| 研究課題/領域番号 |
23K04455
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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26050:材料加工および組織制御関連
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| 研究機関 | 国立研究開発法人産業技術総合研究所 |
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研究代表者 |
Bian Mingzhe 国立研究開発法人産業技術総合研究所, 材料・化学領域, 主任研究員 (30848320)
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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 |
4,680千円 (直接経費: 3,600千円、間接経費: 1,080千円)
2025年度: 1,300千円 (直接経費: 1,000千円、間接経費: 300千円)
2024年度: 1,560千円 (直接経費: 1,200千円、間接経費: 360千円)
2023年度: 1,820千円 (直接経費: 1,400千円、間接経費: 420千円)
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| キーワード | Magnesium / Aluminum / High entropy interlayer / Ultrasonic welding / Interface |
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| 研究開始時の研究の概要 |
The purpose of this project is to sputter various elements in different ratios by a vacuum deposition method, thereafter forming a ductile nano-scale high/medium-entropy interlayer at the joint interface after ultrasonic welding.
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| 研究実績の概要 |
The objective of this research is to enhance the joint strength of ultrasonically welded Mg/Al joint sheets by forming a ductile Mg-Al-containing high/medium entropy interlayer. In the first year, an attempt was made to evaporate a model high entropy alloy, namely Cantor Co-Cr-Fe-Ni-Mn alloy, onto AZ31 (Mg-3Al-1Zn-0.3Mn in wt%) and A5052 (Al-2.6Mg-0.1Si-0.2Cr-0.3Fe in wt%) alloy sheets under vacuum conditions. However, due to the large differences in the evaporation temperatures of each element, the thermal evaporation approach proved to be difficult. Therefore, a melt spinning method was employed to produce a Cantor alloy foil with a thickness of 20 um. Subsequently, Mg/Cantor/Al joints were successfully produced under various welding conditions.
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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
The thermal evaporation process proved difficult due to the significant differences in the evaporation temperatures of Co, Cr, Fe, Ni, and Mn. Additionally, it appears that Ni and Co reacted with tungsten (W), leading to the breakage of the W basket during the heating process. Fortunately, the applicant found an alternative method, i.e. melt spinning method to produce a Cantor alloy foil.
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| 今後の研究の推進方策 |
Attempts will be made to evaporate single elements such as Zn, Cu, Ag, Ni, Ti, and Zr onto AZ31 and/or A5052 alloy sheets under vacuum conditions. If the thermal evaporation approach proves ineffective, foils will be purchased, and Mg/third element foil/Al joints will be produced under different ultrasonic welding conditions. Tensile shear tests and microstructure characterization work using metallography will commence shortly after the joint sheets are produced.
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