Journal article
Grain boundary serration in nickel alloy inconel 600: quantification and mechanisms
- Abstract:
- The serration of grain boundaries in Inconel 600 caused by heat treatment is studied systematically. A new method based on Fourier transforms is used to analyse the multiple wave-like character of the serrated grain boundaries. A new metric – the serration index – is devised and utilised to quantify the degree of serration and more generally to distinguish objectively between serrated and non-serrated boundaries. By considering the variation of the serration index with processing parameters, a causal relationship between degree of serration and solution treatment/cooling rate is elucidated. Processing maps for the degree of serration are presented. Two distinct formation mechanisms arise which rely upon grain boundary interaction with carbides: (i) Zener-type dragging which hinders grain boundary migration and (ii) a faceted carbide growth-induced serration.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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- Files:
-
-
(Preview, Accepted manuscript, pdf, 5.2MB, Terms of use)
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- Publisher copy:
- 10.1016/j.actamat.2019.09.037
Authors
- Publisher:
- Elsevier
- Journal:
- Acta Materialia More from this journal
- Volume:
- 181
- Pages:
- 352-366
- Publication date:
- 2019-09-26
- Acceptance date:
- 2019-09-22
- DOI:
- EISSN:
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1873-2453
- ISSN:
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1359-6454
- Language:
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English
- Keywords:
- Pubs id:
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1063582
- Local pid:
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pubs:1063582
- Deposit date:
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2020-03-08
Terms of use
- Copyright holder:
- Acta Materialia Inc.
- Copyright date:
- 2019
- Rights statement:
- © 2019 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
- Notes:
- This is the accepted manuscript version of the article. The final version is available online from Elsevier at: https://doi.org/10.1016/j.actamat.2019.09.037
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