Investigation of properties of the regular structures obtained by additive technologies in combination with the powder metallurgy methods

Despite significant amount of research and applied works in the additive technologies, problems of the topological optimization of structures obtained by combining 3D printing and the powder metallurgy methods remain insufficiently studied both theoretically and experimentally. Results of simulating regular structures made of plastics and studying their destruction processes could be effectively used as a starting approach in developing technology for production of the composite materials based on the titanium alloys with the increased level of strength properties. Based on numerical experiments and full-scale tests, the most preferred types of structures were determined. They include honeycomb structures based on PLA with the following strength properties: elastic modulus — 342.3 MPa; ultimate compressive strength — 20.4 MPa; specific strength — 81 MPa cm³/g. 3D models realized on plastics were used in manufacture of the metal composites using technology combining selective laser melting and powder metallurgy. In addition to increasing density and eliminating porosity of structures made from the titanium alloy powders, the strength properties level also increases after infiltration with the lower-melting alloys, since redistribution of stresses arising in the titanium frame under load is ensured. Bending strength alters in the range of 1140...1560 MPa and elastic modulus - in the range of 49 500...54 000 MPa depending on the composite composition and selective laser melting modes. Rockwell hardness increases from 35 to 45 HRC, and Brinell hardness — from 340 to 410 HB, which is by 20...25 % higher than hardness of the rolled products from the VT6 alloy. The increased strength values could be explained by the material composite structure formed by combination of the two mutually penetrating frames. Results of testing samples for strength are another argument in favor of the proposed infiltration method implying combined additive and powder metallurgy methods.

References

[1] Chen L.Y., Liang S.X., Liu Y. et al. Additive manufacturing of metallic lattice structures: Unconstrained design, accurate fabrication, fascinated performances, and challenges. Mater. Sci. Eng. R Rep., 2021, vol. 146, art. 100648, doi: https://doi.org/10.1016/j.mser.2021.100648

[2] Najmon J.C., Raeisi S., Tovar A. Review of additive manufacturing technologies and applications in the aerospace industry. In: Additive manufacturing for the aerospace industry. Elsevier, 2019, pp. 7–31.

[3] Großmann A., Gosmann J., Mittelstedt C. Lightweight lattice structures in selective laser melting: design, fabrication and mechanical properties. Mater. Sci. Eng. A, 2019, vol. 766, art. 138356, doi: https://doi.org/10.1016/j.msea.2019.138356

[4] Heinl P., Müller L., Körner C. et al. Cellular Ti-6Al-4V structures with interconnected macro porosity for bone implants fabricated by selective electron beam melting. Acta Biomater., 2008, vol. 4, no. 5, pp. 1536–1544, doi: https://doi.org/10.1016/j.actbio.2008.03.013

[5] Dyachenko S.V., Lebedev L.A., Sychev M.M. et al. Physicomechanical properties of a model material in the form of a cube with the topology of triply periodic minimal surfaces of the gyroid type. ZhTF, 2018, vol. 88, no. 7, pp. 1014–1017, doi: https://doi.org/10.21883/JTF.2018.07.46169.2555 (in Russ.). (Eng. version: Tech. Phys., 2018, vol. 63, no. 7, pp. 984–987, doi: https://doi.org/10.1134/S1063784218070101)

[6] Tino R., Leary M., Yeo A. et al. Gyroid structures for 3D-printed heterogeneous radiotherapy phantoms. Phys. Med. Biol., 2019, vol. 64, no. 21, art. 21NT05, doi: http://dx.doi.org/10.1088/1361-6560/ab48ab

[7] Markov V.A., Pusev V.I., Selivanov V.V. Highly porous metals and honeycomb structures for shock wave protection. Voprosy oboronnoy tekhniki. Ser. 16. Tekhnicheskie sredstva protivodeystviya terrorizmu, 2012, no. 7–8, pp. 54–62. (In Russ.).

[8] Igonina E.V., Druzhinina O.V. Particular qualities of the development and application of fdm-technology for creating and prototyping 3d-objects. Sovremennye informatsionnye tekhnologii i IT-obrazovanie [Modern Information Technologies and IT-Education], 2017, vol. 13, no. 2, pp. 185–193. (In Russ.).

