The Influence of Duration of Mechanical Activation of Titanium Powder on its Morphology, Microstructure, and Microhardness
| Autor: | Ivan A. Ditenberg, Yu. P. Pinzhin, A. N. Tyumentsev, V. V. Melnikov, V. L. Radishevskii, A. S. Tsverova, Michail A. Korchagin, Ivan V. Smirnov, K. V. Grinyaev, I. I. Sukhanov |
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| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Diffraction Materials science Scattering General Physics and Astronomy 02 engineering and technology Crystal structure Microstructure 01 natural sciences Indentation hardness Titanium powder 020303 mechanical engineering & transports 0203 mechanical engineering Transmission electron microscopy 0103 physical sciences Composite material |
| Zdroj: | Russian Physics Journal. 60:1033-1039 |
| ISSN: | 1573-9228 1064-8887 |
| DOI: | 10.1007/s11182-017-1174-8 |
| Popis: | Using the methods of X-ray diffraction analysis and scanning and transmission electron microscopy, an investigation of the influence of duration of mechanical activation on morphology and structure of titanium powder is performed. In the course of processing the following stages of material transformation are revealed: fragmentation of the initial powder, conglomeration, and ovalization of the conglomerates. It is found that when the duration of mechanical activation increases, the characteristic size of coherent scattering regions is significantly decreased, which is accompanied by an increase in the value of microdistortions and intensive fragmentation of the crystal lattice inside powder particles followed by the formation of highly defective nanostructured states. The transformation of microstructure is accompanied by a considerable increase in microhardness. |
| Databáze: | OpenAIRE |
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