2016 Fiscal Year Final Research Report
Control of intergranular degradation phenomena in metallic materials based on fractal analysis of grain boundary connectivity
| Project/Area Number |
26420709
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Composite materials/Surface and interface engineering
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| Research Institution | Ashikaga Institute of Technology |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | 粒界工学 / 腐食 / 破壊 / 粒界連結性 / 粒界性格 |
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| Outline of Final Research Achievements |
A new approach to grain boundary engineering based on fractal analysis was investigated to obtain a clue to control the intergranular degradation phenomena in the practical metallic materials. For five kinds of practical alloys which show different microstructure evolution process, it was revealed that the random boundary connectivity where intergranular degradation preferentially propagates can be quantified by the fractal analysis. The intergranular corrosion resistance was improved by lowering fractal dimension of random boundary connectivity. It was demonstrated that the more precise prediction and control of intergranular degradation phenomena can be achieved by the grain boundary engineering based on the fractal analysis of grain boundary connectivity.
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| Free Research Field |
材料工学
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