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Effects of grain size and β fraction on the deformation modes of a Ti-6Al-2Sn-4Zr-2Mo-Si alloy with equiaxed (α + β) microstructures: Slip trace analysis and multiscale simulation of polycrystal plasticity
https://kagawa-u.repo.nii.ac.jp/records/2000972
https://kagawa-u.repo.nii.ac.jp/records/2000972fec6f56e-482c-42b0-b39b-777b65461d9b
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
JAC981_173722
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||||||||||||||||
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| 公開日 | 2025-07-18 | |||||||||||||||||||
| タイトル | ||||||||||||||||||||
| タイトル | Effects of grain size and β fraction on the deformation modes of a Ti-6Al-2Sn-4Zr-2Mo-Si alloy with equiaxed (α + β) microstructures: Slip trace analysis and multiscale simulation of polycrystal plasticity | |||||||||||||||||||
| 言語 | en | |||||||||||||||||||
| 言語 | ||||||||||||||||||||
| 言語 | eng | |||||||||||||||||||
| 資源タイプ | ||||||||||||||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||||||||||||
| 資源タイプ | journal article | |||||||||||||||||||
| アクセス権 | ||||||||||||||||||||
| アクセス権 | embargoed access | |||||||||||||||||||
| アクセス権URI | http://purl.org/coar/access_right/c_f1cf | |||||||||||||||||||
| 公開予定日 | ||||||||||||||||||||
| 日付 | 2026-02-03 | |||||||||||||||||||
| 日付タイプ | Available | |||||||||||||||||||
| 著者 |
イルビン, セシュペ
× イルビン, セシュペ
× Clara, Dubray
× Vincent, Velay
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| 抄録 | ||||||||||||||||||||
| 内容記述タイプ | Abstract | |||||||||||||||||||
| 内容記述 | This study investigates the mechanisms behind the great mechanical properties observed at room temperature for a dual-phase Ti-6Al-2Sn-4Zr-2Mo-Si titanium alloy with equiaxed (α + β) microstructures. More precisely, analyzing the material deformation modes and the possible effects of β fraction and grain size was done to better understand such micromechanisms. With this idea in mind, uniaxial tensile deformation tests were performed at room temperature, and the resulting mechanical behaviors were analyzed. It was observed that increasing β fraction would enhance the overall ductility and work hardening while conversely decreasing the material resistance. Additionally, the material strengthening due to grain size effect, quantified by the Hall-Petch parameter, was also found to be dependent on β fraction. Slip trace analysis was conducted to understand the effects of grain size and β fraction on the activation of the basal<a> , prismatic<a> , and pyramidal<c+a> slip systems and their critical resolved shear stress (CRSS) ratios were established. The qualitative study of CRSS ratios revealed that at smaller grain sizes, the basal<a> slip systems were dominant (e.g. basal/prismatic CRSS ratio of 0.86 for d=2.98 µm) whereas the prismatic<a> slip systems were prevalent and more easily activated for coarser grains (e.g. basal/prismatic CRSS ratio of 1.19 for d=4.21 µm). Such CRSS ratios were then used to identify the material parameters of a self-consistent multiscale model employed to reproduce the tensile behaviors. For a more quantitative analysis, the CRSS values were evaluated and correlated to grain sizes with Hall-Petch relations. Clear correlations regarding grain size and β fraction were found for the CRSS of prismatic<a> and pyramidal<c+a> systems. However, special attention was given to the ambiguous results regarding basal<a> slip systems because of the potential manifestation of the compatibility stresses and grain boundary sliding mechanisms due to the higher density of grain boundaries at small grain sizes. | |||||||||||||||||||
| 言語 | en | |||||||||||||||||||
| 書誌情報 |
en : Journal of Alloys and Compounds 巻 981, 発行日 2024-04-25 |
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| 最終更新日 | ||||||||||||||||||||
| 日付 | 2026-02-03 | |||||||||||||||||||
| 日付タイプ | Available | |||||||||||||||||||
| 出版者 | ||||||||||||||||||||
| 出版者 | Elsevier | |||||||||||||||||||
| 言語 | en | |||||||||||||||||||
| ISSN | ||||||||||||||||||||
| 収録物識別子タイプ | EISSN | |||||||||||||||||||
| 収録物識別子 | 1873-4669 | |||||||||||||||||||
| 権利 | ||||||||||||||||||||
| 言語 | en | |||||||||||||||||||
| 権利情報 | © 2024 Elsevier B.V. All rights reserved. | |||||||||||||||||||
| 助成情報 | ||||||||||||||||||||
| 識別子タイプ | Crossref Funder | |||||||||||||||||||
| 助成機関識別子タイプURI | https://www.crossref.org/services/funder-registry/ | |||||||||||||||||||
| 助成機関識別子 | https://doi.org/10.13039/501100001691 | |||||||||||||||||||
| 助成機関名 | 日本学術振興会 | |||||||||||||||||||
| 言語 | ja | |||||||||||||||||||
| 助成機関名 | Japan Society for the Promotion of Science | |||||||||||||||||||
| 言語 | en | |||||||||||||||||||
| 著者版フラグ | ||||||||||||||||||||
| 出版タイプ | VoR | |||||||||||||||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||||||||||||||
