Abstract
Al-Si alloys, with such excellent properties as low weight, low thermal expansion coefficient, and high wear-resistance, are ideal materials for the automobile and aerospace industries. However, their applications have been hampered by the coarsening of the primary-Si particles in Al-Si alloys. In this study, simple plastic deformation was used to reduce primary-Si particles and to improve the wear-resistance and mechanical strength of Al-Si alloys. Experimental results showed that mechanical rolling decreased the grain size of primary-Si particles in Al-Si alloys and reduced the variation in silicon particle size. After 60%-roll-reduction, the alloy showed an improved tensile strength of 340 MPa, which is attributed to the work hardening of the aluminum matrix and the dispersion strengthening of the primary-Si particles. Data from wear-resistance testing showed that rolling led to a reduction in wear loss. This improvement in wear resistance is due to the particle size refinement of silicon at a high percentage-roll-reduction.
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References
M. Gupta and E. J. Lavernia, J. Mater. Process. Technol. 54, 261 (1995).
A. K. Prasada Rao, K. Das, B. S. Murty, and M. Chakraborty, Wear 257, 148 (2004).
D. Vuksanovic’, M. Martinovic’, P. Z’ivkovic’, Z. Cvijovic’, S. Tripkovic’, Mater. Technol. 37, 149 (2003).
W. J. Kyffin, W. M. Rainforth, and H. Jones, Mater. Trans. 42,10, 2098 (2001).
S. P. Nikanorov, M. P. Volkov, V. N. Gurin, Y. A. Burenkov, L. I. Derkachenko, B. K. Kardashev, L. L. Regel, and W. R. Wilcox, Mater. Sci. Eng. A 390, 63 (2005).
S. J. Hong and C. Suryanarayana, Metall. Mater. Trans. A 36, 715 (2005).
A. J. Moffat, S. Barnes, B. G. Mellor, and P. A. S. Reed, Int. J. Fatigue 27, 1564 (2005).
Y. Wu, S. Wang, H. Li, and X. Liu, J. Alloys Compd. 477, 139 (2009).
K. Matsuura, K. Suzuki, T. Ohmi, M. Kudoh, H. Kinoshita, and H. Takahashi, Metall. Mater. Trans. A 35, 333 (2004).
F. Wang, Y. Ma, Z. Zhang, X. Cui, and Y. Jin, Wear 256, 342 (2004).
S. C. Lim, M. Gupta, Y. F. Leng, and E. J. Lavernia, J. Mater. Process. Technol. 63, 865 (1997).
J. E. Gruzleski, B. M. Closset, The Treatment of Liquid Aluminum-Silicon Alloys, p.13, The American Foundrymen’s Society, Inc., US (1990).
K. Toyama, K. Matsuura, M. Ohno, T. Sato, and M. Nakayama, J. Jpn. Inst. Light Met. 60, 1 (2010).
S. Umezawa, Japanese patent, JP 4103959 B2 2008.6.18. (2008).
T. Ohmi, M. Kudoh, K. Ohsasa, Y. Itoh, K. Matsuura, and K. Ishii, J. Jpn Inst. Light Met. 44, 2 (1994).
S. Nafisi and R. Ghomashchi, J. Mater. Process. Technol. 174, 371 (2006).
K. V. Ojha, A. Tomar, D. Singh, and G. C. Kaushal, Mater. Sci. Eng. A 487, 591 (2008).
S. Kumar, M. Chakraborty, V. S. Sarma, and B. S. Murty, Wear 265, 134 (2008).
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Hsu, CC., Wang, JY., Huang, JJ. et al. Refinement of the primary Si particles in hypereutectic aluminum alloy. Met. Mater. Int. 18, 567–571 (2012). https://doi.org/10.1007/s12540-012-4003-1
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DOI: https://doi.org/10.1007/s12540-012-4003-1