The Assessment of Modification of High-Zinc Aluminium Alloy

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The results of examinations of the influence of titanium-boron inoculant on the solidification, the microstructure, and the mechanical properties of AlZn20 alloy are presented. The examinations were carried out for specimens cast both of the non-modified and the inoculated alloy. There were assessed changes in the alloy overcooling during the first stage of solidification due to the nuclei-forming influence of the inoculant. The results of quantitative metallographic measurements concerning the refinement of the grain structure of casting produced in sand moulds are presented. The cooling rate sensitivity of the alloy was proved by revealing changes in morphology of the α-phase primary crystals. Differences in mechanical properties resulting from the applied casting method and optional inoculation were evaluated.

[1] Kim, S.W., Kim, D.Y., Kim, W.G. & Woo, K.D. (2001). The study on characteristics of heat treatment of the direct squeeze cast 7075 wrought Al alloy. Materials Science and Engineering. A304-306, 721-726.

[2] Yang, L.J. (2003). The effect of casting temperature on the properties of squeeze cast aluminium and zinc alloys, Journal of Mater. Processing Technology. 140, 391-396.

[3] Yue, T. M. (1997). Squeeze casting of high-strength aluminium wrought alloy AA7010. Journal of Materials Processing Technology. 66, 179-185.

[4] Zyska, A., Konopka, Z., Łągiewka, M., Bober, A. & Nocuń, S. (2006). Modification of AlZn5Mg alloy. Archives of Foundry. 6 (22), 582-589.

[5] Polmear. I.J. (1995). Light Alloys. London: Metallurgy and Materials Science Series, 3rd Edition.

[6] Mousavi, M.G., Cross, C.E. & Grong, O. (1999). Effect of scandium and titanium-boron on grain refinement and hot cracking of aluminium alloy 7108. Science and Technolgy of Welding and Joining. 4 (6), 381-388.

[7] Janaki Ram, G.D.,. Mitra, T.K., Shankar, V. & Sundaresan, S. (2003). Microstructural refinement through inoculation of type 7020 Al-Zn-Mg alloy welds and its effect on hot cracking and tensile properties. Journal of Materials Processing Technology. 142, 174-181.

[8] Charov, V.O. (1999). Weldability of experimental alloys of Al-Zn-Mg system. Avt. Svarka. 7, 20-23.

[9] Ghosh, P.K., Gupta, S.R., Gupta, P.C. & Rathi, R. (1991). Fatigue characteristics of pulsed MIG welded Al-Zn-Mg alloy. Journal of Materials Science. 26, 6161-6170.

[10] AMS Handbook (1990). Properties and Selection - nonferrous alloys and special - purpose materials. AMS International, Materials Park, vol. 2.

[11] Wol, A.E. (1959). Structure and properties of metallic system. Moscow: Fizmatgiz. (in Polish)

[12] Jurczak, W. (2006). The influence of heat treatmenton stress corosion of Al-Zn-Mg alloys, Scientific Journal of Polish Naval Academy. 2, 37-50. (in Polish)

[13] Górny, Z., Sobczak, J. (2005). Non-ferrous metals based novel materials in foundry practice. Kraków: Za-pis. (in Polish)

[14] Haberl, K., Krajewski, W. & Schumacher, P. (2010). Microstructural features of the grain-refined sand cast AlZn20 alloy. Archives of Metallurgy and Materials. 55, 837-841.

[15] Hung, F.Y., Lui, T. S., Chen, L. H., Chang, H. W., Chen, Z. F. (2007). Vibration behavior of light metals: Al-Zn alloy and Mg-Al-Zn alloy. Journal of Materials Science. 42, 5020-5028.

[16] Tsivoulas, D. M., Czeppe, T., Krajewski, W. K. (2010). DSC examinations of the Al-20 wt % Zn sand-cast alloy inoculated with Ti-containing grain-refiners. Inżynieria Materiałowa. 31, 590-593.

Archives of Foundry Engineering

The Journal of Polish Academy of Sciences

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CiteScore 2016: 0.42

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

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