2010 Fiscal Year Final Research Report
Effect of boundary misorientation, grain size distribution and dislocation density on tensile behavior of nanostructured metals
Project/Area Number |
21860010
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Research Category |
Grant-in-Aid for Research Activity Start-up
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Allocation Type | Single-year Grants |
Research Field |
Material processing/treatments
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Research Institution | Tohoku University |
Principal Investigator |
KAMIKAWA Naoya Tohoku University, 金属材料研究所, 助教 (30530894)
|
Project Period (FY) |
2009 – 2010
|
Keywords | 超微細粒材料 / 超強加工 / 力学特性 / 強化機構 |
Research Abstract |
The effect of boundary misorientation on tensile behavior of nanostructured aluminium produced by ultrahigh strain deformation and annealing has been investigated. The strength of ultrafine grained samples mainly surrounded by high-angle boundaries is much higher than that of subgrained samples mainly composed of low-angle boundaries, indicating that high-angle boundaries are more effective for strengthening than low-angle boundaries. It has also been suggested that yielding mechanisms in nanostructured metals is different depending on the boundary misorientation distribution in the samples.
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[Presentation]2011
Author(s)
紙川尚也、廣地泰介、古原忠
Organizer
2011年日本金属学会春期(第148回)大会
Place of Presentation
東京都市大学
Year and Date
20110325-20110327
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[Presentation]2010
Author(s)
廣地泰介、近藤由佳、紙川尚也、古原忠
Organizer
2010年日本金属学会秋期大会ポスターセッション
Place of Presentation
北海道大学
Year and Date
20100925-20100927
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[Remarks] ホームページ等