[2] Lu B H, Li D C, Tian X Y. Development trends in additive manufacturing and 3D printing[J]. Engineering, 1, 85-89(2015).
[3] Lewandowski J J, Seifi M. Metal additive manufacturing: a review of mechanical properties[J]. Annual Review of Materials Research, 46, 151-186(2016).
[4] Ngo T D, Kashani A, Imbalzano G et al. Additive manufacturing (3D printing): a review of materials, methods, applications and challenges[J]. Composites Part B: Engineering, 143, 172-196(2018).
[5] Murr L E. A metallographic review of 3D printing/additive manufacturing of metal and alloy products and components[J]. Metallography, Microstructure, and Analysis, 7, 103-132(2018).
[8] Cao L, Chen S Y, Wei M W et al. Effect of laser energy density on defects behavior of direct laser depositing 24CrNiMo alloy steel[J]. Optics & Laser Technology, 111, 541-553(2019).
[9] Liu QC, ElambasserilJ, Sun SJ, et al., 2014, 891/892: 1519- 1524.
[10] Gong H J, Rafi K, Gu H F et al. Influence of defects on mechanical properties of Ti-6Al-4V components produced by selective laser melting and electron beam melting[J]. Materials & Design, 86, 545-554(2015).
[11] Xie R D, Li D C, Cui B et al. A defects detection method based on infrared scanning in laser metal deposition process[J]. Rapid Prototyping Journal, 24, 945-954(2018).
[13] Carslaw H S, Jaeger J C[M]. Conduction of heat in solids(1986).
[14] Li Y L. Numerical investigation on temperature field and stress field during selective laser melting of AlSi10Mg[D]. Nanjing: Nanjing University of Aeronautics and Astronautics(2015).
[15] Zhang Z D, Huang Y Z, Rani Kasinathan A et al. 3-Dimensional heat transfer modeling for laser powder-bed fusion additive manufacturing with volumetric heat sources based on varied thermal conductivity and absorptivity[J]. Optics & Laser Technology, 109, 297-312(2019).
[16] Arisoy Y M, Criales L E, Özel T. Modeling and simulation of thermal field and solidification in laser powder bed fusion of nickel alloy IN625[J]. Optics & Laser Technology, 109, 278-292(2019).
[17] Schänzel M, Shakirov D, Ilin A et al. Coupled thermo-mechanical process simulation method for selective laser melting considering phase transformation steels[J]. Computers & Mathematics With Applications, 78, 2230-2246(2019).
[18] Panda B K, Sahoo S. Thermo-mechanical modeling and validation of stress field during laser powder bed fusion of AlSi10Mg built part[J]. Results in Physics, 12, 1372-1381(2019).
[19] Du Y, You X Y, Qiao F B et al. A model for predicting the temperature field during selective laser melting[J]. Results in Physics, 12, 52-60(2019).
[20] Yin J, Peng G Y, Chen C P et al. Thermal behavior and grain growth orientation during selective laser melting of Ti-6Al-4V alloy[J]. Journal of Materials Processing Technology, 260, 57-65(2018).
[21] Wang Y C. Simulation of temperature field in laser cladding and study of laser scanning sequence method[D]. Urumqi: Xinjiang University(2018).
[22] Zhang D Y, Feng Z, Wang C J et al. Modeling of temperature field evolution during multilayered direct laser metal deposition[J]. Journal of Thermal Spray Technology, 26, 831-845(2017).
[23] Gan Z T, Liu H, Li S X et al. Modeling of thermal behavior and mass transport in multi-layer laser additive manufacturing of Ni-based alloy on cast iron[J]. International Journal of Heat and Mass Transfer, 111, 709-722(2017).
[24] Gan Z T, Yu G, He X L et al. Numerical simulation of thermal behavior and multicomponent mass transfer in direct laser deposition of co-base alloy on steel[J]. International Journal of Heat and Mass Transfer, 104, 28-38(2017).
[25] Duan W, Yin Y J, Zhou J X. Temperature field simulations during selective laser melting process based on fully threaded tree[J]. China Foundry, 14, 405-411(2017).
[26] Wei P, Wei Z Y, Chen Z et al. Thermal behavior in single track during selective laser melting of AlSi10Mg powder[J]. Applied Physics A, 123, 604(2017).
[27] Lei J B. Detection of laser remanufacturing molten pool temperature field based on CCD[D]. Tianjin: Tianjin Polytechnic University(2007).
[28] Hudson R D. Infrared system engineering[M]. New York: John Wiley & Sons, Inc.(1969).
[29] Hooper P A. Melt pool temperature and cooling rates in laser powder bed fusion[J]. Additive Manufacturing, 22, 548-559(2018).
[30] Lane B, Whitenton E, Moylan S. Multiple sensor detection of process phenomena in laser powder bed fusion[J]. Proceedings of SPIE, 9861, 986104(2016).
[31] Lane B, Moylan S, Whitenton E P et al. Thermographic measurements of the commercial laser powder bed fusion process at NIST[J]. Rapid Prototyping Journal, 22, 778-787(2016).
[32] Marshall G J, Young W J, Thompson S M et al. Understanding the microstructure formation of Ti-6Al-4V during direct laser deposition via in-situ thermal monitoring[J]. JOM, 68, 778-790(2016).
