Microstructure and Mechanical Properties of Nano-crystalline Al-8 wt pct Ni Alloy |
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Authors: | M.Abou Zied |
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Affiliation: | Physics Department, Faculty of Science, South Valley University, Qena 83511, Egypt |
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Abstract: | Microstructure and mechanical properties of ball-milled Al-8 wt pct Ni ribbon have been investigated by X-ray diffraction(XRD)and continuous Vickers hardness test, respectively. The results indicate that, the main phases of this alloy are α-Al and orthorhombic-Al3Ni. The lattice parameter of α-Al increases with increasing milling time. From the elastic constant of Al, the average contrast factors of the(111),(200),(220),(311)and system were calculated. The average grain size and dislocation parameters as a function of milling time have been investigated using the modified Williamson-Hall plot and the Warren-Averbach equation, respectively.An attempt has been made to correlate the micro-hardness of milled ribbon with their grain size through the Hall-Patch relationship:HV0.01=742.45〈D〉-1/2 401.55(kg/mm2). |
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Keywords: | Aluminum Microstructure Property X-ray diffraction |
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