Damping Properties vs. Structure Fineness of the High-zinc Aluminum Alloys

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The subject of this study is the presentation of relation between the degree of structure fineness and ultrasonic wave damping coefficient for the high-zinc aluminium alloys represented in this study by the sand mould cast alloy Al - 20 wt% Zn (AlZn20). The studied alloy was refined with a modifying (Al,Zn)-Ti3 ternary master alloy, introducing Ti in the amount of 400 pm into metal. Based on the analysis of the initial and modified alloy macrostructure images and ultrasonic testing, it was found that the addition of (Al,Zn)-Ti3 master alloy, alongside a significant fragmentation of grains, does not reduce the coefficient of ultrasonic waves with a frequency of 1 MHz.

[1] Krajewski, W.K., Buras, J., Żurakowski, M. & Greer, A.L. (2009). Structure and properties of grain-refined Al-20wt% Zn sand cast alloy. Archives of Metallurgy and Materials, vol. 54, issue 2, pp.329-334.

[2] Krajewski, W.K., Buras, J., Żurakowski, M., Greer, A.L., Mancheva, M.N., Haberl, K. & Schumacher, P. (2010). Development of Environmentally Friendly Cast Alloys. High- Zinc Al Alloys. Archives of Materials Science and Engineering, vol. 45, issue 2, pp. 120-124.

[3] Haberl, K., Krajewski, W.K. & Schumacher, P. (2010). Microstructural Features of the Grain-refined Sand Cast Alloy AlZn20, Archives of Metallurgy and Materials, vol. 55, issue 3, pp. 837-841.

[4] Zhang, Y., Ma, N., Le, Y., Li, S. & Wang, H. (2005). Mechanical properties and damping capacity after grain refinement in A356 alloy. Materials Letters, vol. 59, pp. 2174-2177.

[5] Krajewski, W.K., Buras, J., Piwowarski, G., Haberl, K. & Tsivoulas, D. (2011). DSC and TA characteristics of the inoculated Al-Zn20 alloy. Archives of Foundry Engineering, vol. 11, issue 1, pp. 65-68.

[6] Krajewski, W.K. & Haberl, K. (2011). The effect of Ti on High-Zinc Al cast alloys structure and properties. ActaMetallurgica Slovaca, vol. 17, issue 2, pp. 123-128.

[7] Buras, J. (2011). The influence of grain refinement on damping properties of selected aluminium zinc cast alloys. PhD thesis supervised by W.K. Krajewski, AGH University of Science and Technology - Faculty of Foundry Engineering, Krakow 2011 (in Polish).

Archives of Foundry Engineering

The Journal of Polish Academy of Sciences

Journal Information

CiteScore 2016: 0.42

SCImago Journal Rank (SJR) 2016: 0.192
Source Normalized Impact per Paper (SNIP) 2016: 0.316


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