[1] National Standardization Techinical Committee for Additive Manufacturing,. Additive manufacturing—(2017).

[2] Yang Y H. Analysis of classifications and characteristic of additive manufacturing(3D print)[J]. Advances in Aeronautical Science and Engineering, 10, 309-318(2019).

[3] Wang H M. Materials' fundamental issues of laser additive manufacturing for high-performance large metallic components[J]. Acta Aeronautica et Astronautica Sinica, 35, 2690-2698(2014).

[4] Dou X H, An J W, Xu Y W[J]. Application and verification of 3D printing technology in forming and manufacturing of complex components of light alloy New Technology & New Process, 2015, 89-91.

[5] Cao M S. Discussion on lightweight technology of metal 3D printing based on SLM and its application[J]. Guangdong Sericulture, 52, 26-27(2018).

[6] Zhou S. The study and application on lightweight 3D metal printing based on selective laser melting technology[D]. Hangzhou: Zhejiang University, 1-68(2017).

[7] Zhang X J, Chueh Y H, Wei C et al. Additive manufacturing of three-dimensional metal-glass functionally gradient material components by laser powder bed fusion with in situ powder mixing[J]. Additive Manufacturing, 33, 101113(2020).

[8] Zhang D Y, Wang R Z, Zhao J Z et al. Latest advance of laser direct manufacturing of metallic parts[J]. Chinese Journal of Lasers, 37, 18-25(2010).

[9] Grasso M L, Colosimo B M. Process defects and in situ monitoring methods in metal powder bed fusion: a review[J]. Measurement Science and Technology, 28, 044005(2017).

[10] Gunenthiram V, Peyre P, Schneider M et al. Analysis of laser-melt pool-powder bed interaction during the selective laser melting of a stainless steel[J]. Journal of Laser Applications, 29, 022303(2017).

[11] Khairallah S A, Anderson A T, Rubenchik A et al. Laser powder-bed fusion additive manufacturing: physics of complex melt flow and formation mechanisms of pores, spatter, and denudation zones[J]. Acta Materialia, 108, 36-45(2016).

[12] Liu Y, Yang Y Q, Mai S Z et al. Investigation into spatter behavior during selective laser melting of AISI 316L stainless steel powder[J]. Materials & Design, 87, 797-806(2015).

[13] Anwar A. Quang-cuong P. Spattering in selective laser melting : a review of spatter formation, effects and countermeasures. [C]∥Proceedings of the 3rd International Conference on Progress in Additive Manufacturing, 541-546(2018).

[14] Wu S B, Dou W H, Yang Y Q et al. Research progress of inspection technology for addition manufacturing of SLM metal[J]. Journal of Netshape Forming Engineering, 11, 37-50(2019).

[15] Spears T G, Gold S A. In-process sensing in selective laser melting (SLM) additive manufacturing[J]. Integrating Materials and Manufacturing Innovation, 5, 16-40(2016).

[16] Repossini G, Laguzza V, Grasso M et al. On the use of spatter signature for in situ monitoring of Laser Powder Bed Fusion[J]. Additive Manufacturing, 16, 35-48(2017).

[17] Purtonen T, Kalliosaari A, Salminen A. Monitoring and adaptive control of laser processes[J]. Physics Procedia, 56, 1218-1231(2014).

[18] Sun Y, Gao X D. Laser welding keyhole and spatter shape analysis method[J]. Welding Technology, 43, 15-18(2014).

[19] Semak V V, Matsunawa A. The role of recoil pressure in energy balance during laser materials processing[J]. Journal of Physics D, 30, 2541-2552(1997).

[20] Ly S, Rubenchik A M, Khairallah S A et al. Metal vapor micro-jet controls material redistribution in laser powder bed fusion additive manufacturing[J]. Scientific Reports, 7, 4085(2017).

[21] Deng J Q, Shi R K, Zhang Y. Numerical simulation of behavior characteristics of laser induced plasma during deep penetration laser welding[J]. Applied Laser, 35, 58-63(2015).

[22] Li S, Chen G, Zhang M et al. Dynamic keyhole profile during high-power deep-penetration laser welding[J]. Journal of Materials Processing Technology, 214, 565-570(2014).

[23] Li S, Deng H, Zhang Y et al. Study on material evaporation and molten pool behavior induced by high power laser beam[J]. Electric Welding Machine, 46, 7-13, 18(2016).

[24] Wu D S, Hua X M, Li F et al. Understanding of spatter formation in fiber laser welding of 5083 aluminum alloy[J]. International Journal of Heat and Mass Transfer, 113, 730-740(2017).

[25] King W E, Barth H D, Castillo V M et al. Observation of keyhole-mode laser melting in laser powder-bed fusion additive manufacturing[J]. Journal of Materials Processing Technology, 214, 2915-2925(2014).

[26] Matthews M J, Guss G, Khairallah S A et al. Denudation of metal powder layers in laser powder bed fusion processes[J]. Acta Materialia, 114, 33-42(2016).

