期刊
SCIENTIFIC REPORTS
卷 12, 期 1, 页码 -出版社
NATURE PORTFOLIO
DOI: 10.1038/s41598-022-16086-6
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资金
- Japan Society for the Promotion of Science KAKENHI [JP19K05101, JP22K04778]
- Japan Science and Technology Agency [JPMJFS2138]
- Graduate Course for System-Inspired Leaders in Multidisciplinary Science, OPU
- Nagoya University
- program of Nanotechnology Platform of the Ministry of Education, Culture, Sports, Science and Technology, Japan [JPMXP09A21NU0063]
Crystal-grain refinement is an effective approach to obtaining high-strength materials, with significant implications at the nanoscale. In this study, nanocrystalline FeCoNi MEAs with 10-nm crystal grains were successfully fabricated using electrodeposition, achieving the highest reported tensile strength to date.
Crystal-grain refinement is one of the effective approaches to obtaining high-strength materials. A good strength/ductility balance has been reported in fine grains of high- and medium-entropy alloys. However, crystal-grain refinement at the nanometer scale has not been achieved yet. In this study, we used electrodeposition to fabricate 0.2-mm thick equiatomic FeCoNi medium-entropy alloys (MEAs) with 10-nm crystal grains. The nanocrystalline FeCoNi MEAs exhibit the maximum tensile strength of 1.6 GPa, which is the highest reported result to date.
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