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Effect of strain-induced precipitation on the recrystallization kinetics in a model alloy
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Ji, Mo, Strangwood, Martin and Davis, Claire (2021) Effect of strain-induced precipitation on the recrystallization kinetics in a model alloy. Metallurgical and Materials Transactions A - Physical Metallurgy and Materials Science, 52 . pp. 1963-1975. doi:10.1007/s11661-021-06206-8 ISSN 1073-5623.
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WRAP-effect-strain-induced-precipitation-recrystallization-kinetics-model-alloy-Strangwood-2021.pdf - Accepted Version Embargoed item. Restricted access to Repository staff only - Requires a PDF viewer. Download (1767Kb) |
Official URL: https://doi.org/10.1007/s11661-021-06206-8
Abstract
The effects of Nb addition on the recrystallization kinetics and the recrystallized grain size distribution after cold deformation were investigated by using Fe-30Ni and Fe-30Ni-0.044 wt pct Nb steel with comparable starting grain size distributions. The samples were deformed to 0.3 strain at room temperature followed by annealing at 950 °C to 850 °C for various times; the microstructural evolution and the grain size distribution of non- and fully recrystallized samples were characterized, along with the strain-induced precipitates (SIPs) and their size and volume fraction evolution. It was found that Nb addition has little effect on recrystallized grain size distribution, whereas Nb precipitation kinetics (SIP size and number density) affects the recrystallization Avrami exponent depending on the annealing temperature. Faster precipitation coarsening rates at high temperature (950 °C to 900 °C) led to slower recrystallization kinetics but no change on Avrami exponent, despite precipitation occurring before recrystallization. Whereas a slower precipitation coarsening rate at 850 °C gave fine-sized strain-induced precipitates that were effective in reducing the recrystallization Avrami exponent after 50 pct of recrystallization. Both solute drag and precipitation pinning effects have been added onto the JMAK model to account the effect of Nb content on recrystallization Avrami exponent for samples with large grain size distributions.
Item Type: | Journal Article | ||||||||
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Subjects: | T Technology > TN Mining engineering. Metallurgy T Technology > TS Manufactures |
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||||||
Library of Congress Subject Headings (LCSH): | Recrystallization (Metallurgy), Annealing of metals | ||||||||
Journal or Publication Title: | Metallurgical and Materials Transactions A - Physical Metallurgy and Materials Science | ||||||||
Publisher: | Springer New York LLC | ||||||||
ISSN: | 1073-5623 | ||||||||
Official Date: | May 2021 | ||||||||
Dates: |
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Volume: | 52 | ||||||||
Page Range: | pp. 1963-1975 | ||||||||
DOI: | 10.1007/s11661-021-06206-8 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||||
Date of first compliant deposit: | 12 March 2021 | ||||||||
Date of first compliant Open Access: | 14 April 2021 | ||||||||
RIOXX Funder/Project Grant: |
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