Journal article
On the composition of microtwins in a single crystal nickel-based superalloy
- Abstract:
- Correlative analysis is performed using atom probe tomography and high resolution transmission Kikuchi diffraction techniques on microtwins of ∼10 nm thickness, in a ⟨011⟩-orientated single crystal superalloy crept at 800 °C and 650 MPa. Composition profiles across the microtwins and microtwin-parent boundaries are presented. Enrichment of microtwin-parent interfaces by approximately 2 at.% Cr and 1 at.% Co within the γ′-phase is found; no compositional variations of other elements – Ta, Nb, Mo, W – are detected. Our results provide unique insights into the mechanism of microtwin formation and the likely influence of alloy composition on deformation kinetics.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, pdf, 1.5MB, Terms of use)
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- Publisher copy:
- 10.1016/j.scriptamat.2016.08.029
Authors
- Publisher:
- Elsevier
- Journal:
- Scripta Materialia More from this journal
- Volume:
- 127
- Pages:
- 37-40
- Publication date:
- 2016-09-08
- Acceptance date:
- 2016-08-23
- DOI:
- ISSN:
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1872-8456
- Keywords:
- Pubs id:
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pubs:641841
- UUID:
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uuid:226c60e8-0e58-4573-a9aa-e143f41a90c4
- Local pid:
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pubs:641841
- Source identifiers:
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641841
- Deposit date:
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2016-09-09
Terms of use
- Copyright holder:
- Acta Materialia Inc
- Copyright date:
- 2016
- Notes:
- © 2016 Acta Materialia Inc. Published by Elsevier Ltd. Under a Creative Commons license.
- Licence:
- CC Attribution (CC BY)
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