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Ultrahigh deformability of Ti-6Al-4V assisted by high-density pulsed electric current treatment
http://hdl.handle.net/2237/0002011066
http://hdl.handle.net/2237/000201106696cad656-cd30-44c4-851f-52cf739bebbd
| 名前 / ファイル | ライセンス | アクション |
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Ultrahigh_deformability_of_Ti-6Al-4V.pdf (3.8 MB)
Download is available from 2026/2/5.
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| Item type | itemtype_ver1(1) | |||||||||||||||||||||
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| 公開日 | 2024-06-11 | |||||||||||||||||||||
| タイトル | ||||||||||||||||||||||
| 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
× 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 | ||||||||||||||||||||||
| アクセス権 | embargoed access | |||||||||||||||||||||
| 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 | ||||||||||||||||||||||
| 内容記述タイプ | Abstract | |||||||||||||||||||||
| 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 | ||||||||||||||||||||||
| 出版者 | Elsevier | |||||||||||||||||||||
| 言語 | en | |||||||||||||||||||||
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| 言語 | eng | |||||||||||||||||||||
| 資源タイプ | ||||||||||||||||||||||
| 資源タイプresource | http://purl.org/coar/resource_type/c_6501 | |||||||||||||||||||||
| タイプ | journal article | |||||||||||||||||||||
| 出版タイプ | ||||||||||||||||||||||
| 出版タイプ | AM | |||||||||||||||||||||
| 出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||||||||||||||||||
| 関連情報 | ||||||||||||||||||||||
| 関連タイプ | isVersionOf | |||||||||||||||||||||
| 識別子タイプ | DOI | |||||||||||||||||||||
| 関連識別子 | https://doi.org/10.1016/j.jallcom.2023.172892 | |||||||||||||||||||||
| 収録物識別子 | ||||||||||||||||||||||
| 収録物識別子タイプ | PISSN | |||||||||||||||||||||
| 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 | ||||||||||||||||||||||
| 日付 | 2026-02-05 | |||||||||||||||||||||
| 日付タイプ | Available | |||||||||||||||||||||
