[1] Sun Xiaofeng, Jin Tao, Zhou Yizhou, et al. Research progress of nickel-base single crystal superalloys[J]. Materials China, 2012,31(12): 1-11.
[2] Hu Zhuangqi, Liu Lirong, Jin Tao, et al. Development of the Ni-base single crystal superalloys[J]. Aeroengine, 2005, 31(3): 1-7.
[3] Tang Xiaojun, Zhang Yongjun, Li Jianguo. Directional solidification of a Ni-based single crystal superalloy under high temperature gradient[J]. Rare Metal Materials and Engineering, 2012, 41(4): 738-742.
[4] Min Zhixian, Shen Jun, Xiong Yilong, et al. Microstructural evolution of directionally solidified Ni-based superalloy DZ125 under high temperature gradient[J]. Acta Metallurgica Sinica, 2011, 47(4): 397-402.
[5] Liu Gang, Liu Lin, Zhao Xinbao, et al. Microstructure and microsegregation in a Ni-based single crystal superalloy directionally solidified under high thermal gradient[J]. Acta Metallurgica Sinica, 2010,46(1): 77-83.
[6] Liu Lin, Zhang Jun, Shen Jun, et al. Advances in directional solidification techniques of superalloys[J]. Materials China, 2010, 29(7): 1-9.
[7] Zhang Weiguo, Liu Lin, Huang Taiwen, et al. Determining the temperature measurement of temperature gradient on ZMLMC directional solidification apparatus and the effect of temperature gradient on solidification microstructure[J]. Foundry Technology, 2006, 27(11): 1165-1168.
[9] Gumann M, Bezencon C, Canalis P, et al. Single-crystal laser deposition of superalloys: Processing-microstructure maps[J]. Acta Materialia, 2001,49(6): 1051-1062.
[10] Gumann M, Henry S, Cleton F, et al. Epitaxial laser metal forming: Analysis of microstructure formation[J]. Materials Science and Engineering: A, 1999, 271(1/2): 232-241.
[11] Kurz W, Bezencon C, Gumann M. Columnar to equiaxed transition in solidification processing[J]. Science and Technology of Advanced Materials, 2001, 2(1): 185-191.
[12] Feng Liping, Huang Weidong, Li Yanmin, et al. Investigation on the microstructure and composition segregation of the laser metal forming directional solidification[J]. Acta Metallurgica Sinica, 2002, 38(5): 501-506.
[13] Jin Jutao, Zhang Yongzhong, Huang Can, et al. Solidification microstructure and mechanical properties of laser direct deposited Rene95 nickel based superalloy[J]. Chinese Journal of Rare Metals, 2009, 33(6): 805-810.
[14] Kempen K, Yasa E, Thijs L, et al. Microstructure and mechanical properties of selective laser melted 18Ni-300 steel[C]. Physics Procedia, 2011,12: 255-263.
[15] Choi J P, Shin G H, Yang S S, et al. Densification and microstructural investigation of Inconel 718 parts fabricated by selective laser melting[J]. Powder Technology, 2017, 310: 60-66.
[16] Wang F, Wu X H, Clark D. On direct laser deposited Hastelloy X: Dimension, surface finish, microstructure and mechanical properties[J]. Materials Science and Technology, 2011, 27(1): 344-356.
[17] Alexey D, Anna P, Igor M, et al. Microstructure and physical properties of a Ni/Fe-based superalloy processed by selective laser melting[J]. Additive Manufacturing, 2017,15: 66-77.
[18] Carter L N, Wang X, Read N, et al. Process optimisation of selective laser melting using energy density model for nickel based superalloys[J]. Materials Science and Technology, 2016, 32(7): 657-661.
[19] Hou Huipeng, Liang Yongchao, He Yanli, et al. Microstructural evolution and tensile properties of Hastelloy-X alloys produced by selective laser melting[J]. Chinese J Lasers, 2017, 44(2): 0202007.
[20] Yan Anru, Yang Tiantian, Wang Yanling, et al. Thermal properties and mechanical properties of selective laser melting different layer thicknesses of Ni powder[J]. Chinese J Lasers, 2016, 43(2): 0203004.
[21] Hunt J D. Solidification and casting of metals[M]. London: The Metal Society, 1979: 99-108.