The evolution of the compaction process and the deformed state of porous blanks during their hot forging in the open die

Authors

DOI:

https://doi.org/10.20535/2521-1943.2023.7.3.292713

Keywords:

powder metallurgy, hot forging, deformation, density, modeling, finite element method, forging

Abstract

The article presents the results of the study of the evolution of the deformed state of the workpieces, the energetic parameters of the process and the distribution of porosity over the volume of the forging at all stages of hot forging of porous powder forgings in an open die. Modeling of the process was carried out using the finite element method using the DEFORM 2D/3D software complex. As a result of the simulation, it was found that at the initial stage of the process, the blank is mainly compacted with minimal radial flow of the material. Noticeable flow of metal into the groove groove area begins only when the forging material reaches an average relative density exceeding 90%. A significantly different nature of the distribution of axial er and radial ez deformations over the volume of the forging was noted. A zone with increased levels of values of axial deformations is formed in the central layer of the forging, equidistant from the upper and lower surfaces of the die cavity, and the values of radial deformations decrease with distance from the zone bordering the free side surface of the workpiece in the radial (to-center) direction. The minimum values of ez and er appear in the upper and lower angular stagnant zones of the forging. It is shown that the graph of the dependence of the deformation force on the displacement of the punch is marked by the presence of at least three characteristic sections due to the relationship between the processes of compaction and forging shape change at each stage of the process.

