The University of Southampton
University of Southampton Institutional Repository

Grain boundary formation by remnant dislocations from the de-twinning of thin nano-twins

Grain boundary formation by remnant dislocations from the de-twinning of thin nano-twins
Grain boundary formation by remnant dislocations from the de-twinning of thin nano-twins
We report a grain boundary formation mechanism in face-centred cubic metals with low stacking fault energies. Severe plastic deformation produces primary nano-twins with a twin boundary spacing of several nanometres, followed by secondary twinning through the activation of Shockley partial dislocations. The partial dislocations interact with primary twin boundaries, resulting in de-twinning of the primary twins and producing very high densities of sessile dislocations. The accumulation of these dislocations produces new grain boundaries with neighbouring grains having similar orientations.
grain boundary, twinning, de-twinning, grain refinement, steel
1359-6462
98-101
Cao, Y.
2a06c7de-86c5-4804-ab45-20266cbea4cf
Wang, Y.B.
30d7b540-dc88-4382-867a-28d0354a8495
An, X.H.
18016416-a17d-4882-aaa6-5a3c1160e9a9
Liao, X.Z.
f0645a6d-aee1-4d28-aa13-f1b00fdedc41
Kawasaki, M.
d0ce18b9-8403-4db2-9cb2-3a6165f288a6
Ringer, S.P.
2b986d4b-e93c-4801-9a1b-b16b39c30242
Langdon, T.G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Zhu, Y.T.
ddbd5b30-13ca-45a6-9296-ed5b60811efb
Cao, Y.
2a06c7de-86c5-4804-ab45-20266cbea4cf
Wang, Y.B.
30d7b540-dc88-4382-867a-28d0354a8495
An, X.H.
18016416-a17d-4882-aaa6-5a3c1160e9a9
Liao, X.Z.
f0645a6d-aee1-4d28-aa13-f1b00fdedc41
Kawasaki, M.
d0ce18b9-8403-4db2-9cb2-3a6165f288a6
Ringer, S.P.
2b986d4b-e93c-4801-9a1b-b16b39c30242
Langdon, T.G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Zhu, Y.T.
ddbd5b30-13ca-45a6-9296-ed5b60811efb

Cao, Y., Wang, Y.B., An, X.H., Liao, X.Z., Kawasaki, M., Ringer, S.P., Langdon, T.G. and Zhu, Y.T. (2015) Grain boundary formation by remnant dislocations from the de-twinning of thin nano-twins. Scripta Materialia, 100, 98-101. (doi:10.1016/j.scriptamat.2015.01.001).

Record type: Article

Abstract

We report a grain boundary formation mechanism in face-centred cubic metals with low stacking fault energies. Severe plastic deformation produces primary nano-twins with a twin boundary spacing of several nanometres, followed by secondary twinning through the activation of Shockley partial dislocations. The partial dislocations interact with primary twin boundaries, resulting in de-twinning of the primary twins and producing very high densities of sessile dislocations. The accumulation of these dislocations produces new grain boundaries with neighbouring grains having similar orientations.

Full text not available from this repository.

More information

Accepted/In Press date: 2 January 2015
e-pub ahead of print date: 14 January 2015
Published date: 15 April 2015
Keywords: grain boundary, twinning, de-twinning, grain refinement, steel
Organisations: Engineering Mats & Surface Engineerg Gp

Identifiers

Local EPrints ID: 377265
URI: http://eprints.soton.ac.uk/id/eprint/377265
ISSN: 1359-6462
PURE UUID: 35087237-a479-4e56-905c-2a93a5e249d2
ORCID for T.G. Langdon: ORCID iD orcid.org/0000-0003-3541-9250

Catalogue record

Date deposited: 20 May 2015 10:40
Last modified: 17 Dec 2019 01:50

Export record

Altmetrics

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×