Moscow Polytechnic University (Moscow Polytech), Moscow, Russia

A. V. Fomin, Candidate of Technical Sciences, Associate Professor, e-mail: fominmisis84@mail.ru

V. V. Ovchinnikov, Doctor of Technical Sciences, Professor, e-mail: vikov1956@mail.ru

National University of Science and Technology MISIS, Moscow, Russia
V. P. Romanenko, Candidate of Technical Sciences, Professor, e-mail: romanenko-misis@yandex.ru
A. S. Aleshchenko, Candidate of Technical Sciences, Associate Professor, e-mail: judger85@mail.ru
S. P. Galkin, Doctor of Technical Sciences, Professor, e-mail: glk-omd@yandex.ru

The present paper sets forth the findings of a study undertaken to examine alterations in macrostructure during the combination of the rotary piercing and upsetting methods, as applied to aluminium samples of technical purity. The present study demonstrates that the spiral-shaped macrostructure, which is induced by the rotary piercing method, is maintained during subsequent deposition by plane-parallel plates on the press. The angle of inclination of the structural fibre in the proximity of the side surface of the forging is found to be γ ≈ 7 degrees. A comparison of the mechanical properties of T-grade wheel steel forgings obtained from different types of billets (solid billet, hollow (drilling) and pierced billets at feed angles β = 12° and β = 14°) has been undertaken. The results demonstrate that the preceding deformation (piercing in a helical rolling mill) is inherited and reflected in the mechanical properties of the forgings, particularly in the indices of relative contraction and impact toughness in the radial and tangential directions.

This work was financially supported by the Moscow Polytechnic University within the framework of the grant named after Pyotr Kapitsa.

1. Parshin V. A. et al. Investigation of the Effect of Deformation Conditions on the Solid-Rolled Wheels Mechanical Properties. Forging and Stamping Production. 1968. № 10. pp. 8–9.
2. Potapov I. N., Polukhin P. I. Technology of Screw Rolling. 2nd ed., rev., add. Moscow: Metallurgy, 1990. 343 p.
3. Galkin S. P., Kharitonov E. A., Romanenko V. P. Screw Rolling for Pipe-Blank Production. Steel in Translation. 2009. Vol. 39, Iss. 8. pp. 700–703.
4. Galkin S. P. Trajectory of Deformed Metal as Basis for Controlling the Radial-Shift and Screw Rolling. Stal. 2004. Iss. 7. pp. 63–66.
5. Galkin S. P., Gamin Yu. V., Aleshchenko A. S., Romantsev B. A. Modern Development of Elements of Theory, Technology and Mini-Mills of Radial-Shear Rolling. Chernye Metally. 2021. No. 12. pp. 51–58.
6. Nikulin A. N. Screw Rolling. Stresses and Deformations. Moscow: Metallurgizdat, 2015. 380 p.
7. Galkin S. P., Kharitonov E. A., Romanenko V. P. Radial-Shear Rolling as a New High-Efficient Method for Metal Forming. Progressive Metal Forming Technologies. A Manual. Moscow : IRIAS, 2009. 600 p.
8. Gamin Y., Akopyan T., Koshmin A., Dolbachev A., Aleshchenko A., Galkin S., Romantsev B. Investigation of the
Microstructure Evolution and Properties of A1050 Aluminum Alloy During Radial-Shear Rolling Using FEM Analysis. The International Journal of Advanced Manufacturing Technology. 2020. Vol. 108. pp. 695–704.
9. Fomin A. V., Aleshchenko A. S., Maslenniko I. M., Galkin S. P., Nikulin A. N. Structural and Analytical Evaluation of the Strain Intensity and its Components During Cross-Roll Piercing at Different Feed Angles. Metallurgist. 2019. Vol. 63. pp. 477–486.
10. Akopyan T. K., Belov N. A., Aleshchenko A. S., Galkin S. P., Gamin Y. V., Gorshenkov M. V., Cheverikin V. V., Shurkin P. K. Formation of the Gradient Microstructure of a New Al Alloy Based on the Al – Zn – Mg – Fe – Ni System Processed by Radial-Shear Rolling. Materials Science and Engineering: A. 2019. Vol. 746. pp. 134–144.
11. Akopyan T. K., Gamin Y. V., Galkin S. P., Prosviryakov A. S., Aleshchenko A. S., Noshin M. A., Koshmin A. N., Fomin A. V. Radial-Shear Rolling of High-Strength Aluminum Alloys: Finite Element Simulation and Analysis of Microstructure and Mechanical Properties. Materials Science and Engineering: A. 2020. Vol. 786. 139424.

