Improved Mechanical Properties of Al-Si Alloys by Adding an Extrusion Process to Conventional Processing Method

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Abstract

In this study, the mechanical properties of Al-Si alloys was improved by selecting higher Si content and avoiding distortion in Al-Si matrix by adding an extrusion process such that the fabrication processes casting and extrusion were in sequence. Cast billets were extruded at ratios 4:1 and 10:1 to obtained two extruded bars with different processing parameters. The as-extruded samples were characterized and investigated for microstructure and mechanical properties. Optical Microscope was used to examined phase morphologies and microstructures of the extruded Al-Si bars. Mechanical properties were conducted on each sample to study the effectiveness of the additional extrusion process in high Si content Al-Si alloys. The result shows that by increasing the extrusion ratio, the size of the primary Si particle reduces leading to a higher density, better tensile and yield strength compared to the cast billet.

[1] H. Liao, Y. Sun, G. Sun, Mater. Sci. Eng. A 358, 164 (2003).

[2] R. Li, R. Li, Y. Zhao, L. He, C. Li, H. Guan, Z. Hu, Mater. Lett. 58, 2096 (2004).

[3] S.W. Youn, C.G. Kang, Mater. Sci. Eng. A 425, 28 (2006).

[4] Y.N. Kwon, Y.S. Lee, J.H. Lee, J. Mater. Proc. Technol. 187, 533 (2007).

[5] C.D. Lee, Mater. Sci. Eng. A 464, 249 (2007).

[6] M. Zeren, Mater. Des. 28, 2511 (2007).

[7] Y.D. Huang, N. Hort, H. Dieringa, Acta Mater. 53, 3913 (2005).

[8] L. Deng, X. Wang, J. Xia, J. Li, Mat. Sci. Eng. A 528, 6504 (2011).

[9] N. Haghadadi, A. Hanzaki, H.R. Abedi, A. Ras, M. Kawasaki, Mat. Sci. Eng. A 651, 269 (2016).

[10] M.F. Kilicaslan, W.R. Lee, T.H. Lee, Y. Sohn, S.J. Hong, Mater. Lett. 71, 164 (2012).

[11] W. Shi, B. Gao, G. Tu, S. Li, Y. Hao, F. Yu, J. Rare Earths 28, 367 (2010).

[12] S.J. Hong, C. Suryanarayana, Metall. Mater. Trans. A 36, 715 (2005).

Archives of Metallurgy and Materials

The Journal of Institute of Metallurgy and Materials Science and Commitee on Metallurgy of Polish Academy of Sciences

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IMPACT FACTOR 2016: 0.571
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CiteScore 2016: 0.85

SCImago Journal Rank (SJR) 2016: 0.347
Source Normalized Impact per Paper (SNIP) 2016: 0.740

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