Ultrafine-grained titanium of high interstitial contents with a good combination of strength and ductility

W. Xu; X. Wu; D. Sadedin; G. Wellwood; K. Xia

doi:10.1063/1.2832657

Ultrafine-grained titanium of high interstitial contents with a good combination of strength and ductility

W. Xu^*, X. Wu, D. Sadedin, G. Wellwood, K. Xia

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

35 Citations (Scopus)

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Abstract

A dehydrided Ti powder of very high oxygen content was successfully consolidated using back pressure equal channel angular processing into a fully dense bulk ultrafine-grained Ti showing apparent compressive ductility as well as high true yield and ultimate strengths of 1350 and 1780 MPa, respectively. Interstitial solid solution strengthening contributed to the majority of the increase in strength with additional contribution from ultrafine grains. Significantly, the material also exhibited much improved ductility for such a high interstitial content, thanks probably to the nonequilibrium grain boundaries and bimodal grain structure introduced during severe plastic deformation.

Original language	English
Article number	011924
Pages (from-to)	011924-1-011924-3
Number of pages	3
Journal	Applied Physics Letters
Volume	92
Issue number	1
DOIs	https://doi.org/10.1063/1.2832657
Publication status	Published - 2008
Externally published	Yes

Bibliographical note

Copyright 2008 AIP Publishing. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Appl. Phys. Lett. 92, 011924 (2008) and may be found at http://dx.doi.org/10.1063/1.2832657.

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abstract = "A dehydrided Ti powder of very high oxygen content was successfully consolidated using back pressure equal channel angular processing into a fully dense bulk ultrafine-grained Ti showing apparent compressive ductility as well as high true yield and ultimate strengths of 1350 and 1780 MPa, respectively. Interstitial solid solution strengthening contributed to the majority of the increase in strength with additional contribution from ultrafine grains. Significantly, the material also exhibited much improved ductility for such a high interstitial content, thanks probably to the nonequilibrium grain boundaries and bimodal grain structure introduced during severe plastic deformation.",

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AU - Wu, X.

AU - Sadedin, D.

AU - Wellwood, G.

AU - Xia, K.

N1 - Copyright 2008 AIP Publishing. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Appl. Phys. Lett. 92, 011924 (2008) and may be found at http://dx.doi.org/10.1063/1.2832657.

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AB - A dehydrided Ti powder of very high oxygen content was successfully consolidated using back pressure equal channel angular processing into a fully dense bulk ultrafine-grained Ti showing apparent compressive ductility as well as high true yield and ultimate strengths of 1350 and 1780 MPa, respectively. Interstitial solid solution strengthening contributed to the majority of the increase in strength with additional contribution from ultrafine grains. Significantly, the material also exhibited much improved ductility for such a high interstitial content, thanks probably to the nonequilibrium grain boundaries and bimodal grain structure introduced during severe plastic deformation.

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Ultrafine-grained titanium of high interstitial contents with a good combination of strength and ductility

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