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Skripalenko MM, Karpov BV, Rogachev SO, Kaputkina LM, Romantsev BA, Skripalenko MN, Huy TB, Fadeev VA, Danilin AV, Gladkov YA. Simulation of the Kinematic Condition of Radial Shear Rolling and Estimation of Its Influence on a Titanium Billet Microstructure. MATERIALS (BASEL, SWITZERLAND) 2022; 15:7980. [PMID: 36431464 PMCID: PMC9697717 DOI: 10.3390/ma15227980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 11/07/2022] [Accepted: 11/08/2022] [Indexed: 06/16/2023]
Abstract
The finite element method (FEM) computer simulation of the three-high radial shear rolling of Ti-6Al-4V alloy round billets was conducted using QForm software. The simulation was performed for the MISIS-100T rolling mill's three passes according to the following rolling route: 76 mm (the initial billet diameter) →65 mm→55 mm→48 mm (the final billet diameter). The change in the total velocity values for the points on the radius of the 48 mm diameter billet was estimated while passing the rolls' draft. The relative increase in the accumulated strain was estimated for the same points. Then, experimental shear rolling was performed. Grain sizes of the α- and β-phases were estimated in the cross section of the final billet at the stationary stage of rolling. The grain size distribution histograms for different phases were plotted. An area was found in the billet's cross section in which the trend of change in the total velocity of the points changed. This area represented a neutral layer between the slowing peripheral segments of the billet and the accelerating central segments of the billet. Inside this neutral layer, the limits of the cylindrical surface radius value were estimated. Experimental radial shear rolling was performed to compare the experimental rolling results (the billet microstructure investigation) with the computer simulation results. The computer simulation obtained two estimations of the radius limits: 8-16 mm (based on the analysis of the total velocity change) and 12-16 mm (based on the accumulated strain's relative increment change). The experimental rolling obtained two more estimations of the radius limits: 8.4-19.5 mm and 11.3-19.7 mm-based on the results of the microstructure investigation. It was confirmed that varying the kinematic and deformation parameters of radial shear rolling allows regulation of the thickness of the peripheral fine-grain layer and the diameter of the central coarse-grain layer of the rolled billets.
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Affiliation(s)
- Mikhail M. Skripalenko
- Department of Metal Forming, National University of Science and Technology MISiS, Leninski Prospect 4, 119049 Moscow, Russia
| | - Boris V. Karpov
- Nauchno-Proizvodstvennyj Centr Obrabotka Metallov Davleniem Intitutskiy Proezd, 2, Zavoda Mosrentgen, 142771 Moscow, Russia
| | - Stanislav O. Rogachev
- Department of Physical Metallurgy and Physics of Strength, National University of Science and Technology MISiS, Leninskiy Prospekt 4, 119049 Moscow, Russia
| | - Liudmila M. Kaputkina
- Department of Metal Forming, National University of Science and Technology MISiS, Leninski Prospect 4, 119049 Moscow, Russia
| | - Boris A. Romantsev
- Department of Metal Forming, National University of Science and Technology MISiS, Leninski Prospect 4, 119049 Moscow, Russia
| | - Mikhail N. Skripalenko
- Department of Metal Forming, National University of Science and Technology MISiS, Leninski Prospect 4, 119049 Moscow, Russia
| | - Tran Ba Huy
- Viettel Aerospace Institute, Hanoi 13112, Vietnam
| | - Viktor A. Fadeev
- Department of Metal Forming, National University of Science and Technology MISiS, Leninski Prospect 4, 119049 Moscow, Russia
| | - Andrei V. Danilin
- Department of Metal Forming, National University of Science and Technology MISiS, Leninski Prospect 4, 119049 Moscow, Russia
| | - Yuri A. Gladkov
- Metal Forming Department, Bauman Moscow State Technical University, Vtoraya Baumanskaya Street, 5/22, 105005 Moscow, Russia
- QuantorForm LLC, 123308 Moscow, Russia
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