Structure of the Eutectoid Zn-Al Alloy Obtained by Directed Solidification
Keywords:
Zn-Al alloys, directed solidification, microstructure, dilatometric analysis, microhardness
Abstract
This work analyses the structure of the eutectoid Zn-Al based alloy directionally solidified, with cooling rates ranging between 8.5-0.4 oC/sec. During cooling, the temperature gradient in the liquidus zone, respectively of the eutectoid transformation, changed within the ranges of 0.6-4.6, respectively 1.2-6.4 oC/mm. The results of the dilatometric analyses and of microhardness on different crystalline areas are presented.
References
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[2]. Y. H. Zhu - Phase transformations of eutectoid Zn-Al alloys, J. Materials Science, 36, 2001, p. 3973-3980.
[3]. Y. H. Zhu, K. C. Chan, G. K. H. Pang, T. M. Yue, W. B. Lee - Structural Changes of α Phase in Furnace Cooled Eutectoid Zn-Al Based Alloy, J. Mater. Sci. Technol., Vol. 23, No.3, 2007, p. 347-352.
[4]. X. L. Xu, Z. W.Yu, S. J. Ji, J. C. Sun, Z. K. Hei - Differential Scanning calorimetry and X-ray diffraction studies on aging behavior of Zn-Al alloys, Acta Metallurgica Sinica, Vol. 14, No. 2, april 2001, p. 109-114.
[5]. G. Torres-Villasenor, E. Martinez-Flores - Hybrid materials based on Zn-Al, Metal, Ceramic and Polymeric Composites for various uses, Published online 20, July, 2011, http://www.intechopen. com/books/metal-ceramic-and-polymericcomposites-forvarious-uses/hibrid-materials-based-on zn-al-alloys.
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[7]. B. Varga, I. Peter - Structural transformations in Zn-Al22 alloy solidified by ultra-rapid cooling, in Metalurgia International, vol. XVII, No. Special Issue 6, 2013, p. 9-12.
[8]. Ares A. E., Schvezov C. E. - Influence of solidification thermal parameters on the columnar-to-equiaxed transition of aluminium-zinc and zinc-aluminium alloys, in Metallurgical and Materials transactions A, vol. 38A, 07, 2007, p. 1485-1499.
[9]. Krupkowski A., Pawlovski A., Dukiet-Zawadzka B. - Dendritic segregation of Al-Zn alloys solidifying at different velocity, in Archiwum Hutnictwa, vol. 14, 1969, nr. 4, p. 295-301.
Published
2014-03-15
How to Cite
1.
AGAPIE M, VARGA B. Structure of the Eutectoid Zn-Al Alloy Obtained by Directed Solidification. The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science [Internet]. 15Mar.2014 [cited 8May2024];37(1):76-0. Available from: https://www.gup.ugal.ro/ugaljournals/index.php/mms/article/view/2651
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