| 研究課題/領域番号 |
23K04429
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| 研究種目 |
基盤研究(C)
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| 配分区分 | 基金 |
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| 応募区分 | 一般 |
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| 審査区分 |
小区分26040:構造材料および機能材料関連
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| 研究機関 | 国立研究開発法人日本原子力研究開発機構 |
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研究代表者 |
Gong Wu 国立研究開発法人日本原子力研究開発機構, 原子力科学研究部門 J－PARCセンター, 研究副主幹 (30780770)
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| 研究期間 (年度) |
2023-04-01 – 2026-03-31
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| 研究課題ステータス |
交付 (2023年度)
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| 配分額 *注記 |
4,550千円 (直接経費: 3,500千円、間接経費: 1,050千円)
2025年度: 910千円 (直接経費: 700千円、間接経費: 210千円)
2024年度: 1,300千円 (直接経費: 1,000千円、間接経費: 300千円)
2023年度: 2,340千円 (直接経費: 1,800千円、間接経費: 540千円)
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| キーワード | Magnesium / Neutron diffraction / Acoustic emission / Deformation / Microstructure |
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| 研究開始時の研究の概要 |
Nowadays, there is a rising emphasis on the development of Mg and its alloys due to their significant potential for various applications. In present study, the deformation behavior and microstructure evolution of Mg alloys at temperature from 20K to 773K will be investigated by a combination of in-situ neutron diffraction and AE techniques. By conducting well-designed experiments and meticulous data analysis, valuable insights into Mg alloys can be gained to improve their performance in cryogenic and elevated temperature environments, as well as optimize hot forming processes.
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| 研究実績の概要 |
The present study is to establish an experimental system that combines in-situ neutron diffraction and AE techniques to investigate the deformation behavior and microstructure evolution of Mg alloys at temperatures ranging from 20K to 723K. In FY2023, the applicant conducted the following experiments and presented the corresponding results at various conferences to achieve this aim:
(1) In-situ neutron diffraction experiments during deformation at cryogenic temperatures were successfully performed on AZ31 alloy and LZ91 alloy using the engineering diffractometer TAKUMI at J-PARC.
(2) The results of the AZ31 alloy showing the detwinning behavior at 20K were presented at the "2023 JIM Fall Meeting" and "PRICM 11".
(3) The results for the LZ91 alloy showing the deformation mechanisms at 20K and 77K were presented at "TMS 2024".
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| 現在までの達成度 (区分) |
現在までの達成度 (区分)
2: おおむね順調に進展している
理由
In FY 2023, the in-situ neutron diffraction during cryogenic deformation experiments were performed successfully. The temperature dependent deformation behavior of AZ31 alloy and dual-phase LZ91 alloy were investigated. The results were presented at one domestic conference and two international conferences.
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| 今後の研究の推進方策 |
In FY 2024, the applicant will utilize the newly purchased AE sensor and pre-amplifier, combined with in-situ neutron diffraction, to track the deformation behavior of Mg alloys at cryogenic and elevated temperatures. Microstructure observation experiments will be conducted. The obtained results will be presented in conferences.
In FY 2025, the applicant will conduct additional experiments, data analysis. The results of these experiments will be presented in conferences. Additionally, the applicant intends to summarize all the findings for submission to academic journals.
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