[9] Henderson L., Glaser T., Kuester F. Towards bio-inspired structural design of a 3D printable, ballistically deployable, multi-rotor UAV. IEEE Aerospace Conf., 2017, doi: https://doi.org/10.1109/AERO.2017.7943970

[10] Zlenko M.A., Popovich A.A., Mutylina I.N. Additivnye tekhnologii v mashinostroenii [Additive technologies in machine building]. Sankt-Petersburg, SPbPU Publ., 2013. 222 p. (In Russ.).

[11] Makarenko K.I., Konev S.D., Dubinin O.N. et al. Mechanical characteristics of laser-deposited sandwich structures and quasi-homogeneous alloys of Fe-Cu system. Mater. Des., 2022, vol. 224, art. 111313, doi: https://doi.org/10.1016/j.matdes.2022.111313

[12] Do T., Kwon P., Shin C.S. Process development toward full-density stainless steel parts with binder jetting printing. Int. J. Mach. Tools Manuf., 2017, vol. 121, pp. 50–60, doi: https://doi.org/10.1016/j.ijmachtools.2017.04.006

[13] Kolchanov D.S., Drenin A.A., Denezhkin A.O. et al. Features of the process of selective laser melting from structural steel 28Cr3SiNiMoWV. Izvestiya vysshikh uchebnykh zavedeniy. Mashinostroenie [BMSTU Journal of Mechanical Engineering], 2022, no. 10, pp. 79–88, doi: https://doi.org/10.18698/0536-1044-2022-10-79-88 (in Russ.).

[14] Lores A., Azurmendi N., Agote I. et al. A review on recent developments in binder jetting metal additive manufacturing: materials and process characteristics. Powder Metall., 2019, vol. 62, no. 5, pp. 267–296, doi: https://doi.org/10.1080/00325899.2019.1669299

[15] Vangapally S., Agarwal K., Sheldon A. et al. Effect of lattice design and process parameters on dimensional and mechanical properties of binder jet additively manufactured stainless steel 316 for bone scaffolds. Procedia Manuf., 2017, vol. 10, pp. 750–759, doi: https://doi.org/10.1016/j.promfg.2017.07.069

[16] Do T., Shin C.S., Stetsko D. et al. Improving structural integrity with boron-based additives for 3D printed 420 stainless steel. Procedia Manuf., 2015, vol. 1, pp. 263–272, doi: https://doi.org/10.1016/j.promfg.2015.09.019

[17] Ziaee M., Tridas E.M., Crane N.B. Binder-jet printing of fine stainless steel powder with varied final density. JOM, 2017, vol. 69, no. 3, pp. 592–596, doi: https://doi.org/10.1007/s11837-016-2177-6

[18] Tang Y., Zhou Y., Hoff T. et al. Elastic modulus of 316 stainless steel lattice structure fabricated via binder jetting process. Mater. Sci. Technol., 2016, vol. 32, no. 7, pp. 648–656, doi: https://doi.org/10.1179/1743284715Y.0000000084

[19] Nandwana P., Elliott A.M., Siddel D. et al. Powder bed binder jet 3D printing of Inconel 718: Densification, microstructural evolution and challenges. Curr. Opin. Solid State Mater., 2017, vol. 21, no. 4, pp. 207–218, doi: https://doi.org/10.1016/j.cossms.2016.12.002

[20] Mostafaei A., Stevens E.L., Hughes E.T. et al. Powder bed binder jet printed alloy 625: densification, microstructure and mechanical properties. Mater. Des., 2016, vol. 108, pp. 126–135, doi: https://doi.org/10.1016/j.matdes.2016.06.067

[21] Turker M., Godlinski D., Petzoldt F. Effect of production parameters on the properties of IN 718 superalloy by three-dimensional printing. Mater. Charact., 2008, vol. 59, no 12, pp. 1728–1735, doi: https://doi.org/10.1016/j.matchar.2008.03.017

[22] Mostafaei A., Neelapu S.H.V.R., Kisailus C. et al. Characterizing surface finish and fatigue behavior in binder-jet 3D-printed nickel-based superalloy 625. Addit. Manuf., 2018, vol. 24, pp. 200–209, doi: https://doi.org/10.1016/j.addma.2018.09.012

[23] Gordeev Y.I., Abkaryan A.K., Surovtsev A.V. et al. Investigation into the peculiarities of structure formation and properties of copper-based powder pseudoalloys modified by ZnO and TiN nanoparticle additives. Russ. J. Non-ferrous Metals, 2019, no. 60, no. 1, pp. 68–75, doi: https://doi.org/10.3103/S1067821219010048