[27] Zhang M J, Chen G Y, Zhou Y et al. Observation of spatter formation mechanisms in high-power fiber laser welding of thick plate[J]. Applied Surface Science, 280, 868-875(2013).

[28] Cunningham R, Zhao C, Parab N et al. Keyhole threshold and morphology in laser melting revealed by ultrahigh-speed X-ray imaging[J]. Science, 363, 849-852(2019).

[29] Esmaeilizadeh R, Ali U, Keshavarzkermani A et al. On the effect of spatter particles distribution on the quality of Hastelloy X parts made by laser powder-bed fusion additive manufacturing[J]. Journal of Manufacturing Processes, 37, 11-20(2019).

[30] Ye D S, Zhu K P. Fuh J Y H, et al. The investigation of plume and spatter signatures on melted states in selective laser melting[J]. Optics & Laser Technology, 111, 395-406(2019).

[31] Yadroitsev I, Gusarov A, Yadroitsava I et al. Single track formation in selective laser melting of metal powders[J]. Journal of Materials Processing Technology, 210, 1624-1631(2010).

[32] Furumoto T, Egashira K, Munekage K et al. Experimental investigation of melt pool behaviour during selective laser melting by high speed imaging[J]. CIRP Annals, 67, 253-256(2018).

[33] Taheri Andani M, Dehghani R. Karamooz-Ravari M R, et al. Spatter formation in selective laser melting process using multi-laser technology[J]. Materials & Design, 131, 460-469(2017).

[34] Wang D, Wu S B, Fu F et al. Mechanisms and characteristics of spatter generation in SLM processing and its effect on the properties[J]. Materials & Design, 117, 121-130(2017).

[35] Gunenthiram V, Peyre P, Schneider M et al. Experimental analysis of spatter generation and melt-pool behavior during the powder bed laser beam melting process[J]. Journal of Materials Processing Technology, 251, 376-386(2018).

[36] Bidare P, Bitharas I, Ward R M et al. Fluid and particle dynamics in laser powder bed fusion[J]. Acta Materialia, 142, 107-120(2018).

[37] Zheng H, Li H X, Lang L H et al. Effects of scan speed on vapor plume behavior and spatter generation in laser powder bed fusion additive manufacturing[J]. Journal of Manufacturing Processes, 36, 60-67(2018).

[38] Yin J, Yang L L, Yang X et al. High-power laser-matter interaction during laser powder bed fusion[J]. Additive Manufacturing, 29, 100778(2019).

[39] Yin J, Wang D Z, Yang L L et al. Correlation between forming quality and spatter dynamics in laser powder bed fusion[J]. Additive Manufacturing, 31, 100958(2020).

[40] Bruna-Rosso C, Demir A G, Previtali B. Selective laser melting finite element modeling: validation with high-speed imaging and lack of fusion defects prediction[J]. Materials & Design, 156, 143-153(2018).

[41] Panwisawas C, Qiu C L, Anderson M J et al. mesoscale modelling of selective laser melting: thermal fluid dynamics and microstructural evolution[J]. Computational Materials Science, 126, 479-490(2017).

[42] Qiu C L, Panwisawas C, Ward M et al. On the role of melt flow into the surface structure and porosity development during selective laser melting[J]. Acta Materialia, 96, 72-79(2015).

[43] Zhirnov I, Kotoban D V, Gusarov A V. Evaporation-induced gas-phase flows at selective laser melting[J]. Applied Physics A, 124, 1-9(2018).

[44] Shi R P, Khairallah S, Heo T W et al. Integrated simulation framework for additively manufactured Ti-6Al-4V: melt pool dynamics, microstructure, solid-state phase transformation, and microelastic response[J]. JOM, 71, 3640-3655(2019).

[45] King W E, Anderson A T, Ferencz R M et al. Laser powder bed fusion additive manufacturing of metals; physics, computational, and materials challenges[J]. Applied Physics Reviews, 2, 041304(2015).

[46] Gu D D, Dai D H, Xia M J et al. Cross-scale physical mechanisms for structure and performance control of metal components processed by selective laser melting additive manufacturing[J]. Journal of Nanjing University of Aeronautics & Astronautics, 49, 645-652(2017).

[47] Simonelli M, Tuck C, Aboulkhair N T et al. Astudy on the laser spatter and the oxidation reactions during selective laser melting of 316L stainless steel, Al-Si10-Mg, and Ti-6Al-4V[J]. Metallurgical and Materials Transactions A, 46, 3842-3851(2015).

[48] Rao X W, Gu D D, Xi L X. Forming mechanism and mechanical properties of carbon nanotube reinforced aluminum matrix composites by selective laser melting[J]. Journal of Mechanical Engineering, 55, 1-9(2019).

[49] Yao Y S, Wang J, Chen Q B et al. Research status of defects and defect treatment technology for laser additive manufactured products[J]. Laser & Optoelectronics Progress, 56, 100004(2019).

[50] Zhang X Y, Li X B, Tan Z et al. Microstructure and mechanical properties of water atomized Cu-l0Sn alloy powder formed parts by selective laser melting[J]. Chinese Journal of Lasers, 45, 1002009(2018).

