The Paton Welding Journal, 2025, №08

2025 №08 (02)

2025 №08 (04)

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The Paton Welding Journal, 2025, #8, 29-36 pages

Obtaining functionally-graded metal-matrix materials Ti‒6Al‒4V + WC in the process of 3D printing by the method of additive plasma-arc deposition

V. Korzhyk¹, A. Grynyuk², O. Babych², O. Berdnikova¹, Ye. Illiashenko¹, O. Bushma¹

¹E.O. Paton Electric Welding Institute of the NASU. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: vnkorzhyk@gmail.com
²Scientific-Research Institute of Welding Technologies in Zhenjiang Province 233 Yonghui Road, Xiaoshan District, Hangzhou City, Zhejiang Province, China

Abstract
The possibility of 3D printing by additive plasma-arc surfacing of three-dimensional products from composite functionally- graded metal-matrix materials, in which the matrix is the titanium alloy Ti‒6Al‒4V and the reinforcing phase is tungsten carbide, has been experimentally confirmed. The technology of additive plasma-arc deposition with simultaneous feeding of powder or filler wire of titanium alloy Ti‒6Al‒4V Grade 5 and spherical WC powder into the plasma arc allows obtaining three-dimensional samples from functionally-graded metal-matrix materials of the “wall” type, in which the content of tungsten carbide along their height varies from 0 to 50 vol.% with a corresponding change in the hardness index from HRC 32 for the lower (deep) layers and up to HRC 56‒66 and higher towards the surface layers. By selecting plasma spraying modes and energy input, it is possible to change the hardness, microstructure, and microhardness of the matrix of the material of the deposited layers, including the degree of melting of spherical WC powder particles, namely, to preserve their spherical shape with a microhardness of HV0.1 = 2172‒3796 or to achieve their partial and complete melting. In the case of preserving the spherical shape of WC particles in a matrix of titanium alloy Ti‒6Al‒4V, the presence of a metallurgical bond between them and this matrix is characteristic. It has been established that the tensile strength of the obtained materials for the case of additive deposition with Ti‒6Al‒4V filler wire with the addition of WC powder up to 50 vol.% reaches σt = 666.8 MPa, which corresponds to 75 % of the tensile strength of the Ti‒6Al‒4VBT6 Grade 5 alloy of identical chemical composition (annealed sheet), which acts as the matrix of the studied composite material. The impact strength of the samples of wall-type joints with welded layers of the composite material Ti‒6Al‒4V Grade 5 alloy + WC powder reaches up to 70–80 % of the level of this parameter of the Ti‒6Al‒4V Grade 5 titanium alloy sheet.
Keywords: 3D printing, additive plasma-arc deposition, titanium alloys, tungsten carbide, functionally-graded materials, structure, mechanical properties

