[1] Wang Y M, Voisin T. McKeown J T, et al.Additively manufactured hierarchical stainless steels with high strength and ductility[J]. Nature Materials, 17, 63-71(2018).

[2] Murr L E, Gaytan S M, Ramirez D A et al. Metal fabrication by additive manufacturing using laser and electron beam melting technologies[J]. Journal of Materials Science & Technology, 28, 1-14(2012).

[3] Herzog D, Seyda V, Wycisk E et al. Additive manufacturing of metals[J]. Acta Materialia, 117, 371-392(2016).

[4] Gu D D, Hagedorn Y C, Meiners W et al. Densification behavior, microstructure evolution, and wear performance of selective laser melting processed commercially pure titanium[J]. Acta Materialia, 60, 3849-3860(2012).

[5] Kruth J P, Levy G, Klocke F et al. Consolidation phenomena in laser and powder-bed based layered manufacturing[J]. CIRP Annals, 56, 730-759(2007).

[6] Sing S L, Wiria F E, Yeong W Y. Selective laser melting of titanium alloy with 50wt% tantalum: effect of laser process parameters on part quality[J]. International Journal of Refractory Metals and Hard Materials, 77, 120-127(2018).

[7] Wang H M, Zhang S Q, Wang X M. Progress and challenges of laser direct manufacturing of large titanium structural components(invited paper)[J]. Chinese Journal of Lasers, 36, 3204-3209(2009).

[8] Louvis E, Fox P, Sutcliffe C J. Selective laser melting of aluminium components[J]. Journal of Materials Processing Technology, 211, 275-284(2011).

[9] Jia Q B, Gu D D. Selective laser melting additive manufacturing of Inconel 718 superalloy parts: densification, microstructure and properties[J]. Journal of Alloys and Compounds, 585, 713-721(2014).

[10] Montero-Sistiaga M L, Godino-Martinez M, Boschmans K et al. Microstructure evolution of 316L produced by HP-SLM (high power selective laser melting)[J]. Additive Manufacturing, 23, 402-410(2018).

[11] Nguyen Q B, Zhu Z, Ng F L et al. High mechanical strengths and ductility of stainless steel 304L fabricated using selective laser melting[J]. Journal of Materials Science & Technology, 35, 388-394(2019).

[12] Yang Y Q, Luo Z Y, Su X B et al. Study on process and effective factors of stainless steel thin-wall parts manufactured by selective laser melting[J]. Chinese Journal of Lasers, 38, 0103001(2011).

[13] 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).

[14] Moussaoui K, Rubio W, Mousseigne M et al. Effects of selective laser melting additive manufacturing parameters of Inconel 718 on porosity, microstructure and mechanical properties[J]. Materials Science and Engineering: A, 735, 182-190(2018).

[15] Guan K, Wang Z M, Gao M et al. Effects of processing parameters on tensile properties of selective laser melted 304 stainless steel[J]. Materials & Design, 50, 581-586(2013).

[16] 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).

[17] Mertens R, Vrancken B, Holmstock N et al. Influence of powder bed preheating on microstructure and mechanical properties of H13 tool steel SLM parts[J]. Physics Procedia, 83, 882-890(2016).

[18] Liu F G, Lin X, Yang H O et al. Effect of microstructure on the fatigue crack growth behavior of laser solid formed 300M steel[J]. Materials Science and Engineering: A, 695, 258-264(2017).

[19] Wei M W, Chen S Y, Xi L Y et al. Selective laser melting of 24CrNiMo steel for brake disc: fabrication efficiency, microstructure evolution, and properties[J]. Optics & Laser Technology, 107, 99-109(2018).

[20] Yuan M Y, Chen Y, Wang S et al. Study on selective laser melting process of 24CrNiMo alloy steel[J]. Engineering & Test, 59, 18-21(2019).

[21] Tucho W M, Lysne V H, Austbø H et al. Investigation of effects of process parameters on microstructure and hardness of SLM manufactured SS316L[J]. Journal of Alloys and Compounds, 740, 910-925(2018).

[22] Casati R, Coduri M, Lecis N et al. Microstructure and mechanical behavior of hot-work tool steels processed by selective laser melting[J]. Materials Characterization, 137, 50-57(2018).

[23] Krell J, Röttger A, Geenen K et al. General investigations on processing tool steel X40CrMoV5-1 with selective laser melting[J]. Journal of Materials Processing Technology, 255, 679-688(2018).

[24] Geenen K, Röttger A, Feld F et al. Microstructure, mechanical, and tribological properties of M3:2 high-speed steel processed by selective laser melting, hot-isostatic pressing, and casting[J]. Additive Manufacturing, 28, 585-599(2019).

[25] Li R Y, Song C Z[J]. Research on casting process of 250 km/h high speed rail brake disc based on riser Mechanical Engineer, 2017, 44-45.

[26] Futás P, Pribulová A, Fedorko G et al. Failure analysis of a railway brake disc with the use of casting process simulation[J]. Engineering Failure Analysis, 95, 226-238(2019).

[27] Geng J H, Jiao J Q, Zhu P et al[J]. Application of 24CrNiMo laser deposition technology in the manufacture of brake discs for high-speed railway Railway Locomotive and Motor Car, 2018, 12-13.

[28] Tao H Y, Fu C F. Precision forging and shaping of several important parts of Chinese high-speed railway[J]. Journal of Ordnance Equipment Engineering, 37, 119-123(2016).

[29] Girault E, Jacques P. HarletP, et al. Metallographic methods for revealing the multiphase microstructure of TRIP-assisted steels[J]. Materials Characterization, 40, 111-118(1998).

[30] Vandijk N, Butt A, Zhao L et al. Thermal stability of retained austenite in TRIP steels studied by synchrotron X-ray diffraction during cooling[J]. Acta Materialia, 53, 5439-5447(2005).

[31] 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).

[32] Luo X, Chen X H, Wang T et al. Effect of morphologies of martensite-austenite constituents on impact toughness in intercritically reheated coarse-grained heat-affected zone of HSLA steel[J]. Materials Science and Engineering: A, 710, 192-199(2018).

[33] 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).

[34] Zhang K, Zhang M H, Guo Z H et al. A new effect of retained austenite on ductility enhancement in high-strength quenching-partitioning-tempering martensitic steel[J]. Materials Science and Engineering: A, 528, 8486-8491(2011).