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Microstructural evolution in Ti–10Al–1Zr–1Mo–1Nb alloy under thermomechanical treatment in β-region
http://hdl.handle.net/10131/00013531
http://hdl.handle.net/10131/00013531973f0a1a-4eab-4e2a-a6ea-84b8fb424b66
名前 / ファイル | ライセンス | アクション |
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MSEA-D-20-02921R1.pdf (6.5 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2021-01-06 | |||||
タイトル | ||||||
タイトル | Microstructural evolution in Ti–10Al–1Zr–1Mo–1Nb alloy under thermomechanical treatment in β-region | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題 | Near α-type titanium alloy, Thermomechanical treatment, Dynamic recovery, Dislocation motion, Deformation mechanism | |||||
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 | |||||
著者 |
Tanii, Shintaro
× Tanii, Shintaro× Umezawa, Osamu× Yamabe-Mitarai, Yoko |
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著者所属 | ||||||
Graduate School of Engineering Science, Yokohama National University | ||||||
著者所属 | ||||||
Faculty of Engineering, Yokohama National University | ||||||
著者所属 | ||||||
Center of Advanced Innovation Technologies, Vysoká Škola Báňská - Technical University of Ostrava | ||||||
著者所属 | ||||||
National Research Institute for Materials Science | ||||||
著者所属 | ||||||
Graduate School of Frontier Sciences, The University of Tokyo | ||||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | The influence of temperature and strain rate on microstructural evolution in near α-type Ti–10Al–1Zr–1Mo–1Nb alloy was studied under uniaxial compression in the β single-phase-region. Hot compression tests were conducted for up to 75% reduction at temperatures between 1273 K and 1333 K and strain rates between 0.01 s^−1 and 5 s^−1. The steady-state of the flow behavior revealed that dynamic recovery in the β single-phase was dominant in the microstructural evolution process, and few dynamically recrystallized grains were detected, except in the vicinity of the pre-existing β grain boundaries. Two types of configurations such as lamellar α_L and acicular α_AC microstructures were developed, which were consistent with the compressive deformation mechanism in the β-region. The α_L microstructure consisted of α platelets that were developed via growth of a specific variant, whereas the α_AC microstructure consisted of individual α platelets with a different variant in the prior-β matrix. The stress exponent and activation energy were evaluated to determine the deformation mechanism. The heterogeneous nucleation of individual α platelets in the cellular structure (sub-grains) without a specific orientation in the β matrix resulted in the αAC microstructure. In contrast, the substructure as uniformly distributed dislocations in prior-β grains under the viscous motion of dislocations promoted a single variant selection to form αL platelets in the transformation. When the viscous drag dislocation motion in the β-region is dominant, a large crystal rotation is detected in the acicular (side plate) α_SP platelets in the vicinity of the prior-β grain boundary. | |||||
書誌情報 |
Materials Science and Engineering: A 巻 796, 発行日 2020-09-02 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0921-5093 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA11537747 | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | info:doi/10.1016/j.msea.2020.140149 | |||||
著者版フラグ | ||||||
出版タイプ | AM | |||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
出版者 | ||||||
出版者 | Elsevier | |||||
関係URI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1016/j.msea.2020.140149 | |||||
関連名称 | https://doi.org/10.1016/j.msea.2020.140149 |