[51] Vilaro T, Colin C, Bartout J D. As-fabricated and heat-treated microstructures of the Ti-6Al-4V alloy processed by selective laser melting[J]. Metallurgical and Materials Transactions A, 42, 3190-3199(2011).

[52] Qiu C L. Adkins N J E, Attallah M M. Microstructure and tensile properties of selectively laser-melted and of HIPed laser-melted Ti-6Al-4V[J]. Materials Science and Engineering: A, 578, 230-239(2013).

[53] Thijs L, Verhaeghe F, Craeghs T et al. A study of the microstructural evolution during selective laser melting of Ti-6Al-4V[J]. Acta Materialia, 58, 3303-3312(2010).

[54] Panwisawas C, Qiu C L, Sovani Y et al. On the role of thermal fluid dynamics into the evolution of porosity during selective laser melting[J]. Scripta Materialia, 105, 14-17(2015).

[55] Martin A A, Calta N P, Khairallah S A et al. Dynamics of pore formation during laser powder bed fusion additive manufacturing[J]. Nature Communications, 10, 1987(2019).

[56] Pan A Q, Zhang H, Wang Z M. Process parameters and microstructure of Ni-based single crystal superalloy processed by selective laser melting[J]. Chinese Journal of Lasers, 46, 1102007(2019).

[57] Zhu M L, Xuan F Z. Fatigue crack initiation potential from defects in terms of local stress analysis[J]. Chinese Journal of Mechanical Engineering, 27, 496-503(2014).

[58] Miao Q Y, Liu M R, Zhao K et al. Research progress on technologies of additive manufacturing of aluminum alloys[J]. Laser & Optoelectronics Progress, 55, 011405(2018).

[59] Wang D, Ye G Z, Dou W H et al. Influence of spatter particles contamination on densification behavior and tensile properties of CoCrW manufactured by selective laser melting[J]. Optics & Laser Technology, 121, 105678(2020).

[60] Tang M, Pistorius P C. Oxides, porosity and fatigue performance of AlSi10Mg parts produced by selective laser melting[J]. International Journal of Fatigue, 94, 192-201(2017).

[61] Alkahari M R, Furumoto T, Ueda T et al. Meltpool and single track formation in selective laser sintering/selective laser melting[J]. Advanced Materials Research, 933, 196-201(2014).

[62] Anwar A B, Pham Q C. Study of the spatter distribution on the powder bed during selective laser melting[J]. Additive Manufacturing, 22, 86-97(2018).

[63] Anwar A B, Ibrahim I H, Pham Q C. Spatter transport by inert gas flow in selective laser melting: a simulation study[J]. Powder Technology, 352, 103-116(2019).

[64] Bidare P, Bitharas I, Ward R M et al. Manufacture, 130/131, 65-72(2018).

[65] Scipioni Bertoli U, Guss G, Wu S et al. In-situ characterization of laser-powder interaction and cooling rates through high-speed imaging of powder bed fusion additive manufacturing[J]. Materials & Design, 135, 385-396(2017).

[66] Nandwana P, Peter W H, Dehoff R R et al. Recyclability study on Inconel 718 and Ti-6Al-4V powders for use in electron beam melting[J]. Metallurgical and Materials Transactions B, 47, 754-762(2016).

[67] Lott P, Schleifenbaum H, Meiners W et al. Design of an optical system for the in situ process monitoring of selective laser melting (SLM)[J]. Physics Procedia, 12, 683-690(2011).

[68] Lu R S, Wu A, Zhang T D et al. Review on automated optical (visual) inspection and its applications in defect detection[J]. Acta Optica Sinica, 38, 0815002(2018).

[69] Zhao C, Fezzaa K, Cunningham R et al. Real-time monitoring of laser powder bed fusion process using high-speed X-ray imaging and diffraction[J]. Scientific Reports, 7, 3602-3611(2017).

[70] Leung C L A, Marussi S, Atwood R C et al. In situ X-ray imaging of defect and molten pool dynamics in laser additive manufacturing[J]. Nature Communications, 9, 1355(2018).

[71] Ye D S. Hsi Fuh J Y, Zhang Y J, et al. In situ monitoring of selective laser melting using plume and spatter signatures by deep belief networks[J]. ISA Transactions, 81, 96-104(2018).

[72] Zhang Y J, Hong G S, Ye D S et al. Extraction and evaluation of melt pool, plume and spatter information for powder-bed fusion AM process monitoring[J]. Materials & Design, 156, 458-469(2018).

[73] Yuan B D, Giera B, Guss G et al. Semi-supervised convolutional neural networks for in situ video monitoring of selective laser melting[C]∥2019 IEEE Winter Conference on Applications of Computer Vision (WACV). 7-11 Jan. 2019, Waikoloa, 744-753(2019).

[74] Bidare P. Maier R R J, Beck R J, et al. An open-architecture metal powder bed fusion system for in situ process measurements[J]. Additive Manufacturing, 16, 177-185(2017).