[24] Bai Y., Wagner G., Williams C.B. Effect of particle size distribution on powder packing and sintering in binder jetting additive manufacturing of metals. J. Manuf. Sci. Eng., 2017, vol. 139, no. 8, art. 081019, doi: https://doi.org/10.1115/1.4036640

[25] Sheydaeian E., Sarikhani K., Chen P. et al. Material process development for the fabrication of heterogeneous titanium structures with selective pore morphology by a hybrid additive manufacturing process. Mater. Des., 2017, vol. 135, pp. 142–150, doi: https://doi.org/10.1016/j.matdes.2017.09.025

[26] Xiong Y., Qian C., Sun J. Fabrication of porous titanium implants by three-dimensional printing and sintering at different temperatures. Dent. Mater. J., 2012, vol. 31, no. 5, pp. 815–820, doi: https://doi.org/10.4012/dmj.2012-065

[27] Enneti R.K., Prough K.C., Wolfe T.A. et al. Sintering of WC-12% Co processed by binder jet 3D printing (BJ3DP) technology. Int. J. Refract. Met. Hard Mater., 2018, vol. 71, pp. 28–35, doi: https://doi.org/10.1016/j.ijrmhm.2017.10.023

[28] Gordeev Y.I., Yasinskiy V.B., Anistratenko N.E. et al. Study of the formation features of hard metal composites structure obtained from bimodal powder mixtures. IOP Conf. Ser.: Mater. Sci. Eng., 2019, vol. 511, art. 012032, doi: https://doi.org/10.1088/1757-899X/511/1/012032

[29] Gordeev Y.I., Zeer G.M., Yasinsky V.B. et al. Investigation of nanostructured hard metal composites obtained from powder mixtures (WC-Co)-Al2O3. J. Phys.: Conf. Ser., 2022, vol. 2373, no. 3, art. 032025, doi: https://doi.org/10.1088/1742-6596/2373/3/032025

[30] Lima P., Zocca A., Acchar W. et al. 3D printing of porcelain by layerwise slurry deposition. J. Eur. Ceram. Soc., 2018, vol. 38, no. 9, pp. 3395–3400, doi: https://doi.org/10.1016/j.jeurceramsoc.2018.03.014

[31] Somasundram I.M., Cendrowicz A., Wilson D.I. et al. Phenomenological study and modelling of wick debinding. Chem. Eng. Sci., 2008, vol. 63, no 14, pp. 3802–3809, doi: https://doi.org/10.1016/j.ces.2008.04.040

[32] Kumar A., Bai Y., Eklund A. et al. Effects of hot isostatic pressing on copper parts fabricated via binder jetting. Procedia Manuf., 2017, vol. 10, pp. 935–944, doi: https://doi.org/10.1016/j.promfg.2017.07.084

[33] Kumar A., Bai Y., Eklund A. et al. The effects of Hot Isostatic Pressing on parts fabricated by binder jetting additive manufacturing. Addit. Manuf., 2018, vol. 24, pp. 115–124, doi: https://doi.org/10.1016/j.addma.2018.09.021

[34] Kernan B.D., Sachs E.M., Allen S.M. et al. Homogeneous steel infiltration. Metall. Mater. Trans. A, 2005, vol. 36, no. 10, pp. 2815–2827, doi: https://doi.org/10.1007/s11661-005-0278-x

[35] Balabanov S.V., Makogon A.I., Sychev M.M. et al. D printing and mechanical properties of polyamide products with Schwartz primitive topology. ZhTF, 2020, vol. 90, no. 2, pp. 223–227, doi: https://doi.org/10.21883/JTF.2020.02.48813.209-19 (in Russ.). (Eng. version: Tech. Phys., 20250, vol. 65, no. 2, pp. 211–215, doi: https://doi.org/10.1134/S1063784220020036)

[36] Gordeev Y.I., Yasinski V.B., Binchurov A.S. et al. Combined application of composite powders WC-Co and additives of nanoparticles as an effective method of improving the properties of hard metals. Key Engineering Materials, 2018, vol. 769, pp. 134–140, doi: https://doi.org/10.4028/www.scientific.net/KEM.769.134