| Item type |
itemtype_ver1(1) |
| 公開日 |
2024-06-11 |
| タイトル |
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タイトル |
Ultrahigh deformability of Ti-6Al-4V assisted by high-density pulsed electric current treatment |
|
言語 |
en |
| 著者 |
Gu, Shaojie
Liu, Chang
Toku, Yuhki
Kimura, Yasuhiro
Yoon, Sungmin
Li, Shaoli
Cui, Yi
Ju, Yang
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| アクセス権 |
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アクセス権 |
embargoed access |
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アクセス権URI |
http://purl.org/coar/access_right/c_f1cf |
| 権利 |
|
|
言語 |
en |
|
権利情報 |
© 2024. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ |
| 内容記述 |
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|
内容記述タイプ |
Abstract |
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内容記述 |
In this study, the mechanical properties and microstructural evolution of the pre-strained titanium alloy Ti‐6Al‐4V under high-density pulsed electric current (HDPEC) treatment were investigated. The results showed that the HDPEC treatment successfully restored the plastic deformation or strain hardening of the pre-strained Ti‐6Al‐4V without deteriorating its strength. In addition, multi-HDPEC treatments were conducted to examine the cumulative effect on plastic recovery, and ultrahigh deformability with an increasing rate of 287% was achieved at a current density of 250 A/mm2 for 20 ms. Microstructural characterization indicated that dislocations and the associated sub-grain boundaries were remarkably reduced after the HDPEC treatment, contributing to ductility enhancement. Additionally, the rapidly heat-treated sample with a thermal history curve similar to that of the HDPEC-treated samples did not show obvious microstructural changes, indicating that the athermal effect of the HDPEC treatment plays an important role in modifying the microstructure of the material. The α'/α'' martensite phases were formed in the β phase after the HDPEC treatment, which is possibly related to the high cooling rate and diffusion of the V element (β phase stabilizer element). Specifically, at the current condition of 250 A/mm2 for 20 ms, some tiny martensite phases precipitated in the β phase without heavily deteriorating the microstructure and mechanical properties. Therefore, owing to its low cost and high efficiency, the HDPEC treatment can be applied to Ti-alloy components with internal plastic deformation to realize rapid restoration or achieve long service periods without significantly altering the microstructure. |
|
言語 |
en |
| 出版者 |
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出版者 |
Elsevier |
|
言語 |
en |
| 言語 |
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|
言語 |
eng |
| 資源タイプ |
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|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 出版タイプ |
|
|
出版タイプ |
AM |
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出版タイプResource |
http://purl.org/coar/version/c_ab4af688f83e57aa |
| 関連情報 |
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|
関連タイプ |
isVersionOf |
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|
識別子タイプ |
DOI |
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関連識別子 |
https://doi.org/10.1016/j.jallcom.2023.172892 |
| 収録物識別子 |
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収録物識別子タイプ |
PISSN |
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収録物識別子 |
09258388 |
| 書誌情報 |
en : Journal of Alloys and Compounds
巻 973,
p. 172892,
発行日 2024-02-05
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| ファイル公開日 |
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|
日付 |
2026-02-05 |
|
日付タイプ |
Available |
Ultrahigh_deformability_of_Ti-6Al-4V.pdf (3.8 MB)
