy aerofoil［J］.Materials Science & Engineering A, 2013(560): 518-527.

[13] [13] LI D L, HE W F, YOU X, et al.Experimental research on improving fatigue strength of wounded TC4 titanium alloy by laser shock peening［J］.Chinese Journal of Lasers, 2016, 43 (7): 116-124.

[14] [14] KALENTICS N, BOILLAT E, PEYRE P, et al.3D laser shock peening-a new method for the 3D control of residual stresses in selective laser melting［J］.Materials & Design, 2017(130): 350-356.

[15] [15] SPIERINGS A B, SCHNEIDER M, EGGENBERGER R.Comparison of density measurement techniques for additive manufactured metallic parts［J］.Rapid Prototyping Journal, 2011, 17(5): 380-386.

[16] [16] HU Z Y.Research on shot peening technology of TB6 titanium alloy［D］.Nanjing: Nanjing University of Aeronautics and Astronautics, 2013.

[17] [17] HUAI Y Y, ZHAO J B, QIAO H C et al.Investigation of laser shock peening on the surface integrity of Ti17 thin-walled titanium alloy［J］.Modular Machine Tool & Automatic Manufacturing Technique, 2017(12): 73-77.

[18] [18] YANG G, WANG B, QIN L Y, et al.Study on microstructure and properties of laser deposition additive manufacturing and wire and arc additive manufacturing TC4 titanium alloy［J］.Chinese Journal of Rare Metals, 2017: 1-6.

[19] [19] YANG G, WANG W D, QIN L Y, et al.Effect of α + β phase zone annealing on microstructure and microhardness of laser deposition manufactured TA15 titanium alloy ［J］.Heat Treatment of Metals, 2017(12): 39-43.

[20] [20] WEN Y.Research on microstructure and defects of two-phase titanium alloy with 3D printing［D］.Nanchang: Nanchang Hangkong University, 2016.

[21] [21] WANG M, LIN X, HUANG W.Laser additive manufacture of titanium alloys［J］.Materials & Processing Report, 2015, 31(2): 90-97.

[22] [22] WAN Z P, WANG C, JIANG W T, et al.On the effect of void defects on stress distribution of Ti-6Al-4V alloy fatigue specimen in 3D printing［J］.Journal of Experimental Mechanics, 2017(1): 1-8.

[23] [23] ZHANG F Y, CHEN J, TAN H, et al.Research on forming mechanism of defects in laser rapid formed titanium alloy［J］.Rare Metal Materials and Engineering, 2007(2): 211-215.

[24] [24] JING X.Effects of laser shock peening on mechanical properties, microstructure in austenitic stainless steel cladding coating/welding zone and defect detection［D］.Zhenjiang: Jiangsu University, 2016.