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Mahmoud, A., Mahfouz, M., Gad- Elrab, H., Doheim, M. (2014). GRAIN REFINEMENT OF COMMERCIAL PURE ALUMINIUM BY ZIRCONIUM. JES. Journal of Engineering Sciences, 42(No 5), 1232-1241. doi: 10.21608/jesaun.2014.115063
A. E. Mahmoud; M. G. Mahfouz; H. G. Gad- Elrab; M. A. Doheim. "GRAIN REFINEMENT OF COMMERCIAL PURE ALUMINIUM BY ZIRCONIUM". JES. Journal of Engineering Sciences, 42, No 5, 2014, 1232-1241. doi: 10.21608/jesaun.2014.115063
Mahmoud, A., Mahfouz, M., Gad- Elrab, H., Doheim, M. (2014). 'GRAIN REFINEMENT OF COMMERCIAL PURE ALUMINIUM BY ZIRCONIUM', JES. Journal of Engineering Sciences, 42(No 5), pp. 1232-1241. doi: 10.21608/jesaun.2014.115063
Mahmoud, A., Mahfouz, M., Gad- Elrab, H., Doheim, M. GRAIN REFINEMENT OF COMMERCIAL PURE ALUMINIUM BY ZIRCONIUM. JES. Journal of Engineering Sciences, 2014; 42(No 5): 1232-1241. doi: 10.21608/jesaun.2014.115063

GRAIN REFINEMENT OF COMMERCIAL PURE ALUMINIUM BY ZIRCONIUM

Article 6, Volume 42, No 5, September and October 2014, Page 1232-1241  XML PDF (1.02 MB)
Document Type: Research Paper
DOI: 10.21608/jesaun.2014.115063
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Authors
A. E. Mahmoud1; M. G. Mahfouz2; H. G. Gad- Elrab1; M. A. Doheim
1Mining and Metallurgical Eng. Depart. Faculty of Engineering, Assiut University, Assiut, Egypt.
2Nuclear Materials Authority- Egypt.
Abstract
The effect of Zr addition on the grain refinement of commercial pure aluminium (99.7%) has been investigated in the present study. The results showed that addition of up to 0.3wt. % Zr significantly decreases the average grain size of aluminium from 1100 μm to 162 μm at holding time of 90 seconds. The refining effect of zirconium is attributed to the presence of Al3Zr particles in Al-Zr master alloy. These particles are acting as effective heterogeneous nucleating sites for α-Al.
Keywords
grain refinement - aluminum-zirconium; master alloy
Main Subjects
Mining and Metallurgical Engineering.
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