2012 Fiscal Year Final Research Report
Fabrication of Ni-based Bulk Nanocrystalline Materials for the understanding of ductility and toughness in Nanocrystalline Materials
| Project/Area Number |
22560726
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Material processing/treatments
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| Research Institution | Osaka Prefecture University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
HIGASHI Kenji 大阪府立大学, 大学院・工学研究科, 教授 (50173133)
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| Project Period (FY) |
2010 – 2012
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| Keywords | Ni基バルクナノ結晶材料 / 電解析出法 / 高強度 / 高延性 / 内部応力 / 配向性 |
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| Research Abstract |
Bulk nanocrystalline Ni-based materials with a millimeter thick and minimized internal stress, concentration gradient and fluctuation were fabricated by electrodeposition, and improvement of tensile ductility was demonstrated. We obtain tensile strength of 1.2GPa and tensile elongation of 15% in Ni and 1.4GPa and 13% in Ni-W. There was the relationship between tensile ductility and the orientation index for the (200) plane in the bulk nanocrystalline Ni-W alloys. This result should be related to the crystal growth mechanism, and this study point to that the colony structure of electrodeposits has an effect on the tensile ductility.
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