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De-twinning via secondary twinning in face-centered cubic alloys

De-twinning via secondary twinning in face-centered cubic alloys
De-twinning via secondary twinning in face-centered cubic alloys
We report a de-twinning process via secondary twinning in face-centred cubic structures with low stacking fault energies. A duplex stainless steel was deformed using high-pressure torsion. Primary twins with an average twin boundary (TB) spacing of ?7 nm formed in the early stages of the deformation and this was followed by secondary twinning. The partial dislocations from the secondary twinning subsequently interacted with the primary TBs, leading to the de-twinning of the primary twins. As a result of the de-twinning process, the secondary twins with an average TB spacing of ?1.7 nm reached a maximum length of ?200 nm
severe plastic deformation, steel, twinning, de-twinning, transmission electron microscopy
0921-5093
110-114
Cao, Y.
2a06c7de-86c5-4804-ab45-20266cbea4cf
Wang, Y.B.
30d7b540-dc88-4382-867a-28d0354a8495
Chen, Z.B.
c5cf0a60-0e4d-494d-9262-26d2640c3a6c
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
Chen, Z.B.
c5cf0a60-0e4d-494d-9262-26d2640c3a6c
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., Chen, Z.B., Liao, X.Z., Kawasaki, M., Ringer, S.P., Langdon, T.G. and Zhu, Y.T. (2013) De-twinning via secondary twinning in face-centered cubic alloys. Materials Science and Engineering: A, 578, 110-114. (doi:10.1016/j.msea.2013.04.075).

Record type: Article

Abstract

We report a de-twinning process via secondary twinning in face-centred cubic structures with low stacking fault energies. A duplex stainless steel was deformed using high-pressure torsion. Primary twins with an average twin boundary (TB) spacing of ?7 nm formed in the early stages of the deformation and this was followed by secondary twinning. The partial dislocations from the secondary twinning subsequently interacted with the primary TBs, leading to the de-twinning of the primary twins. As a result of the de-twinning process, the secondary twins with an average TB spacing of ?1.7 nm reached a maximum length of ?200 nm

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More information

Published date: 20 August 2013
Keywords: severe plastic deformation, steel, twinning, de-twinning, transmission electron microscopy
Organisations: Engineering Mats & Surface Engineerg Gp

Identifiers

Local EPrints ID: 359497
URI: https://eprints.soton.ac.uk/id/eprint/359497
ISSN: 0921-5093
PURE UUID: ea2a5e7e-91d8-4685-b01f-50490d0c7f43
ORCID for T.G. Langdon: ORCID iD orcid.org/0000-0003-3541-9250

Catalogue record

Date deposited: 04 Nov 2013 16:38
Last modified: 06 Jun 2018 12:48

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