STUDIES OF CRYSTALLITE SIZE AND LATTICE STRAIN IN AL-AL2O3 POWDERS PRODUCED BY HIGH-ENERGY MECHANICAL MILLING | ||
| JES. Journal of Engineering Sciences | ||
| Article 7, Volume 42, No 6, November and December 2014, Pages 1430-1439 PDF (921.94 K) | ||
| Document Type: Research Paper | ||
| DOI: 10.21608/jesaun.2014.115136 | ||
| Authors | ||
| A E Mahmoud1; H S Wasly2; M A Doheim1 | ||
| 1Mining and Metallurgical Eng. Depart, Faculty of Engineering, Assiut University, Assiut, Egypt | ||
| 2Mining and Metallurgical Eng. Depart, Faculty of Engineering, Al-Azhar University, Qena, Egypt | ||
| Abstract | ||
| In the present study mechanical milling used to form nanocrystalline structure in Al-Al2O3 powders. The microstructure of the milled powders was investigated by X-r ay diffraction (XRD) analysis. It was found that the XRD peaks showed a significant broadening, which was related to grain refinement and lattice distortions. X-ray patterns were analyzed using Williamson–Hall treatment to determine the crystallite size and the lattice strain. nanocrystalline powders have been synthesized with microstructure showing a higher lattice strain and an evolution of the finest particles. Microhardness measurements and compression tests were performed to characterize the composite materials. | ||
| Keywords | ||
| XRD; Williamson–Hall; Al-Al2O3; Nanocomposites | ||
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