A modified Hall-Petch relationship in ultrafine-grained titanium recycled from chips by equal channel angular pressing

P. Luo; D. T. McDonald; W. Xu; S. Palanisamy; M. S. Dargusch; K. Xia

doi:10.1016/j.scriptamat.2012.02.008

A modified Hall-Petch relationship in ultrafine-grained titanium recycled from chips by equal channel angular pressing

P. Luo^*, D. T. McDonald, W. Xu, S. Palanisamy, M. S. Dargusch, K. Xia

^*Corresponding author for this work

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

355 Citations (Scopus)

Abstract

Equal channel angular pressing was used to consolidate commercially pure titanium chips into fully dense bulk material with high strength (up to 650 MPa), due to an ultrafine grain size as low as 0.8 μm, and good ductility (∼16%). Electron backscattered diffraction was employed to reveal low-angle grain boundaries (LAGBs), enabling a modified Hall-Petch relationship to be analyzed in consideration of strengthening contributions from LAGBs in particular, but also interstitial solutes, high-angle grain boundaries and potential oxide dispersion.

Original language	English
Pages (from-to)	785-788
Number of pages	4
Journal	Scripta Materialia
Volume	66
Issue number	10
DOIs	https://doi.org/10.1016/j.scriptamat.2012.02.008
Publication status	Published - May 2012
Externally published	Yes

Keywords

Equal channel angular pressing (ECAP)
Hall-Petch relationship
Recycling
Titanium

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10.1016/j.scriptamat.2012.02.008

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title = "A modified Hall-Petch relationship in ultrafine-grained titanium recycled from chips by equal channel angular pressing",

abstract = "Equal channel angular pressing was used to consolidate commercially pure titanium chips into fully dense bulk material with high strength (up to 650 MPa), due to an ultrafine grain size as low as 0.8 μm, and good ductility (∼16%). Electron backscattered diffraction was employed to reveal low-angle grain boundaries (LAGBs), enabling a modified Hall-Petch relationship to be analyzed in consideration of strengthening contributions from LAGBs in particular, but also interstitial solutes, high-angle grain boundaries and potential oxide dispersion.",

keywords = "Equal channel angular pressing (ECAP), Hall-Petch relationship, Recycling, Titanium",

author = "P. Luo and McDonald, {D. T.} and W. Xu and S. Palanisamy and Dargusch, {M. S.} and K. Xia",

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AU - Luo, P.

AU - McDonald, D. T.

AU - Xu, W.

AU - Palanisamy, S.

AU - Dargusch, M. S.

AU - Xia, K.

PY - 2012/5

Y1 - 2012/5

N2 - Equal channel angular pressing was used to consolidate commercially pure titanium chips into fully dense bulk material with high strength (up to 650 MPa), due to an ultrafine grain size as low as 0.8 μm, and good ductility (∼16%). Electron backscattered diffraction was employed to reveal low-angle grain boundaries (LAGBs), enabling a modified Hall-Petch relationship to be analyzed in consideration of strengthening contributions from LAGBs in particular, but also interstitial solutes, high-angle grain boundaries and potential oxide dispersion.

AB - Equal channel angular pressing was used to consolidate commercially pure titanium chips into fully dense bulk material with high strength (up to 650 MPa), due to an ultrafine grain size as low as 0.8 μm, and good ductility (∼16%). Electron backscattered diffraction was employed to reveal low-angle grain boundaries (LAGBs), enabling a modified Hall-Petch relationship to be analyzed in consideration of strengthening contributions from LAGBs in particular, but also interstitial solutes, high-angle grain boundaries and potential oxide dispersion.

KW - Equal channel angular pressing (ECAP)

KW - Hall-Petch relationship

KW - Recycling

KW - Titanium

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SN - 1359-6462

VL - 66

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JO - Scripta Materialia

JF - Scripta Materialia

IS - 10

ER -

A modified Hall-Petch relationship in ultrafine-grained titanium recycled from chips by equal channel angular pressing

Abstract

Keywords

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