2013 Fiscal Year Final Research Report
Developing Experimental Methods for Evaluating the Ideal Decohesive Strength of Grain Boundaries
| Project/Area Number |
22686058
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| Research Category |
Grant-in-Aid for Young Scientists (A)
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| Allocation Type | Single-year Grants |
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| Research Field |
Physical properties of metals
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| Research Institution | Tohoku University |
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Principal Investigator |
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| Project Period (FY) |
2010-04-01 – 2013-03-31
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| Keywords | 粒界物性 / 破壊 / 電子顕微鏡 |
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| Research Abstract |
Due to technical difficulties in experiments the atomic-scale physical mechanisms of intergranular failure that limits the structural lifetime of nuclear materials have been theorized primarily by computer simulations in the past decade. However, since simulations are always based on assumptions and numerical approximations, the obtained results are ultimately in need of assessments and validations by experiments. To overcome the dilemma, in the present study experimental assessments have been carried out on the inputs and outputs of first principle calculations. A technical challenge is how to measure the ideal decohesion strength of grain boundaries without including the effect of local stress concentration due to pile-up dislocations.
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[Presentation] Crystal Structure Analysis of Precipitates/Solute-Clusters Detected by Atom-Probe Tomography : G-phase, Solute Cluster, or G-phase Precursor?2013
Author(s)
Y.Matsukawa, Y.Kakubo, T.Takeuchi, K.Arakawa, T.Toyama, Y.Nozawa, H.Terashima, T.Kojima, Y.Yamaguchi, J.Katsuyama, Y.Nishiyama, Y.Nagai
Organizer
The Minerals, Metals & Materials Society 2013 Annual Meeting (TMS2013
Place of Presentation
San Antonio, USA
Year and Date
20130303-07
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