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Intrinsically ductile failure in a nanocrystalline beta titanium alloy

Intrinsically ductile failure in a nanocrystalline beta titanium alloy
Intrinsically ductile failure in a nanocrystalline beta titanium alloy
A nanocrystalline bcc Ti67.4Nb24.6Zr5Sn3 alloy is shown to fracture in an intrinsically ductile manner with exceptionally large dimples (up to 10?µm) which are two orders of magnitude greater than the grain size (??40?nm). This large plasticity length scale is attributed to a combination of low shear modulus (? 27?GPa), high Poisson's ratio (? 0.4) and ultrahigh strength (UTS ? 1.1?GPa), close to the ideal shear stress, which facilitates ideal shear deformation to promote transgranular shear
1438-1656
1108-1113
Xu, Wei
cef87ede-4edd-4bde-a9f8-a4c63e18c418
Figueiredo, Roberto B.
2e0060b8-6368-4d87-825a-c3cb90e92145
Wu, Xiaolin
4d89c421-f5a7-4d7e-bf6c-2c16d8ad6ea4
Pauly, Simon
3d1c39f1-bc7f-4fd3-8a0e-91483b93bf03
Stoica, Mihai
c357da29-4f76-4f93-af8b-a44016bbbdd5
Eckert, Jürgen
7b499657-07b7-455e-849b-1854d7e250cb
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Xia, Kenong
07ef42d9-f9f6-4b04-8a9b-6217795a8498
Xu, Wei
cef87ede-4edd-4bde-a9f8-a4c63e18c418
Figueiredo, Roberto B.
2e0060b8-6368-4d87-825a-c3cb90e92145
Wu, Xiaolin
4d89c421-f5a7-4d7e-bf6c-2c16d8ad6ea4
Pauly, Simon
3d1c39f1-bc7f-4fd3-8a0e-91483b93bf03
Stoica, Mihai
c357da29-4f76-4f93-af8b-a44016bbbdd5
Eckert, Jürgen
7b499657-07b7-455e-849b-1854d7e250cb
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Xia, Kenong
07ef42d9-f9f6-4b04-8a9b-6217795a8498

Xu, Wei, Figueiredo, Roberto B., Wu, Xiaolin, Pauly, Simon, Stoica, Mihai, Eckert, Jürgen, Langdon, Terence G. and Xia, Kenong (2011) Intrinsically ductile failure in a nanocrystalline beta titanium alloy. Advanced Engineering Materials, 13 (12), 1108-1113. (doi:10.1002/adem.201100116).

Record type: Article

Abstract

A nanocrystalline bcc Ti67.4Nb24.6Zr5Sn3 alloy is shown to fracture in an intrinsically ductile manner with exceptionally large dimples (up to 10?µm) which are two orders of magnitude greater than the grain size (??40?nm). This large plasticity length scale is attributed to a combination of low shear modulus (? 27?GPa), high Poisson's ratio (? 0.4) and ultrahigh strength (UTS ? 1.1?GPa), close to the ideal shear stress, which facilitates ideal shear deformation to promote transgranular shear

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More information

e-pub ahead of print date: 30 June 2011
Published date: December 2011
Organisations: Bioengineering Group

Identifiers

Local EPrints ID: 335452
URI: http://eprints.soton.ac.uk/id/eprint/335452
ISSN: 1438-1656
PURE UUID: d84bf4a7-a66a-4a5e-aa5a-350601b411d2
ORCID for Terence G. Langdon: ORCID iD orcid.org/0000-0003-3541-9250

Catalogue record

Date deposited: 14 Mar 2012 12:53
Last modified: 17 Dec 2019 01:50

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