Investigating the Effect of Process Order and Die Shape on the Mechanical Properties of Copper in Combined Severe Plastic Deformation of Twist Extrusion and ECAP

Document Type : Research Paper

Authors

1 Department of Mechanical Engineering, Faculty of Engineering, Islamic Azad University, Ayatollah Amoli Branch, Amol, Iran

2 Department of Mechanical Engineering, Faculty of Engineering, Noshirvani University of Technology, Babol, Iran

3 Department of Materials and Industrial Engineering, Faculty of Engineering, Noshirvani University of Technology, Babol, Iran

Abstract

Investigating production techniques and enhancing the mechanical properties of fine-grained materials has been a focus of extensive research in recent years. The production of fine-grained materials free from impurities and porosity through severe plastic deformation methods has made these techniques increasingly appealing. In this research, the combined extrusion process was carried out using a die that included two twisting and ECAP channels in two modes: direct and reverse. The forming force, strain, and hardness generated in the specimen were determined using finite element analysis, 2D/3D DEFORM software, and the Vickers micro-hardness test. It was found that the maximum value of the forming force in the reverse process has increased by 30%, while the standard deviation of the strain and hardness values measured in the cross-section of the specimen decreased by 73% and 56%, respectively. This created much more uniform strains in one process passes, which is one of the main goals of the severe plastic deformation method. Evaluating the effect of design variable sizes showed that the average forming force and the maximum strain increased by 48% and 44%, respectively, as the ratio of the large diameter to the small diameter, m, of the elliptical region in the twisting channel of the die increased. Additionally, as the twist angle θ increased, these parameters rose by 35% and 63%, respectively, while an increase in the internal angle of ECAP, α, led to a 33% reduction in the average forming force and a 22% decrease in the maximum strain generated.

