JMMCE  Vol.10 No.6 , May 2011
A Comparative Study on the Milling Speed for the Synthesis of Nano-Structured Al 6063 Alloy Powder by Mechanical Alloying
ABSTRACT
The present article reports on characterization studies performed on amorphized nanostructured Al 6063 alloy powder synthesized by mechanical alloying (MA). The as-milled powder was characterized by X-ray diffraction (XRD) for investigating the development of crystallite nature and determining the different phases of the materials present, scanning electron microscope (SEM) was used for in depth morphological study and High Resolution-transmission electron microscope (HR-TEM) was employed to ensure the development of a nano-structured nature of the Al 6063 matrix. In the present work alloyed powder was milled for 20 h and 40 h at 300 rpm; and 20 h at 700 rpm in a hardened stainless steel medium. Using Williamson-Hall equation; crystallite size, lattice strain and lattice parameter of Al 6063 nanostructure alloy powder was estimated with broadening of XRD peaks. XRD results showed that the crystallite size of Al 6063 alloy powder reached 32 and 53 nm after 20 h at 700 rpm and 40 h at 300 rpm respectively.

Cite this paper
H. Ahamed and V. Kumar, "A Comparative Study on the Milling Speed for the Synthesis of Nano-Structured Al 6063 Alloy Powder by Mechanical Alloying," Journal of Minerals and Materials Characterization and Engineering, Vol. 10 No. 6, 2011, pp. 507-515. doi: 10.4236/jmmce.2011.106038.
References
[1]   K. S. Kumar, H. Van Swygenhoven, S. Suresh, Mechanical behavior of nanocrystalline metals and alloys, Acta Mater 2003, 5743–5774.

[2]   K. Ramakanth. Basics of X-ray Diffraction and its Application, New Delhi, I. K. International Publishing House; 2007.

[3]   V. Viswanathan, T. Laha, K. Balani, A. Agarwal, S. Seal, Challenges and advances in nanocomposite processing techniques, Mater Sci Eng R 2006, 121–285.

[4]   C. Suryanarayana, Mechanical alloying and milling, Prog Mater Sci 2001, 1-184.

[5]   Viseslava Rajkovic, Dusan Bozic, Milan T. Jovanovic, Characterization of prealloyed copper powders treated in high energy ball mill, Mater Charact 2006, 94–99.

[6]   Maryam Azabou, Mohamed Khitouni, Abdelwaheb Kolsi, Characterization of nanocrystalline Al-based alloy produced by mechanical milling followed by cold-pressing consolidation, Mater Charact 2009, 499 - 505.

[7]   C. C. Koch. Synthesis of nanostructured materials by Mechanical milling: problems and opportunities, Nano Structured Materials, Nanostruct Mater 1997, 13-22.

[8]   V. Biju, Neena Sugathan, V. Vrinda, S. L. Salini. J Mater Sci 2008, 1175-1179.

[9]   B. D. Cullity. Elements of X-ray diffraction, third ed., London, Prentice Hall; 2001.

[10]   K. Williamson, W. H. Hall, X-ray line broadening from filed aluminium and wolfrom, Acta Metall. 1953, 22–31.

[11]   H. J. Fecht, Nanostructure formation by Mechanical attrition, Nanostruct Mater 1995, 33-42.

[12]   P. Haasen, Physical Metallurgy, 3rd Ed., Cambridge University Press Cambridge, Great Britain, 1996.

 
 
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