Abstract
Selective electron beam melting of Ti-6Al-4V is a promising additive manufacturing process to produce complex parts layer-by-layer additively. The quality and dimensional accuracy of the produced parts depend on various process parameters and their interactions. In the present contribution, the lifetime, width and depth of the pools of molten powder material are analyzed for different beam powers, scan speeds and line energies in experiments and simulations. In the experiments, thin-walled structures are built with an ARCAM AB A2 selective electron beam melting machine and for the simulations a thermal finite element simulation tool is used, which is developed by the authors to simulate the temperature distribution in the selective electron beam melting process. The experimental and numerical results are compared and a good agreement is observed. The lifetime of the melt pool increases linearly with the line energy, whereby the melt pool dimensions show a nonlinear relation with the line energy.
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References
Aggarangsi P, Beuth JL, Gill DD (2004) Transient changes in melt pool size in laser additive manufacturing processes. In: Solid freeform fabrication proceedings, pp 163–1747
Ammer R, Rüde U, Markl M, Jüchter V, Körner C (2014) Validation experiments for LBM simulations of electron beam melting. Int J Modern Phys C 25(12):1441,009
ASM: Titanium ti-6al-4v (grade 5) annealed (2014). http://asm.matweb.com/search/SpecificMaterial.asp?bassnum=MTP641. Technical datasheet for Ti-6Al-4V from ASM Aerospace Specifications Metals Inc.
Bangerth W, Hartmann R, Kanschat G (2007) deal.II - a general-purpose object-oriented finite element library. ACM Trans Math Softw (TOMS) 33(4):24
Baumers M, Tuck C, Hague R, Ashcroft I, Wildman R (2010) A comparative study of metallic additive manufacturing power consumption. In: Proceedings of the 2010 solid freeform fabrication symposium
Bikas H, Stavropoulos P, Chryssolouris G (2015) Additive manufacturing methods and modelling approaches: a critical review. Int J Adv Manuf Technol:1–17
Boivineau M, Cagran C, Doytier D, Eyraud V, Nadal MH, Wilthan B, Pottlacher G (2006) Thermophysical properties of solid and liquid Ti-6Al-4V alloy. Int J Thermophys 27(2):507–529
Carpenter: Titanium alloy Ti-6Al-4V (2014). http://cartech.ides.com. Technical datasheet for Ti-6Al-4V from Carpenter
Chen YX, Wang XJ, Chen SB (2014) The effect of electron beam energy density on temperature field for electron beam melting. Adv Mater Res 900:631–638
Cormier D, Harrysson O, West H (2004) Characterization of H13 steel produced via electron beam melting. Rapid Prototyp J 10(1):35–41
Denlinger ER, Heigel JC, Michaleris P (2014) Residual stress and distortion modeling of electron beam direct manufacturing Ti-6Al-4V. In: Proceedings of the institution of mechanical engineers, part b: journal of engineering manufacture p 0954405414539494
Ellsiepen P. (1999) Zeit- und ortsadaptive Verfahren angewandt auf Mehrphasenprobleme poroser Medien̈. Inst. für Mechanik (Bauwesen), Ph.D. thesis
Frigola P, Harrysson O, Horn T, Ramirez D, Murr L (2014) Fabricating copper components with electron beam melting. Adv Mater Process 172(7):20–24
Gaytan S, Murr L, Martinez E, Martinez J, Machado B, Ramirez D, Medina F, Collins S, Wicker R (2010) Comparison of microstructures and mechanical properties for solid and mesh cobalt-base alloy prototypes fabricated by electron beam melting. Metallurg Mater Trans A 41(12):3216–3227
Harrysson O, Cormier D, Marcellin-Little D, Jajal K (2003) Direct fabrication of metal orthopedic implants using electron beam melting technology. In: Solid freeform fabrication symposium proceedings, pp 439–446