Keywords

References

[1]    Huang, Y., & Langdon, T. G. (2013). Advances in ultrafine-grained materials. Materials Today, 16(3), 85-93. https://doi.org/10.1016/j.mattod.2013.03.004
[2]    Pande, C. S., & Cooper, K. P. (2009). Nanomechanics of Hall–Petch relationship in nanocrystalline materials. Progress in Materials Science, 54(6), 689-706. https://doi.org/10.1016/j.pmatsci.2009.03.008
[3]    Roven, H. J. (2007, November 3-9). Nanostructured metals by SPD-technology and commercialization. In The Second Chinese-Norwegian Symposium on Light Metals, Shanghai, China.
[4]    Rosochowski, A. (2004). Processing metals by severe plastic deformation. Solid State Phenomena, 101, 13-22. https://doi.org/10.4028/www.scientific.net/SSP.101-102.13
[5]    Zhu, C. F., Du, F. P., Jiao, Q. Y., Wang, X. M., Chen, A. Y., Liu, F., & Pan, D. (2013). Microstructure and strength of pure Cu with large grains processed by equal channel angular pressing. Materials & Design (1980-2015), 52, 23-29. https://doi.org/10.1016/j.matdes.2013.05.029
[6]    Xue, K., Luo, Z., Xia, S., Dong, J., & Li, P. (2024). Study of microstructural evolution, mechanical properties and plastic deformation behavior of Mg-Gd-Y-Zn-Zr alloy prepared by high-pressure torsion. Materials Science and Engineering: A, 891, 145953. https://doi.org/10.1016/j.msea.2023.145953
[7]    Samadzadeh, M., Toroghinejad, M. R., Mehr, V. Y., Asgari, H., & Szpunar, J. A. (2024). Mechanical, microstructural, and textural evaluation of aluminum-MWCNT composites manufactured via accumulative roll bonding at ambient condition. Materials Chemistry and Physics, 315, 128891. https://doi.org/10.1016/j.matchemphys.2024.128891
[8]    Noor, S. V., Eivani, A. R., Jafarian, H. R., & Mirzaei, M. (2016). Inhomogeneity in microstructure and mechanical properties during twist extrusion. Materials Science and Engineering: A, 652, 186-191. https://doi.org/10.1016/j.msea.2015.11.056
[9]    Naik, M. V., Narasaiah, N., Chakravarthy, P., & Kumar, R. A. (2024). Microstructure and mechanical properties of friction stir processed Zn-Mg biodegradable alloys. Journal of Alloys and Compounds, 970, 172160. https://doi.org/10.1016/j.jallcom.2023.172160
[10]  Wang, C., Li, F., Li, Q., Li, J., Wang, L., & Dong, J. (2013). A novel severe plastic deformation method for fabricating ultrafine grained pure copper. Materials & Design, 43, 492-498. https://doi.org/10.1016/j.matdes.2012.07.047
[11]  Djavanroodi, F., Ebrahimi, M., Rajabifar, B., & Akramizadeh, S. (2010). Fatigue design factors for ECAPed materials. Materials Science and Engineering: A, 528(2), 745-750. https://doi.org/10.1016/j.msea.2010.09.080
[12]  Kang, D. H., & Kim, T. W. (2010). Mechanical behavior and microstructural evolution of commercially pure titanium in enhanced multi-pass equal channel angular pressing and cold extrusion. Materials & Design, 31, S54-S60. https://doi.org/10.1016/j.matdes.2010.01.004
[13]  Nakashima, K., Horita, Z., Nemoto, M., & Langdon, T. G. (2000). Development of a multi-pass facility for equal-channel angular pressing to high total strains. Materials Science and Engineering: A, 281(1-2), 82-87. https://doi.org/10.1016/s0921-5093(99)00744-3 
[14]  Latypov, M. I., Alexandrov, I. V., Beygelzimer, Y. E., Lee, S., & Kim, H. S. (2012). Finite element analysis of plastic deformation in twist extrusion. Computational Materials Science, 60, 194-200. https://doi.org/10.1016/j.commatsci.2012.03.035
[15]  Jiang, J. F., Ying, W. A. N. G., Liu, Y. Z., Xiao, G. F., & Hua, L. I. (2021). Microstructure and mechanical properties of 7005 aluminum alloy processed by one-pass equal channel reciprocating extrusion. Transactions of Nonferrous Metals Society of China, 31(3), 609-625. https://doi.org/10.1016/S1003-6326(21)65523-1
[16]  Gupta, B., Kapoor, A., Singhal, A., & Agarwal, K. M. (2021, July). Effect of die design parameters on materials processed by equal channel angular pressing. In IOP Conference Series: Materials Science and Engineering (Vol. 1168, No. 1, p. 012005). IOP Publishing. https://doi.org/10.1088/1757-899X/1168/1/012005
[17]  Muralidharan, S., & Iqbal, U. M. (2022). Experimental studies and optimization of process variables in multi-angular twist extrusion (MATE) of Cu-Cr-Zr alloy. Materials Today: Proceedings, 68, 1835-1844. https://doi.org/10.1016/j.matpr.2022.07.411
[18]  Attarilar, S., Gode, C., Mashhuriazar, M. H., & Ebrahimi, M. (2021). Tailoring twist extrusion process; the better strain behavior at the lower required loads. Journal of Alloys and Compounds, 859, 157855. https://doi.org/10.1016/j.jallcom.2020.157855
[19]  Zamani, S. A., Bakhshi-Jooybari, M., Gorji, H., Hosseinipour, S. J., & Hoseinzadeh-Amirdehi, M. (2021). Investigation of the effect of die parameters on the mechanical properties of pure copper in The combined process of torsional extrusion and ECAP. Journal of Stress Analysis, 5(2), 83-99. https://doi.org/10.22084/jrstan.2021.23800.1174
[20]  Kočiško, R., Kvačkaj, T., & Kováčová, A. (2014). The influence of ECAP geometry on the effective strain distribution. Journal of Achievements in Materials and Manufacturing Engineering, 62, 25-30. https://doi.org/10.4028/www.scientific.net/AMR.1127.135
[21]  Bisadi, H., Mohamadi, M. R., Miyanaji, H., & Abdoli, M. (2013). A modification on ECAP process by incorporating twist channel. Journal of Materials Engineering and Performance, 22, 875-881. https://doi.org/10.1007/s11665-012-0323-z
[22]  Wang, C., Li, F., Li, Q., Li, J., Wang, L., & Dong, J. (2013). A novel severe plastic deformation method for fabricating ultrafine grained pure copper. Materials & Design, 43, 492-498. https://doi.org/10.1016/j.matdes.2012.07.047
[23]  Wang, C., Li, F., Lu, H., Yuan, Z., & Chen, B. (2013). Optimization of structural parameters for elliptical cross-section spiral equal-channel extrusion dies based on grey theory. Chinese Journal of Aeronautics, 26(1), 209-216. https://doi.org/10.1016%2Fj.cja.2012.12.012
[24]  Heydari Pebdani, F., Nourbakhsh, S. H., & Akbaripanah, F. (2022). Effects of the geometric profile of twist channel angular pressing (TCAP) on the deformation behaviors and microstructure evolution of AL7050 alloy. Journal of Stress Analysis, 6(2), 85-95. https://doi.org/10.22084/jrstan.2022.26081.1207
[25]  Hosseinzadeh, M., & Mouziraji, M. G. (2016). An analysis of tube drawing process used to produce squared sections from round tubes through FE simulation and response surface methodology. The International Journal of Advanced Manufacturing Technology, 87(5), 2179-2194. https://doi.org/10.1007/s00170-016-8532-5
[26]  Djavanroodi, F., Zolfaghari, A. A., Ebrahimi, M., & Nikbin, K. M. (2013). Equal channel angular pressing of tubular samples. Acta Metallurgica Sinica (English Letters), 26, 574-580. https://doi.org/10.1007/s40195-013-0102-3
Iranian Journal of Materials Forming
Volume 11, Issue 2
April 2024
Pages 46-61

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