[33] Li S M, Xiao H, Liu K Y et al. Melt-pool motion, temperature variation and dendritic morphology of Inconel 718 during pulsed- and continuous-wave laser additive manufacturing: a comparative study[J]. Materials & Design, 119, 351-360(2017).
[34] de Baere D, Devesse W, de Pauw B et al. Spectroscopic monitoring and melt pool temperature estimation during the laser metal deposition process[J]. Journal of Laser Applications, 28, 022303(2016).
[35] Yuan Y H. Detection of laser molten pool temperature field based on CCD[D]. Hefei: Hefei University of Technology(2018).
[36] Qin L Y, Xu L L, Yang G et al. Correlations of thermal accumulation and melt pool geometry during laser deposition manufacturing of titanium alloy[J]. Rare Metal Materials and Engineering, 46, 2645-2650(2017).
[39] Xu H X. Study on temperature characteristics of selective laser melting forming layer[D]. Hefei: Hefei University of Technology(2018).
[40] Segerstark A, Andersson J, Svensson L E. Evaluation of a temperature measurement method developed for laser metal deposition[J]. Science and Technology of Welding and Joining, 22, 1-6(2016).
[41] Petrat T, Winterkorn R, Graf B et al. Build-up strategies for temperature control using laser metal deposition for additive manufacturing[J]. Welding in the World, 62, 1073-1081(2018).
[42] Devesse W, de Baere D, Hinderdael M et al. Hardware-in-the-loop control of additive manufacturing processes using temperature feedback[J]. Journal of Laser Applications, 28, 022302(2016).
[44] Sun H J. Research on close-loop control of molten pool temperature during laser cladding process based on color CCD[D]. Suzhou: Soochow University(2018).
[45] Shen C J, Zhao Z R, Yuan Z J et al. Research on laser cladding forming technology based on temperature control[J]. Journal of Hefei University of Technology(Natural Science), 40, 660-664(2017).
[46] Song L, 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, 58, 247-256(2012).
[47] Miyagi M, Tsukamoto T, Kawanaka H. Adaptive shape control of laser-deposited metal structures by adjusting weld pool size[J]. Journal of Laser Applications, 26, 032003(2014).
[48] Craeghs T, Bechmann F, Berumen S et al. Feedback control of layerwise laser melting using optical sensors[J]. Physics Procedia, 5, 505-514(2010).
[50] Tang L, Landers R G. Layer-to-layer height control for laser metal deposition process[J]. Journal of Manufacturing Science and Engineering, 133, 021009(2011).
[51] Tang L, Landers R G. Melt pool temperature control for laser metal deposition processes: part I: online temperature control[J]. Journal of Manufacturing Science and Engineering, 132, 011010(2010).
[52] Maly M, Höller C, Skalon M et al. Effect of process parameters and high-temperature preheating on residual stress and relative density of Ti6Al4V processed by selective laser melting[J]. Materials, 12, 930(2019).
[53] Sato Y, Tsukamoto M, Shobu T et al. Preheat effect on titanium plate fabricated by sputter-free selective laser melting in vacuum[J]. Applied Physics A, 124, 288(2018).
[54] Ali H, Ma L, Ghadbeigi H et al. In-situ residual stress reduction, martensitic decomposition and mechanical properties enhancement through high temperature powder bed pre-heating of selective laser melted Ti6Al4V[J]. Materials Science and Engineering: A, 695, 211-220(2017).
[55] Mertens R, Dadbakhsh S, Van Humbeeck J et al. Application of base plate preheating during selective laser melting[J]. Procedia CIRP, 74, 5-11(2018).
[57] Ding C G, Cui X, Jiao J Q et al. Effects of substrate preheating temperatures on the microstructure, properties, and residual stress of 12CrNi2 prepared by laser cladding deposition technique[J]. Materials, 11, 2401(2018).
[58] Fang J X, Li S B, Dong S Y et al. Effects of phase transition temperature and preheating on residual stress in multi-pass & multi-layer laser metal deposition[J]. Journal of Alloys and Compounds, 792, 928-937(2019).
[59] Xu J J, Lin X, Guo P F et al. The effect of preheating on microstructure and mechanical properties of laser solid forming IN-738LC alloy[J]. Materials Science and Engineering: A, 691, 71-80(2017).
[60] Buchbinder D, Meiners W, Pirch N et al. Investigation on reducing distortion by preheating during manufacture of aluminum components using selective laser melting[J]. Journal of Laser Applications, 26, 012004(2014).
[61] Zhang K, Wang S J, Liu W J et al. Effects of substrate preheating on the thin-wall part built by laser metal deposition shaping[J]. Applied Surface Science, 317, 839-855(2014).
[62] Kempen K, Vrancken B, Buls S et al. Selective laser melting of crack-free high density M2 high speed steel parts by baseplate preheating[J]. Journal of Manufacturing Science and Engineering, 136, 061026(2014).
[63] Fallah V, Alimardani M, Corbin S F et al. Impact of localized surface preheating on the microstructure and crack formation in laser direct deposition of Stellite 1 on AISI 4340 steel[J]. Applied Surface Science, 257, 1716-1723(2010).