References

  1. Yu. G. Dorofeev, B. G. Gasanov, V. Yu. Dorofeev, V. N. Mishchenkov and V. N. Miroshnikov, Industrial technology of hot pressing of powder products. Moscow: Metallurgy, 1990, 206 p.
  2. V. M. Gorokhov, E. A. Doroshkevich, A. M. Efimov and E. V. Zvonarev, Volumetric stamping of powder materials. Minsk: Science and technology, 1993, 272 p.
  3. A. A. Hendrickson, P. M. Machmeier and D. W. Smith, “Impact forging of sintered steel preforms”, Powder Metallurgy, vol. 43, no. 4, pp. 327–344, 2000. DOI: https://doi.org/10.1179/003258900666050.
  4. J. W. Qui, Y. Liu, Y. B. Liu, B. Liu, B. Wang, E. Ryba and H. P. Tang, “Microstructures and mechanical properties of titanium alloy connecting rod made by powder forging process”, Materials and Design, vol. 33, pp. 213–219, 2012. DOI: https://doi.org/10.1016/j.matdes.2011.07.034.
  5. G. Sutradhar, A. K. Jha and S. Kumar, “Production of sinter-forged components”, Journal of Materials Processing Technology, vol. 41, no. 2, pp. 143–169, 1994. DOI: https://doi.org/10.1016/0924-0136(94)90058-2.
  6. G. T. Brown, “The powder-forging process: a review of the basic concept and development prospects”, Powder Metallurgy, vol. 14, no. 27, pp. 124–143, 1971. DOI: https://doi.org/10.1179/pom.1971.14.27.010.
  7. E. Ilia, M. O'Neill, K. Tutton, G. Lanni, S. Letourneau and M. Haehnel, “Benchmarking the industry: powder forging makes a better connecting rod”, in SAE 2005 Transactions Journal of Materials and Manufacturing, 2005, pp. 340–352. DOI: https://doi.org/10.4271/2005-01-0713.
  8. S. Wang, Y. K. Wu, H. L. Wang and F. Jiang, “Investigation on the hot-deformation behaviour of sintered and forged specimens to improve the forging safety of powder-forged products”, Powder Metallurgy, vol. 64, no. 4, pp. 273-282, 2021. DOI: https://doi.org/10.1080/00325899.2021.1892990.
  9. G. A. Bagliuk, “Increasing the efficiency of compaction of porous blanks due to intensification of shear deformations”, Rheology, structure, properties of powder and composite materials. Collection of scientific works, pp. 35–48, 2004.
  10. V. A. Pavlov and M. I. Nosenko, “Effect of the stress-strain state on the densification of metal powders (powder preforms) during hot forging”, Powder Metallurgy and Metal Ceramics, vol. 31, no. 2, pp. 103–107, 1992. DOI: https://doi.org/10.1007/BF00794041.
  11. H. F. Fischmeister, B. Arén and K. E. Easterling, “Deformation and densification of porous preforms in hot forging”, Powder Metallurgy, vol. 14, no. 27, pp. 144–163, 1971. DOI: https://doi.org/10.1179/pom.1971.14.27.011.
  12. V. A. Pavlov and M. I. Nosenko, “Effect of hot working on the formation of structure and properties in sintered metals”, Powder Metallurgy and Metal Ceramics, vol. 27, no. 2, pp. 103–107, 1988. DOI: https://doi.org/10.1007/BF00802731.
  13. R. C. Buckingham, C. Argyrakis, M. C. Hardy and S. Birosca, “The effect of strain distribution on microstructural developments during forging in a newly developed nickel base superalloy”, Materials Science & Engineering: A, vol. 654, pp. 317–328, 2016. DOI: https://doi.org/10.1016/j.msea.2015.12.042.
  14. G. A. Baglyuk, “Influence of deformation parameters on the structure and properties of hot-stamped powder materials”, Processing of materials by pressure, no. 1 (26), pp. 139–145, 2011. Available: http://www.dgma.donetsk.ua/science_public/omd/1(26)-2011/article/11BGAFPM.pdf.
  15. Yu. A. Shishkina, G. A. Baglyuk, V. S. Kurikhin and D. G. Verbylo, “Effect of the Deformation Scheme on the Structure and Properties of Hot-Forged Aluminum-Matrix Composites”, Powder Metallurgy and Metal Ceramics, vol. 55, no. 1-2, pp. 5–11, 2016. DOI: https://doi.org/10.1007/s11106-016-9773-4.
  16. V. Yu. Dorofeev and S. N. Egorov, Interparticle fusion during the formation of powder hot-deformed materials. Moscow: Metallurgizdat, 2003, 152 p.
  17. G. A. Baglyuk, “Comparison of the power parameters in the hot-pressing of porous semifinished products with different schemes of deformation”, Powder Metall Met Ceram, vol. 37, no. 9-10, pp. 467–470, 1998. DOI: https://doi.org/10.1007/BF02675805.
  18. Forging and stamping: Handbook, vol. 2: Hot stamping, E. I. Semenov Eds. Moscow: Mechanical Engineering, 1986, 592 p.
  19. G. A. Baglyuk and V. L. Yurchuk, “Calculation of the plastic flow of a porous material in open-die stamping”, Powder Metall Met Ceram, vol. 36, no. 7-8, pp. 353–358, 1997. DOI: https://doi.org/10.1007/BF02675992.
  20. G. A. Baglyuk, “Modeling deformation of a porous blank in open-die forging”, Powder Metall Met Ceram, vol. 36, no. 9-10, pp. 459–461, 1997. DOI: https://doi.org/10.1007/BF02680491.
  21. S. Kobayashi, S.-I. Oh and T. Altan, Меtal forming and thе finitе-еlеmеnt mеthod. Nеw York, NY: Oxford University Press, 1989, 377 p. DOI: https://doi.org/10.1093/oso/9780195044027.001.0001.
  22. S. Shima and M. Oyane, “Plasticity Theory for Porous Metals”, International Journal of Mechanical Sciences, vol. 18, no. 6, pp. 285–291, 1976. DOI: https://doi.org/10.1016/0020-7403(76)90030-8.
  23. A. R. Khoei, Computational Plasticity in Powder Forming Processes. Elsevier, 2005, 449 p.
  24. G. E. Goncharenko, E. P. Filipovich and E. A. Doroshkevich, “Study of the process of upsetting sintered billets”, Metallurgy, no. 8, pp. 151–155, 1976.
  25. G. A. Baglyuk, “Free upsetting of heated porous cylindrical specimens”, Powder Metallurgy and Metal Ceramics, vol. 27, no. 7, pp. 532–535, 1988. DOI: https://doi.org/10.1007/BF00799984.
  26. T. L. Guest, M. Negm and R. Davies, “Metal flow and densification in the die-forging of porous preforms”, Powder Metall, vol. 16, no. 32, pp. 314–326, 1973. DOI: https://doi.org/10.1179/pom.1973.16.32.009.

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Published

2023-12-27

How to Cite

[1]
G. Baglyuk and S. Kyryliuk, “The evolution of the compaction process and the deformed state of porous blanks during their hot forging in the open die”, Mech. Adv. Technol., vol. 7, no. 3 (99), pp. 350–355, Dec. 2023.

Issue

Vol. 7 No. 3 (99) (2023)

Section

Up-to-date machines and the technologies of mechanical engineering

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Copyright (c) 2023 Геннадій Баглюк, Степан Кирилюк

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