A comparative Study between deformation behavior of pure aluminum in CGP and RCS by finite element analysis
Document Type : Research Paper
Abstract
Severe plastic deformation is one of the most effective methods for applying high plastic strain to metallic specimen. Constrained Groove Pressing (CGP) and Repetitive Corrugation and straightening (RCS) are preeminent in this field. There are several similarities between these two processes, however, there are some differences in applied strain. Consequently, the deformation process is really crucial in case of method. In this study, AA 1070 Aluminum alloy has been utilized in order to investigate the behavior of deformation using stated methods. Therefore, filling of the die, effective strain distribution and required load to perform the process were analyzed using Finite Element Analysis (FEA) for a single pass of deformation. To evaluate homogeneity of applied deformation, inhomogeneity index of effective strain was considered. The simulations are carried out using commercially available DEFORM-3DTM software and for validation, the results were compared to former reported researches. It was revealed that the amount of filling of the die was greater for CGP in comparison with RCS. As a result, it is feasible to repeat the process in order to obtain high plastic strain. Furthermore, the deformed specimen experienced more plastic strain for CGP. In addition, this strain distribution was imposed homogeneously thus the mechanical properties can be improved uniformly in the specimen.
فردی، مهدی (1391). تکنولوژی و کارگاه تغییر شکل نیمساخته (2). شرکت چاپ و نشر کتابهای درسی ایران. (چاپ دوم). تهران.
Hosford, W. F. & Caddell, R. M. (2011). “Metal Forming: Mechanics and Metallurgy”, 4th Edition. USA: Cambridge University Press.
Valiev, R. Z., Islamgaliev, R. K., Alexandrov, I. V. (2000). “Bulk nanostructured materials from severe plastic deformation,” Progress in Materials Science, vol. 45, pp. 103–189.
بیسادی، حسین، راستگو، عباس، پایگانه، غلامحسین، زینالی، ابراهیم و قهرمانی، احمد. (1388). "مقایسه کرنش پلاستیکی اعمال شده توسط فرآیندهای ECAP و HPT به روش المان محدود". دهمین کنفرانس مهندسی ساخت و تولید ایران، دانشگاه صنعتی نوشیروانی بابل، 10-12 اسفند.
Saito, Y., Tsuji, N., Utsunomiya, H., Sakai, T. & Hong, R. G. (1998). “Ultra-fine grained bulk aluminum produced by accumulative roll-bonding (ARB) process,” Scripta Materialia, vol. 39, pp. 1221–1227.
Zhu, Y. T., Lowe, T. C., Jiang, H. & Huang, J. (2001). U.S. Patent No. 6197129 B1.
Huang, J. Y., Zhu, Y. T., Jiang, H. & Lowe, T. C. (2001). “Microstructure and dislocation configurations in nanostructured Cu processed by repetitive corrugation and straightening”. Acta Material, vol. 49, pp.1497-1505.
راستیطلب، عبدالرضا و قلندری، لاله. (1389). "ایجاد تغییر شکل پلاستیک بسیار شدید توسط فرآیندهای موج دار کردن و صاف کردن متوالی و ارزیابی خواص مکانیکی". کنفرانس ملی آشنایی با فناوریهای روز در زمینه مهندسی مکانیک، دانشگاه آزاد واحد شیراز، 4-5 اسفند.
Scientific Forming Technologies Corporation. (2007). “DEFORM-3D Version 6.1 user’s manual”.
Li, S., Brouke, M. A. M., Beyerlein, I. J., Alexander, D. J. & Clausen, B. (2004). “Finite element analysis of the plastic deformation zone and working load in equal channel angular extrusion”. Materials Science Engineering: A, vol.382, pp. 217-236.
Ghazani, M.S. & Vajd, A. (2014). “Finite element analysis of the groove pressing of aluminum alloy”. Modeling and Numerical Simulation of Material Science, vol. 4, pp. 32-36.
. (2014). A comparative Study between deformation behavior of pure aluminum in CGP and RCS by finite element analysis. Metallurgical Engineering, 17(53), 25-32.
MLA
. "A comparative Study between deformation behavior of pure aluminum in CGP and RCS by finite element analysis", Metallurgical Engineering, 17, 53, 2014, 25-32.
HARVARD
. (2014). 'A comparative Study between deformation behavior of pure aluminum in CGP and RCS by finite element analysis', Metallurgical Engineering, 17(53), pp. 25-32.
CHICAGO
, "A comparative Study between deformation behavior of pure aluminum in CGP and RCS by finite element analysis," Metallurgical Engineering, 17 53 (2014): 25-32,
VANCOUVER
. A comparative Study between deformation behavior of pure aluminum in CGP and RCS by finite element analysis. Metallurgical Engineering. 2014;17(53):25-32 (In Persian).