[1] Zhang A F, Li D C, Liang S D et al[J]. Development of laser additive manufacturing of high-performance metal parts Aeronautical Manufacturing Technology, 2016, 16-22.

[2] Li D C, He J K, Tian X Y et al. Additive manufacturing: integrated fabrication of macro/microstructures[J]. Journal of Mechanical Engineering, 49, 129-135(2013).

[3] Lu B H, Li D C. Development of the additive manufacturing (3D printing) technology[J]. Machine Building & Automation, 42, 1-4(2013).

[4] Dinda G P, Song L, Mazumder J. Fabrication of Ti-6Al-4V scaffolds by direct metal deposition[J]. Metallurgical and Materials Transactions A, 39, 2914-2922(2008). http://link.springer.com/article/10.1007/s11661-008-9634-y

[5] Hollander D A, von Walter M, Wirtz T et al. . Structural, mechanical and in vitro characterization of individually structured Ti-6Al-4V produced by direct laser forming[J]. Biomaterials, 27, 955-963(2006).

[6] Zhu Y Y, Li J, Tian X J et al. Microstructure and mechanical properties of hybrid fabricated Ti-6.5Al-3.5Mo-1.5Zr-0.3Si titanium alloy by laser additive manufacturing[J]. Materials Science and Engineering: A, 607, 427-434(2014). http://www.sciencedirect.com/science/article/pii/S092150931400464X

[7] Kobryn P A, Semiatin S L. Mechanical properties of laser-deposited Ti-6Al-4V. [C]//Solid Freeform Fabrication Proceedings, August 6-8, 2001, University of Texas, Austin. [S.l.: s.n.], 179-186(2001).

[8] Chen J, Zhang S Y, Xue L et al. Mechanical properties of Ti-6Al-4V alloy by laser rapid forming[J]. Rare Metal Materials and Engineering, 36, 475-479(2007).

[9] Li J, Lin X, Qian Y H et al. Study on microstructure and property of laser solid forming TC4 titanium alloy[J]. Chinese Journal of Lasers, 41, 1103010(2014).

[10] Baufeld B, van der Biest O, Gault R. Additive manufacturing of Ti-6Al-4V components by shaped metal deposition: microstructure and mechanical properties[J]. Materials & Design, 31, S106-S111(2010). http://www.sciencedirect.com/science/article/pii/S0261306909006529

[11] Zhu J, Kamiya A, Yamada T et al. Influence of boron addition on microstructure and mechanical properties of dental cast titanium alloys[J]. Materials Science and Engineering: A, 339, 53-62(2003). http://www.sciencedirect.com/science/article/pii/S0921509302001028

[12] Huang L G, Chen Y Y. Research progress of effects of boron on formability and mechanical properties of titanium alloys[J]. Materials for Mechanical Engineering, 40, 8-13(2016).

[13] Liang Z Y, Zhang A F, Li L J et al. Induction heating assisted modifier boron refining of TC4 grains by laser cladding deposition[J]. Chinese Journal of Lasers, 45, 0702001(2018).