Received: 13.05.2025
Received in revised form: 18.06.2025
Accepted: 07.08.2025

References

1. Zafar, F., Emadinia, O., Conceição, J. et al. (2023) A review on direct laser deposition of Inconel 625 and Inconel 625-based composites challenges and prospects. Metals, 13, 787. DOI: https://doi.org/10.3390/met13040787
2. Preis, J., Wang, Z., Howard, J. et al. (2024) Effect of laser power and deposition sequence on microstructure of GRCop42 ‒ Inconel 625 joints fabricated using laser directed energy deposition. Materials and Design, 241, 112944. DOI: https://doi.org/10.1016/j.matdes.2024.112944
3. Zhukov, V., Grigorenko, G., Shapovalov V. (2016) Additive manufacturing of metal components (Review). The Paton Welding J., 5–6, 137–142. DOI: https:/doi.org/10.15407/tpwj2016.06.24
4. Su, G., Shi, Y. Li, G. et al. (2023) Improving the deposition efficiency and mechanical properties of additive manufactured Inconel 625 through hot wire laser metal deposition. J. of Materials Processing Technology, 322, 118175. DOI: https://doi.org/10.1016/j.jmatprotec.2023.118175
5. Danielewski, H., Radek, N., Orman, L. et al. (2023) Laser metal deposition of Inconel 625 alloy — Comparison of powder and filler wire methods. Materials Research Proceedings, 34, 154‒160. DOI: https://doi.org/10.21741/9781644902691-19
6. Gu, Y., Xu, Y., Shi, Y. et al. (2022) Corrosion resistance of 316 stainless steel in a simulated pressurized water reactor improved by laser cladding with chromium. Surface and Coatings Technology, 441, 128534. DOI: https://doi.org/10.1016/j.surfcoat.2022.128534
7. Ahn, D. (2021) Directed energy deposition (DED) process: State of the Art. Int. J. of Precis. Eng. and Manuf.-Green Tech., 8, 703‒742. DOI: https://doi.org/10.1007/s40684-020-00302-7
8. Svetlizky, D., Das, M., Zheng, B. et al. (2021) Directed energy deposition (DED) additive manufacturing: Physical characteristics, defects, challenges and applications. Materials Today, 49, 271‒295. DOI: https://doi.org/10.1016/j.mattod.2021.03.020
9. King, W., Anderson, A., Ferencz, R. et al. (2015) Laser powder bed fusion additive manufacturing of metals; physics, computational, and materials challenges. Applied Physics Reviews, 2, 041304. DOI: https://doi.org/10.1063/1.4937809 10. Hassila C., Paschalidou, M., Harlin, P. et al. (2022) Potential of nitrogen atomized alloy 625 in the powder bed fusion laser beam process. Materials and Design, 221, 110928. DOI: https://doi.org/10.1016/j.matdes.2022.110928
11. Rehman, A., Karakas, B., Mahmood, M. et al. (2023) Additive manufacturing of Inconel-625: From powder production to bulk samples printing. Rapid Prototyping J., 23(9), 1788‒1799. DOI: https://doi.org/10.1108/RPJ-11-2022-0373
12. Chen, G., Zhao, S., Tan, P. et al. (2018) A comparative study of Ti‒6Al‒4V powders for additive manufacturing by gas atomization, plasma rotating electrode process and plasma atomization. Powder Technology, 333, 38‒46. DOI: https://doi.org/10.1016/j.powtec.2018.04.013
13. Yurtukan, E., Unal, R. (2022) Theoretical and experimental investigation of Ti alloy powder production using low-power plasma torches. Transact. of Nonferrous Metals Society of China, 32, 175‒191. DOI: https://doi.org/10.1016/S1003-6326(21)65786-2
14. Prokopov, V., Fialko, N., Sherenkovskaya, G. et al. (1993) Effect of the coating porosity on the processes of heat transfer under, gas-thermal atomization. Powder Metall. Met. Ceram., 32, 118–121. DOI: https://doi.org/10.1007/BF00560034
15. Yin, Z., Yu, D., Zhang, Q. et al. (2021) Experimental and numerical analysis of a reverse-polarity plasma torch for plasma atomization. Plasma Chem. Plasma Process., 41, 1471–1495. DOI: https://doi.org/10.1007/s11090-021-10181-8
16. Bobzina, K., Ernsta, F., Richardta, K. et al. (2008) Thermal spraying of cylinder bores wi‒-4443. DOI: https://doi.org/10.1016/j.surfcoat.2008.04.023
17. Fan, H., Kovacevic, R. (2004)A unified model of transport phenomena in gas metal arc welding including electrode, arc plasma and molten pool. J. Phys. D: Appl. Phys., 37, 2531‒2544. DOI: https://doi.org/10.1088/0022-3727/37/18/009
18. Sun, P., Fang, Z., Zhang, Y., Xia, Y. (2017) Review of the methods for the production of spherical Ti and Ti alloy powder. JOM, 69, 1853–1860. DOI: https://doi.org/10.1007/s11837-017-2513-5
19. Korzhyk, V., Khaskin, V., Grynyuk, A. et al. (2021) Comparing features in metallurgical interaction when applying different techniques of arc and plasma surfacing of steel wire on titanium. Eastern-European J. of Enterprise Technologies, 112(12), 6–17. DOI: https://doi.org/10.15587/1729-4061.2021.238634
