Experimental and numerical aspects regarding lead alloy plastic deformation
Keywords:
plastic deformation, extrusion, die angle, finite element methodAbstract
The aim of this paper is to present an experimental and finite element analysis (FEA) of the cold forward extrusion of lead alloy. The influence of die angle, reduction ratio and ram speed on the extrusion force during the extrusion process was investigated. In order to determine the deformation flow patterns, square grids were scribed on the meridional plane of one of the two matching halves of the splitted-lead specimens. A finite element analysis (FEA) of the cold forward extrusion process was undertaken in parallel with the experimental programme. The flow curve of lead alloy was determined by torsion tests and data were used in numerical analysis. The FEA simulation was carried out using MSC SuperForm, FEA software, specifically produced for metal forming simulation. Data obtained from the FE model included extrusion force, effective stress and strain and material deformation flow. The data obtained by numerical simulation confirm theoretical and experimental results.
References
SCHIKORRA, M., DONATI, L., TOMESANI, L., TEKKAYA, A.E., Microstructure analysis of aluminum extrusion: Prediction of microstructure on AA6060 alloy, J. Mater. Proc. Tech., 201, pp. 156-162, 2008.
MA, X., DEROOIJ, M.B., SCHIPPER, D.J., Modelling of contact and friction in aluminium extrusion, Tribology International, 43, pp. 1138-1144, 2010.
AJIBOYE, J.S., ADEYEMI, M.B., Effects of die land on the cold extrusion of lead alloy, Journal of Materials Processing Technology, 171, pp. 428-436, 2006.
ONUH, S.O., EKOJA, M., ADEYEMI, M.B., Effects of die geometry and extrusion speed on the cold extrusion of aluminium and lead alloys, J. Mater. Proc. Tech., 132, pp. 274-285, 2002.
TIERNAN, P., HILLERY, M.T., DRAGANESCU, B., GHEORGHE, M., Modelling of cold extrusion with experimental verification, Journal of Materials Processing Technology, 168, pp. 360-366, 2005.
SOLOMON, N., SOLOMON, I., Effect of die shape on the metal flow pattern during direct extrusion process, Revista de Metalurgia, 46, pp. 396-404, 2010.
CHEN, D.-C., SYU, S.-K., WU, C.-H., LIN, S.-K., Investigation into cold extrusion of aluminum billets using three-dimensional finite element method, Journal of Materials Processing Technology, 192-193, pp. 188-193, 2007.
LI, L., ZHOU, J., DUSZCZYK, J., Prediction of temperature evolution during the extrusion of 7075 aluminium alloy at various ram speeds by means of 3D FEM simulation, Journal of Materials Processing Technology, 145, pp. 360–370, 2004.
NANHAI, H., KEZHI, L., Numerical design of the die land for shape extrusion, J. Mater. Proc. Tech., 101, pp. 81-84, 2000.
TSCHAETSCH, H., Metal Forming Practise, Processes – Machines – Tools, Springer, 2006.
DRAGAN, I., Technology of Plastic Deformation, Editura Didactica si Pedagogica, Bucharest, 1981.
LAUE, K., STENGER, H., Extrusion, American Society for Metals, 1981.
METALS HANDBOOK, Vol.8, Mechanical testing, ASM International, 1990.
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