A modified Hall-Petch relationship in ultrafine-grained titanium recycled from chips by equal channel angular pressing | Health & Environmental Research Online (HERO)

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Citation
Tags

HERO ID

2676436

Reference Type

Journal Article

Title

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

Author(s)

Luo, P; McDonald, DT; Xu, W; Palanisamy, S; Dargusch, MS; Xia, K

Year

2012

Is Peer Reviewed?

Journal

Scripta Materialia
ISSN: 1359-6462

Volume

Issue

Page Numbers

785-788

DOI

10.1016/j.scriptamat.2012.02.008

Web of Science Id

WOS:000302756400017

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 mu m, and good ductility (similar to 6%). 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. (C) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

Keywords

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