20. Korzhyk, V.M., Grynyuk, A.A., Khaskin, V.Yu. et al. (2023) Khuan Plasma-arc technologies of additive surfacing (3D printing) of spatial metal products: application experience and new opportunities. The Paton Welding J., 11, 3‒20. DOI: https://doi.org/10.37434/tpwj2023.11.01
21. Korzhik, V. (1992) Theoretical analysis of the conditions required for rendering metallic alloys amorphous during gas-thermal spraying. III. Transformations in the amorphous layer during the growth process of the coating. Powder Metall. Met. Ceram., 31(11), 943‒948. DOI: https://doi.org/10.1007/BF00797621
22. Fialko, N., Prokopov, V., Meranova, N. et al. (1993) Thermal physics of gas thermal coatings formation processes. State of investigations. Fizika i Khimiya Obrabotki Materialov, 4, 83‒93.
23. Fialko, N., Prokopov, V., Meranova, N. et al. (1994) Temperature conditions of particle-substrate systems in a gas thermal deposition process. Fizika i Khimiya Obrabotki Materialov, 2, 59‒67.
24. Jing, H., Yu, Shi, Gang, Zh. et al. (2022) Minimizing defects and controlling the morphology of laser welded aluminium alloys using power modulation-based laser beam oscillation. J. Manufacturing Processes, 83, 49‒59. DOI: https://doi.org/10.1016/j.jmapro.2022.08.031
25. Fialko, N., Dinzhos, R., Sherenkovskii, J. (2021) Establishing patterns in the effect of temperature regime when manufacturing nanocomposites on their heat-conducting properties. Eastern- European J. of Enterprise Technologies, 4(5–112), 21‒26. DOI: https://doi.org/10.15587/1729-4061.2021.236915
26. Li, X., Cui, L., Shonkwiler, S. et al. (2023) Automatic characterization of spherical metal powders by microscope image analysis: a parallel computing approach. J. Iron Steel Res., 30, 2293–2300. DOI: https://doi.org/10.1007/s42243-022-00907-z
27. Appa Rao, G., Srinivas, M., Sarma, D. (2006) Effect of oxygen content of powder on microstructure and mechanical properties of hot isotatically pressed superalloy Inconel 718. Materials Sci. and Eng. A, 435(3), 84‒99. DOI: https://doi.org/10.1016/j.msea.2006.07.053
28. Liu, Y., Zhang, S., Zhang, L. et al. (2024) Effects of oxygen content on microstructure and creep property of powder metallurgy superalloy. Crystals, 14(4), 358. DOI: https://doi.org/10.3390/cryst14040358
29. Kvasnytskyi, V., Korzhyk, V., Kvasnytskyi, V. et al. (2020). Designing brazing filler metal for heat-resistant alloys based on NI3AL intermetallide. Eastern-European J. of Enterprise Technologies, 12(6), 6–19. DOI: https://doi.org/10.15587/1729-4061.2020.217819
30. Skorokhod, A., Sviridova, I., Korzhik, V. (1994) Structural and mechanical properties of polyethylene terephthalate coatings as affected by mechanical pretreatment of powder in the course of preparation. Mekhanika Kompozitnykh Materialov, 30(4), 455–463.
31. Gu, Y., Zhang, W., Xu, Y. et al. (2022) Stress-assisted corrosion behaviour of Hastelloy N in FLiNaK molten salt environment. NPJ Mater. Degrad., 6, 90. DOI: https://doi.org/10.1038/s41529-022-00300-x
32. Mao, D., Xie, Y., Meng, X. et al. (2024) Strength-ductility materials by engineering a coherent interface at incoherent precipitates Materials Horizons, 11(14), 3408–3419. DOI: https://doi.org/10.21203/rs.3.rs-3436553/v1
33. Ren, X.P., Li, H.Q., Guo H. et al. (2021) A comparative study on mechanical properties of Ti–6Al–4V alloy processed by additive manufacturing vs. traditional processing. Materials Sci. and Eng.: A, 817(10), 141384. DOI: https://doi.org/10.1016/j.msea.2021.141384
34. Mulay, R.P., Moore, J.A., Florando, J.N. et al. (2016) Microstructure and mechanical properties of Ti–6Al–4V: Mill-annealed versus direct metal laser melted alloys. Materials Sci. and Eng., 666(1), 43‒47. DOI: https://doi.org/10.1016/j.msea.2016.04.012
35. Gargi Roya, Raj Narayan Hajraa, Woo Hyeok Kima et al. (2024) Microstructural evolution and mechanical properties of Ti‒6Al‒4V alloy through selective laser melting: Comprehensive study on the effect of hot isostatic pressing (HIP). J. of Powder Materials, 31(1), 1‒7. DOI: https://doi.org/10.4150/KPMI.2024.31.1.1
36. Gupta, R.K., Anil Kumar, V., Christy Mathew, G. Sudarshan Rao (2016) Strain hardening of Titanium alloy Ti‒6Al‒4V sheets with prior heat treatment and cold working. Materials Sc. and Eng., 662, 537‒550. DOI: https://doi.org/10.1016/j.msea.2016.03.094

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Suggested Citation

V. Korzhyk, A. Grynyuk, O. Babych, O. Berdnikova, Ye. Illiashenko, O. Bushma (2025) Obtaining functionally-graded metal-matrix materials Ti‒6Al‒4V + WC in the process of 3D printing by the method of additive plasma-arc deposition. The Paton Welding J., 08, 29-36.

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