Heinl P, Müller L, Körner C, Singer RF, Müller FA (2008) Cellular Ti–6Al–4V structures with interconnected macro porosity for bone implants fabricated by selective electron beam melting. Acta Biomaterialia 4(5):1536–1544
Heinl P, Rottmair A, Körner C, Singer RF (2007) Cellular titanium by selective electron beam melting. Adv Eng Mater 9(5):360–364
Jamshidinia M, Kong F, Kovacevic R (2013) The coupled CFD-FEM model of electron beam melting. ASME District F - Early Career Tech Conf Proc 12:163–171
Juechter V, Scharowsky T, Singer R, Körner C (2014) Processing window and evaporation phenomena for Ti–6Al–4V produced by selective electron beam melting. Acta Materialia 76:252–258
Karunakaran K, Bernard A, Suryakumar S, Dembinski L, Taillandier G (2012) Rapid manufacturing of metallic objects. Rapid Prototyp J 18(4):264–280
Kaschnitz E, Reiter P, McClure J (2002) Thermophysical properties of solid and liquid 90Ti–6Al–4V in the temperature range from 1400 to 2300 K measured by millisecond and microsecond pulse-heating techniques. Int J Thermophys 23(1):267–275
Klassen A, Bauereiß A, Körner C (2014) Modelling of electron beam absorption in complex geometries. J Phys D: Appl Phys 47(6):065,307
Körner C, Attar E, Heinl P (2011) Mesoscopic simulation of selective beam melting processes. J Mater Process Technol 211(6):978–987
Markl M, Ammer R, Rüde U, Körner C (2014) Improving hatching strategies for powder bed based additive manufacturing with an electron beam by 3D simulations. CoRR arXiv:1403.3251
Murr L, Gaytan S, Medina F, Martinez E, Martinez J, Hernandez D, Machado B, Ramirez D, Wicker R (2010) Characterization of Ti–6Al–4V open cellular foams fabricated by additive manufacturing using electron beam melting. Mater Sci Eng A 527(7):1861–1868
Murr L, Martinez E, Gaytan S, Ramirez D, Machado B, Shindo P, Martinez J, Medina F, Wooten J, Ciscel D et al (2011) Microstructural architecture, microstructures, and mechanical properties for a nickel-base superalloy fabricated by electron beam melting. Metallurg Mater Trans A 42(11):3491–3508
Rai R, Burgardt P, Milewski J, Lienert T, DebRoy T (2009) Heat transfer and fluid flow during electron beam welding of 21Cr–6Ni–9Mn steel and Ti–6Al–4V alloy. J Phys D: Appl Phys 42(2):025,503
Ramirez D, Murr L, Li S, Tian Y, Martinez E, Martinez J, Machado B, Gaytan S, Medina F, Wicker R (2011) Open-cellular copper structures fabricated by additive manufacturing using electron beam melting. Mater Sci Eng A 528(16):5379–5386
Ramirez D, Murr L, Martinez E, Hernandez D, Martinez J, Machado B, Medina F, Frigola P, Wicker R (2011) Novel precipitate–microstructural architecture developed in the fabrication of solid copper components by additive manufacturing using electron beam melting. Acta Mater 59(10):4088–4099
Riedlbauer D, Steinmann P, Mergheim J (2014) Thermomechanical finite element simulations of selective electron beam melting processes: performance considerations. Comput Mech 54(1):109–122
Scharowsky T, Osmanlic F, Singer R, Körner C (2014) Melt pool dynamics during selective electron beam melting. Appl Phys A 114(4):1303–1307
Shen N, Chou Y (2012) Numerical thermal analysis in electron beam additive manufacturing with preheating effects. In: Proceedings of the 23rd solid freeform fabrication symposium, pp 774–784
Zäh MF, Lutzmann S (2010) Modelling and simulation of electron beam melting. Product Eng 4(1):15–23
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Riedlbauer, D., Scharowsky, T., Singer, R.F. et al. Macroscopic simulation and experimental measurement of melt pool characteristics in selective electron beam melting of Ti-6Al-4V. Int J Adv Manuf Technol 88, 1309–1317 (2017). https://doi.org/10.1007/s00170-016-8819-6
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DOI: https://doi.org/10.1007/s00170-016-8819-6