12. Galkin S. P., Stebunov S. A., Aleschenko A. S., Vlasov A. V., Patrin P. V., Fomin A. V. Simulation and Experimental Evaluation of Circumferential Fracture Conditions in Hot Radial-Shear Rolling. Metallurgist. 2020. Vol. 64. pp. 233–241.
13. Gamin Y. V., Romantsev B. A., Pashkov A. N., Patrin P. V., Bystrov I. A., Fomin, A. V., Kadach M. V. Obtaining Hollow Semifinished Products Based on Copper Alloys for Electrical Purposes by Means of Screw Rolling. Russian Journal of Non-Ferrous Metals. 2020. Vol. 61, Iss. 2. pp. 162–171.
14. Galkin S. P., Aleshchenko A. S., Gamin Y. V. Development and Experimental Testing of the Technology for Producing Deformed Bars of Alloy D16T from Continuously Casting Billets of Small Diameter with Low Elongation Ratios. Russian Journal of Non-ferrous Metals. 2022. Vol. 63. pp. 328–335.
15. Tselikov A. I., Barbarich M. V., Vasilchikov M. V., Granovsky S. P., Zhukevich-Stosha E. A. Special Rolling Mills. Moscow: Metallurgiya, 1971. 336 p.
16. Okhrimenko Ya. M., Tyurin V. A., Lyakhov V. V. New Options for Forging Forgings from Hollow Ingots. “Theory and Technology of Metalworking by Pressure” Proceedings. Moscow: Metallurgiya, 1975. pp. 187–191.
17. Tarnovsky I. J., Trubin V. P., Zlatkin M. G. Free Forging on Presses. Moscow: Mashinostroenie, 1967. 328 p.
18. Romanenko V. P., Fomin A. V., Nikulin A. N. Effect of Preliminary Deformation of the Cast Semifinished Product on the Service Properties of Wheel Steel. Metallurgist. 2013. Vol. 57, Iss. 3-4. pp. 303–309.
19. Romanenko V. P., Fomin A. V., Begnarskii V. V., Yandimirov A. A., Nikulin A. N. Deformation Action of Screw Rolling on a Cast Wheel Billet. Metallurgist. 2013. Vol. 56, Iss. 9–10. pp. 753–759.
20. Galkin S. P., Aleschenko A. S., Romantsev B. A., Gamin Yu. V., Iskhakov R. V. Effect of Preliminary Deformation of Continuously Cast Billets by Radial-Shear Rolling on the Structure and Properties of Hot-Rolled Chromium-Containing Steel Pipes. Metallurgist. 2021. Vol. 65. pp. 185–195.
21. Romanenko V. P., Fomin A. V., Sevastianov A. A., Filippov G. A., Livanova O. V., Ilyukhin D. S. Effect of Screw Piercing on the Structure and Mechanical Properties of a Continuously Cast Blank Made of Wheel Steel. Metallurgist. 2024. Vol. 67. pp. 32–37.
22. Kharitonov E. A., Potapov I. N., Volshonok I. Z. et al. The influence of Radial Shear Rolling on the Quality of Semi-Finished Titanium Alloys. Tsvetnye Metally. 1992. No. 5. pp. 56–57.
23. Romanenko V. P., Fomin A. V., Sevast’yanov A. A., Nikulin A. N. Investigation of Mechanical Properties of Railway Wheels Produced From Billet Pierced in Helical Rolling Mill. Metallurgist. 2018. No. 6. pp. 73–77.
24. Smirnov V. S., Anisiforov V. P., Vasilchikov M. V., Granovsky S. P., Kazanskaya I. I., Kuzmin A. D., Mekhov N. V., Pobedin I. S. Transverse Rolling in Mechanical Engineering. Moscow: Mashgiz, Leningradskoe otdeleniye, 1957. 375 p.
25. Miklyaev G. P., Neshpor G. S., Kudryashov V. G. Kinetics of Destruction, Moscow: Metallurgiya, 1979. 278 p.
26. Smirnov V. S., Grigoriev A. K., Pakudin V. P., Sadovnikov B. M. Resistance to Deformation and Plasticity of Metals (During Pressure Treatment), Moscow: Metallurgiya, 1975. 272 p.
27. Okhrimenko Ya. M., Tyurin V. A. Uneven Deformation During Forging. Moscow: Mashinostroenie, 1969. 183 p.
28. Komkov N. A., Nikulin A. N., Romanenko V. P., Fomin A. V. Physical-Mechanical Model of Metal Plastic Deformation in the Course of Billets Shortening. Problems of Ferrous Metallurgy and Materials Science. 2013. No. 2. pp. 5–17.