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Effect of grain size distribution on recrystallisation kinetics in an Fe-30Ni model alloy
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Ji, Mo, Davis, Claire and Strangwood, Martin (2019) Effect of grain size distribution on recrystallisation kinetics in an Fe-30Ni model alloy. Metals, 9 (3). 369. doi:10.3390/met9030369 ISSN 2075-4701.
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Official URL: https://doi.org/10.3390/met9030369
Abstract
This paper discusses the role of grain size distribution on the recrystallisation rates and Avrami values for a Fe-30 wt. % Ni steel, which was used as a model alloy retaining an austenitic structure to room temperature. Cold deformation was used to provide uniform macroscopic strain distributions (strains of 0.2 and 0.3), followed by recrystallisation during annealing at 850â950âŚC.It was shown that the Avrami parameter was directly related to the grain size distribution, with a lower Avrami exponent being seen for a larger average and wider grain size distribution. A method to predict the Avrami exponent from the grain size distribution was proposed. In situ heating in an SEM with EBSD showed the recrystallisation kinetics to be affected by differences in stored energy and nucleation in the different grain sizes supporting the proposed relationship.
Item Type: | Journal Article | |||||||||
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Subjects: | T Technology > TA Engineering (General). Civil engineering (General) T Technology > TN Mining engineering. Metallurgy |
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | |||||||||
Library of Congress Subject Headings (LCSH): | Iron-nickel alloys, Steel | |||||||||
Journal or Publication Title: | Metals | |||||||||
Publisher: | MDPI | |||||||||
ISSN: | 2075-4701 | |||||||||
Official Date: | 22 March 2019 | |||||||||
Dates: |
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Volume: | 9 | |||||||||
Number: | 3 | |||||||||
Article Number: | 369 | |||||||||
DOI: | 10.3390/met9030369 | |||||||||
Status: | Peer Reviewed | |||||||||
Publication Status: | Published | |||||||||
Access rights to Published version: | Open Access (Creative Commons) | |||||||||
Date of first compliant deposit: | 25 March 2019 | |||||||||
Date of first compliant Open Access: | 28 March 2019 | |||||||||
RIOXX Funder/Project Grant: |
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