Issues »  Volume 47, Issue 11

Microstructure Evolution of a Steel Bar during FEM Simulation of Radial-Shear Broaching and Subsequent Drawing

I. E. Volokitina, E. A. Panin

Karaganda Industrial University, 30 Republic Ave., 101400 Temirtau, Republic of Kazakhstan

Received: 20.08.2024; final version - 01.11.2024. Download: PDF

The paper presents the results of finite element modelling of the microstructure evolution in the implementation of the combined technology of radial-shear broaching and subsequent drawing by JMAK and cellular automata methods. The analysis of the results shows that the simulation results have a high degree of convergence with each other; so, it can be recommended to use any of these methods to obtain information about the grain sizes. Workpiece deformation with a diameter of 30 mm to 20 mm at ambient temperature is the most effective method, since it allows refining the initial grain more than 3 times on the workpiece surface, from 25 μm to 8 μm. At the same time, workpiece deformation with a diameter of 30 mm to 23 mm at ambient temperature gives a twofold refinement of the initial grain, from 25 μm to 12 μm. The processing of the central area of the workpiece in all considered models is insignificant; it reaches only a 35%-reduction under the most optimal conditions.

Key words: steel, drawing, radial-shear broaching, severe plastic deformation, bar.

URL: https://mfint.imp.kiev.ua/en/abstract/v47/i11/1199.html

DOI: https://doi.org/10.15407/mfint.47.11.1199

PACS: 06.60.Vz, 46.70.Hg, 61.72.Mm, 81.20.Hy, 81.20.Wk, 81.40.Ef, 83.50.Uv

Citation: I. E. Volokitina and E. A. Panin, Microstructure Evolution of a Steel Bar during FEM Simulation of Radial-Shear Broaching and Subsequent Drawing, Metallofiz. Noveishie Tekhnol., 47, No. 11: 1199–1213 (2025)

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