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Thermomechanical processing map in retaining {100}// ND texture via strain-induced boundary migration recrystallization mechanism
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Ji, Mo, Slater, Carl and Davis, Claire (2020) Thermomechanical processing map in retaining {100}// ND texture via strain-induced boundary migration recrystallization mechanism. Metallurgical and Materials Transactions A - Physical Metallurgy and Materials Science . doi:10.1007/s11661-020-06047-x (In Press)
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WRAP-thermomechanical-processing-map-retaining-ND--Ji-2020.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons Attribution 4.0. Download (1300Kb) | Preview |
Official URL: http://dx.doi.org/10.1007/s11661-020-06047-x
Abstract
The feasibility of establishing thermomechanical conditions to promote {100}// ND fiber texture via strain-induced boundary migration (SIBM) recrystallization mechanism in a non-grain oriented (NGO) electrical steel was investigated. Single hit uniaxial compression at various temperatures and strains have been applied on Fe- 6wt. % Si to establish the relationship between stored energy and the softening mechanisms. Recovery only, recrystallization by SIBM or by subgrain growth (SGG) have been observed depending on the stored energy level. A strong {100}// ND fiber recrystallization texture, i.e. 45% area fraction, was seen in the sample which was deformed to 0.2 strain at 650 C then annealed at 1000 C for 15 minutes, whereas only 13% {100}// ND fiber component was observed after 0.4 strain at 500 C followed by the same annealing treatment. By examining the same microstructural region before and after annealing via EBSD, it has been shown that {100}// ND textured recrystallized grains were formed adjacent to the {100}// ND textured deformed matrix. Low stored energy has been shown to favor the formation of {100}// ND texture recrystallized grains via SIBM recrystallization mechanism attributed to its slow recrystallization nucleation rate. The results from the deformation studies have been used to suggest a processing window map concept to define the recovery, SIBM and SGG regions for the starting as-cast columnar microstructure.
| Item Type: | Journal Article | ||||||
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| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering T Technology > TN Mining engineering. Metallurgy |
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| Divisions: | Faculty of Science > WMG (Formerly the Warwick Manufacturing Group) | ||||||
| Library of Congress Subject Headings (LCSH): | Metals -- Thermomechanical treatment , Recrystallization (Metallurgy) , Steel, Electrical | ||||||
| Journal or Publication Title: | Metallurgical and Materials Transactions A - Physical Metallurgy and Materials Science | ||||||
| Publisher: | Springer New York LLC | ||||||
| ISSN: | 1073-5623 | ||||||
| Official Date: | 21 October 2020 | ||||||
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| Date of first compliant deposit: | 21 October 2020 | ||||||
| DOI: | 10.1007/s11661-020-06047-x | ||||||
| Status: | Peer Reviewed | ||||||
| Publication Status: | In Press | ||||||
| Access rights to Published version: | Open Access | ||||||
| RIOXX Funder/Project Grant: |
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