Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/12750
Title: Strength scaling law, deformation kinetics and mechanisms of nanostructured Ti
Authors: Li, YK
Liu, F
Zheng, GP 
Pan, D
Zhao, YH
Wang, YM
Keywords: Activation volume
Hall-petch relationship
Internal friction
Nanostructured Ti
Strain rate sensitivity
Issue Date: 2013
Publisher: Elsevier
Source: Materials science and engineering. A, Structural materials : properties, microstructure and processing, 2013, v. 573, p. 141-147 How to cite?
Journal: Materials science and engineering. A, Structural materials : properties, microstructure and processing 
Abstract: We investigate the tensile properties, strain rate sensitivity, and activation volume of nanostructured Ti prepared by equal channel angular pressing plus a series of thermal treatment. Simultaneous enhancement of strength and tensile ductility is achieved. The strain rate sensitivity is found to decrease with decreasing grain sizes (~150-450. nm). A new Hall-petch relationship is presented and discussed. The analyses on the internal friction peaks at around -70 °C suggest that twins could play the primary role for the strain hardening of the annealed nanostructured Ti, consistent with the miniscule activation volumes.
URI: http://hdl.handle.net/10397/12750
ISSN: 0921-5093
EISSN: 1873-4936
DOI: 10.1016/j.msea.2013.02.054
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