Fabrication of Amorphous Ti63.7Nb21.3Zr4.5Ta1.5Fe9 Powder by Mechanical Alloying

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Amorphous Ti63.7Nb21.3Zr4.5Ta1.5Fe9 powder has been designed and fabricated by mechanical alloying (MA) from a mixture of pure titanium and other elemental powders under a purified argon gas atmosphere in a stainless steel vial together with stainless steel balls. The amorphous alloy powders were examined by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The results show that a transform from a well-developed dislocation substructure to a mixed nanocrystalline plus amorphous structure occurs in Ti63.7Nb21.3Zr4.5Ta1.5Fe9 when milling time increases from 0 h to 15 h. Moreover, amorphous Ti63.7Nb21.3Zr4.5Ta1.5Fe9 powders were prepared after mechanical milling for 40 h. The results obtained are of the most significance for future work of densification of the milled powders.

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23-26

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May 2013

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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