Strength scaling law, deformation kinetics and mechanisms of nanostructured Ti

Y. K. Li; F. Liu; Guangping Zheng; D. Pan; Y. H. Zhao; Y. M. Wang

doi:10.1016/j.msea.2013.02.054

Strength scaling law, deformation kinetics and mechanisms of nanostructured Ti

Y. K. Li, F. Liu, Guangping Zheng, D. Pan, Y. H. Zhao, Y. M. Wang

Research output: Journal article publication › Journal article › Academic research › peer-review

22 Citations (Scopus)

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.

Original language	English
Pages (from-to)	141-147
Number of pages	7
Journal	Materials Science and Engineering A
Volume	573
DOIs	https://doi.org/10.1016/j.msea.2013.02.054
Publication status	Published - 20 Jun 2013

Keywords

Activation volume
Hall-petch relationship
Internal friction
Nanostructured Ti
Strain rate sensitivity

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1016/j.msea.2013.02.054

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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.",

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T1 - Strength scaling law, deformation kinetics and mechanisms of nanostructured Ti

AU - Li, Y. K.

AU - Liu, F.

AU - Zheng, Guangping

AU - Pan, D.

AU - Zhao, Y. H.

AU - Wang, Y. M.

PY - 2013/6/20

Y1 - 2013/6/20

N2 - 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.

AB - 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.

KW - Activation volume

KW - Hall-petch relationship

KW - Internal friction

KW - Nanostructured Ti

KW - Strain rate sensitivity

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DO - 10.1016/j.msea.2013.02.054

M3 - Journal article

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VL - 573

SP - 141

EP - 147

JO - Materials Science and Engineering A

JF - Materials Science and Engineering A

ER -

Strength scaling law, deformation kinetics and mechanisms of nanostructured Ti

Abstract

Keywords

ASJC Scopus subject areas

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