Understanding of macrosegregation mechanism through in situ observation of deformation in semi-solid alloys
Project/Area Number |
24560910
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Metal making engineering
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Research Institution | Osaka University |
Principal Investigator |
NAGIRA Tomoya 大阪大学, 工学(系)研究科(研究院), 助教 (00379124)
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Project Period (FY) |
2012-04-01 – 2015-03-31
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Project Status |
Completed (Fiscal Year 2014)
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Budget Amount *help |
¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2012: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
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Keywords | 固液共存体 / その場観察 / せん断変形 / 偏析 / 凝固割れ / マクロ偏析 / 鋳造割れ / 固液共存 / 割れ / バンド偏析 |
Outline of Final Research Achievements |
Deformation of semi-solid alloys causes casting defects including macrosegregation and cracking. In this study, in situ observation of semi-solid deformation in Al-Cu and Fe-C alloys was carried out using time-resolved X-ray imaging in order to elucidate the semi-solid deformation mechanisms. It was found that the shear strain rate was localized and the solid fraction decreased at the shear domain. The impact of solid morphology on shear band was examined by comparing with in situ observation of deformation in water-particle mixtures. The Impacts of the solid fraction and the shear strain rate on the deformed microstructure and the shear band in the metallic alloys were also examined.
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Report
(4 results)
Research Products
(41 results)
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[Journal Article] In-situ observation of deformation in semi-solid Fe-C alloys at high shear rate2014
Author(s)
T. Nagira, S. Morita, H. Yokota, H. Yasuda, C. M. Gourlay, M. Yoshiya,, A. Sugiyama, K, Uesugi, Y. Takeuchi, Y. Suzuki
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Journal Title
Metallurgical and Materials Transactions A
Volume: 45A
Issue: 12
Pages: 1415-1424
DOI
Related Report
Peer Reviewed / Acknowledgement Compliant
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[Presentation] In-situ observation of shear deformation in semi-solid Al-Cu alloys2012
Author(s)
T. Nagira, S. Morita, H. Yasuda, C.M. Gourlay, A. Sugiyama, M. Yoshiya, K. Uesugi, K. Umetani,
Organizer
,2nd International workshop "In-situ Studies with Photons, Neutrons and Electrons Scattering
Place of Presentation
Hotel Hankyu Expo Park, Osaka
Related Report
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