Fabrication of bulk nanocrystalline Fe alloys with high strength and high tensile ductility by electrodeposition
Project/Area Number |
25390031
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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 |
Nanomaterials engineering
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Research Institution | Osaka Prefecture University |
Principal Investigator |
Yorinobu Takigawa 大阪府立大学, 工学(系)研究科(研究院), 准教授 (70382231)
|
Research Collaborator |
MATSUI Isao
KAWAKATSU Tomo
MORI Hiroki
OGURA Yu
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Project Period (FY) |
2013-04-01 – 2016-03-31
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Project Status |
Completed (Fiscal Year 2015)
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Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
|
Keywords | 電解析出法 / ナノ結晶材料 / バルク / 延性 / 結晶成長 / 粒界偏析 / バルクナノ結晶材料 / Fe基合金 / 配向 / Fe-Ni合金 / 高強度 / 高延性 |
Outline of Final Research Achievements |
Bulk nanocrystalline Fe-Ni, Fe-Ni-C and Fe-Mn alloys were fabricated by an electrodeposition. Fe-Ni alloys exhibit high strength of 1.5GPa and large tensile ductility of 15%. The intrinsic ductility of these alloys was explored, taking into consideration the relationship between ductility and the orientation index or contents of grain boundary embrittlement element. An applying multiple regression analysis provides accurate predictions for the ductility. The analysis of this study points to the potency that the intrinsic ductility of nanocrystalline Fe–Ni alloys is higher than that of the present highest value of 24%. Fe-Ni-C alloys with high hardness are also fabricated. The addition of propionic acid to the deposition bath could release the excess grain boundary defects of electrodeposited alloys in as-deposited states. Fe-Mn alloys without voids and cracks were also fabricated.
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Report
(4 results)
Research Products
(32 results)
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[Presentation] 電解析出法を用いたナノ結晶Fe-Mn合金の創製2015
Author(s)
小倉悠, 森宏樹, 上杉徳照, 瀧川順庸, 東健司
Organizer
日本金属学会・日本鉄鋼協会関西支部 平成27年度材料化学研究会・鉄鋼プロセス研究会合同研究会
Place of Presentation
大阪府立大学iサイトなんば(大阪府大阪市)
Year and Date
2015-12-07
Related Report
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