Nanostructures in Ti processed by severe plastic deformation

Zhu, Y. T. and Huang, J. Y. and Gubicza, Jenő and Ungár, Tamás and Wang, Y. M. and Ma, E. and Valiev, R. Z. (2003) Nanostructures in Ti processed by severe plastic deformation. Journal of Materials Research, 18 (8). pp. 1908-1917. ISSN 0884-2914 (print), 2044-5326 (online)

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Abstract

Metals and alloys processed by severe plastic deformation (SPD) can demonstrate superior mechanical properties, which are rendered by their unique defect structures. In this investigation, transmission electron microscopy and x-ray analysis were used to systematically study the defect structures, including grain and subgrain structures, dislocation cells, dislocation distributions, grain boundaries, and the hierarchy of these structural features, in nanostructured Ti produced by a two-step SPD procedure-warm equal channel angular pressing followed by cold rolling. The effects of these defect structures on the mechanical behaviors of nanostructured Ti are discussed.

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