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Effect of sample geometry on strain uniformity and double hit compression tests for softening kinetics determination
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Tamanna, Nusrat, Slater, Carl and Davis, Claire (2022) Effect of sample geometry on strain uniformity and double hit compression tests for softening kinetics determination. Steel Research International . 2200157. doi:10.1002/srin.202200157 ISSN 1611-3683. (In Press)
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WRAP-Effect-sample-geometry-strain-uniformity-double-hit-compression-22.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons Attribution 4.0. Download (2780Kb) | Preview |
Official URL: https://doi.org/10.1002/srin.202200157
Abstract
Static softening is an essential process during the hot rolling of steel to refine grain size and improve mechanical properties. The double hit test is used to measure the static softening volume fraction from the flow stress curves. Herein, the influence of different sample geometries on the determination of softening fraction from the double hit test for conditions where 0–99% softening is expected. The double hit tests are modeled in DEFORM for conventional sample geometries in both uniaxial compression and standard plane strain compression tests, and an additional simulation of a modified plane strain compression test sample geometry, designed to provide more uniform strain distributions, is also performed. A user routine is incorporated into the model to predict the localized softening volume fraction from localized strain based on known softening equations and set back the localized strain value to zero while the softening volume fraction reaches 85%. The standard plane strain compression test geometry shows a strong strain gradient resulting in inaccurate softening fraction volume predictions from flow stress, whereas the uniaxial compression test and modified plane strain compression test geometries show better predictions of softening volume fraction from the flow stress data.
| 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) | ||||||||
| SWORD Depositor: | Library Publications Router | ||||||||
| Library of Congress Subject Headings (LCSH): | Steel -- Fatigue , Strains and stresses, Metals -- Thermomechanical treatment | ||||||||
| Journal or Publication Title: | Steel Research International | ||||||||
| Publisher: | Wiley | ||||||||
| ISSN: | 1611-3683 | ||||||||
| Official Date: | 2022 | ||||||||
| Dates: |
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| Article Number: | 2200157 | ||||||||
| DOI: | 10.1002/srin.202200157 | ||||||||
| Status: | Peer Reviewed | ||||||||
| Publication Status: | In Press | ||||||||
| Reuse Statement (publisher, data, author rights): | ** Article version: VoR ** From Wiley via Jisc Publications Router ** History: received 28-02-2022; rev-recd 22-07-2022; pub-electronic 18-08-2022. ** Licence for VoR version of this article: http://creativecommons.org/licenses/by/4.0/ | ||||||||
| Access rights to Published version: | Open Access (Creative Commons) | ||||||||
| Date of first compliant deposit: | 2 September 2022 | ||||||||
| Date of first compliant Open Access: | 2 September 2022 | ||||||||
| RIOXX Funder/Project Grant: |
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