Numerical Analysis on the Density Uniformity for SiC_p/2024Al in the Extrusion Process

Abstract:

Many factors can influence the density uniformity of the SiC particle reinforced aluminum matrix composites, including the material preparation method and the material processing technology. The influence factors on the density uniformity of SiC_p/2024Al in the extrusion process were studied in the present investigation. Those factors contain the extrusion ratio, the extrusion velocity, the temperature and the friction coefficient. The flow stress of this material under different temperatures and strain velocities was tested by heat physical simulation experiments. As a result, the true stress-strain curve was obtained and the phenomenological constitutive equation was established, and the FEM simulation was used for the extrusion process. The velocity gradient computed by the numerical simulation was used to describe the density uniformity. The density uniformity caused by different extrusion process parameters was compared and analyzed. The results showed that the density uniformity was improved obviously by the optimization of extrusion process parameters. At last, the real extrusion process test was organized to verify the numerical simulation results and the most suitable characteristic parameters of the extrusion mold and the process was finally determined.

• Periodical: Materials Science Forum (Volume 850)
• Pages: 536-543
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.850.536
• Online since: March 2016
• Authors: Yan Ju Wang*, De Sheng Chu, Peng Jun Tang, Yong Jun Guan
• Keywords: Density Uniformity, Extrusion, Numerical Simulation, Process Parameters Optimization, SiC_p/2024Al

References

[1] Ibrahim, I.F. Mohamed, and E. Lavernia, Particulate reinforced metal matrix composites review. Journal of materials science, 26(1991) 1137-1156.

DOI: 10.1007/bf00544448

[2] Lloyd.D. Particle reinforced aluminium and magnesium matrix composites, International Materials Reviews. 39(1994) 1-23.

DOI: 10.1179/imr.1994.39.1.1

[3] Karthikyan R, Adalarasan R, Pai B C. Optimization of Machining Characteristics for Al／SiCp Composites using ANN／GA, Mater. Sci. Technol., 18(2002) 47-50.

[4] GEIGER A L, WALKER J A, The processing and properties of discontinuously reinforced aluminum composites. Journal of the Minerals, Metals and Materials Society, 43(1991) 8-15.

[5] GOSWAMI R K, SIKAND R, DHAR A, et al. Extrusion characteristics of aluminum alloy/SiCp metal matrix composites, Materials Science and Technology. 15(1999) 443-449.

DOI: 10.1179/026708399101505914

[6] ZHANG B L, MACLEAN M S, BAKER T N. Hot deformation behavior of aluminum alloy 6061/SiCp MMCs made by powder metallurgy route, Materials Science and Technology. 16(2000) 7-8.

DOI: 10.1179/026708300101508658

[7] SRIVASTAVA V C, JINDAL V, UHLENWINKEL V, et al. Hot-deformation behavior of spray-formed 2014 Al+SiCP metal matrix composites, Materials Science and Engineering A. 477(2008) 86-95.

DOI: 10.1016/j.msea.2007.06.086

[8] ZHAO Ming-jiu, LIU Yue, BI Jing. Hot deformation behavior of silicon carbide particulate reinforced 2024 aluminum based composite, Acta Metallurgica Sinica. 39(2003) 221-224.

[9] C. Venkatesh, R. Venkatesan. Optimization of Process Parameters of Hot Extrusion of SiC/Al 6061 Composite Using Taguchi's Technique and Upper Bound Technique, Materials and Manufacturing Processes. 30(2015) 85-92.

DOI: 10.1080/10426914.2014.962658

[10] Venkatesh, C., Venkatesan, R. Design and analysis of streamlined extrusion die for round to hexagon through area mapping technique, upper bound technique and Finite element method. Journal of Mechanical Science and Technology. 28 (2014).

DOI: 10.1007/s12206-014-0136-0

[11] ShibayanRoy, G. Kannan, SatyamSuwas, M.K. Surappa. Effect of extrusion ratio on the microstructure, texture, and mechanical properties of(Mg/AZ91)m–SiCp composite, Materials Science & Engineering A . 624(2015) 279-290.

DOI: 10.1016/j.msea.2014.10.063

[12] Tingting Li, Guoqun Zhao, Cunsheng Zhang, et al. Effect of Process Parameters on Die Wear Behavior of Aluminum Alloy Rod Extrusion, Materials and Manufacturing Processes. 28(2013) 312-318.

DOI: 10.1080/10426914.2012.675536