2013 Fiscal Year Final Research Report
Combined process of lithography and phase decomposition high aspect ratio nanofabrication
| Project/Area Number |
23656446
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Material processing/treatments
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| Research Institution | Tohoku University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
NISHIYAMA Hiroaki 山形大学, 大学院・工学研究科, 准教授 (80403153)
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| Project Period (FY) |
2011 – 2012
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| Keywords | 転位 / 析出 / Ti-Al合金 / 微細加工 |
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| Research Abstract |
Owing to the technologies for micromanufacturing and micromechanical testing, such as lithography and nano-indentation, the length scale of controllable heterogeneity has become comparable to that of microstructures formed by precipitation. In our study, three kinds of nanoplastic deformation methods including nano-imprinting, nano-indentation, and nanogrooving were conducted to produce local nanostrain on the supersaturated Ti3Al single crystals, focusing on the formation of periodic, parallel, basal dislocation bands with relatively high density. The effects of fine antiphase domains on the formation and motion of dislocations during nanoplastic deformation and the formation of plastic zone by combination of three kinds of slip systems were examined. The effect of the dislocation band produced by nanogrooving on the precipitation of gamma lamellae was also investigated.
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[Journal Article]
Author(s)
Daixhu Wei, Yuichiro Koizumi, Hiroaki Nishiyama, Akinori Yamanaka, Masahiko Yoshino, Shinpei Miyamoto, Kyosuke Yoshimi, Akihiko Chiba
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Journal Title
Acta Mater
Volume: (掲載決定, in press)
Peer Reviewed
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