TY - JOUR N2 - 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. L1 - http://journals.pan.pl/Content/86947/PDF/12_paper.pdf L2 - http://journals.pan.pl/Content/86947 PY - 2012 IS - No 3 DO - 10.2478/v10266-012-0083-0 KW - High-zinc aluminum alloys KW - Grain refinement KW - Damping properties KW - Damping coefficient A1 - Krajewski, P.K. A1 - Krajewski, W.K. A1 - Haberl-Faerberb, K. A1 - J. Buras PB - The Katowice Branch of the Polish Academy of Sciences DA - 2012 T1 - Damping Properties vs. Structure Fineness of the High-zinc Aluminum Alloys UR - http://journals.pan.pl/dlibra/publication/edition/86947 T2 - Archives of Foundry Engineering ER -