Abstract
The synthesis of aluminium (Al) nanocrystalline powder by high-energy ball milling has been investigated. Al powders were ball milled in an argon inert atmosphere. The milled powders were characterized by X-ray diffraction and scanning electron microscopy measurements. The high-energy ball milling of Al after 12 hours resulted in crystallite size (particle size) of about 76 nm. Particle size and lattice strain in Al powder produced by milling have been analyzed by X-ray powder diffraction. The lattice strain () and Debye-Waller factor (B) are determined from the half-widths and integrated intensities of the Bragg reflections. In this Al, the Debye-Waller factor is found to increase with the lattice strain. From the correlation between the strain and effective Debye-Waller factor, the Debye-Waller factors for zero strain have been estimated for Al. The variation of energy of vacancy formation as a function of lattice strain has been studied.
Highlights
Influence of Tool Revolving on Mechanical Properties of some metals and alloy had been developed as generation engineering production [1, 2] and with some thermal and mechanical properties and engineering applications [3, 4]
There is considerable X-ray work on the DebyeWaller factors of Aluminium But it is interesting to study the effect of lattice strains on the Debye-Waller factors of these metals
In the present investigation the results of a systematic study of the effect of lattice strains on the Debye-Waller factors and crystallite size of face centred cubic Al metal is reported
Summary
Influence of Tool Revolving on Mechanical Properties of some metals and alloy had been developed as generation engineering production [1, 2] and with some thermal and mechanical properties and engineering applications [3, 4]. The Debye-Waller factor is an important lattice dynamical property. Sirdeshmukh et al [7] observed the effect of lattice strains on the Debye-Waller factors in semiconductor powder materials. Gopi Krishna and Sirdeshmukh [8] studied the effect of lattice strains on the Debye-Waller factor of ytterbium metal. In the present investigation the results of a systematic study of the effect of lattice strains on the Debye-Waller factors and crystallite size of face centred cubic Al metal is reported. These results are being reported for the first time
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