2017 Fiscal Year Final Research Report
The establishment of a estimating method of plastic strain distribution due to construction of multi-scale marking
| Project/Area Number |
15K06489
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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 |
Structural/Functional materials
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| Research Institution | Kyushu University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
田中 將己 九州大学, 工学研究院, 准教授 (40452809)
東田 賢二 佐世保工業高等専門学校, その他, 校長 (70156561)
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Keywords | 塑性変形 / 力学物性 |
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| Outline of Final Research Achievements |
In addition to the pricise marker method using electron beam lithography, searching for a new marking method with a focused ion beam, we have been obtained appropriate values of various conditions such as beam voltage and current, it have been possible to draw the markers in spacing of about 300nm. The marker methods have applied to multi-phase steels composed of complex phase such as ferrite, martensite, bainite, which have different microstructures. It has been obtained that plastic strain distribution in each phase due to tensile deformation. As a result, it has been possible to visualize the inhomogeneity of plastic deformation of mesoscopic scale. Moreover, the tendency of increase of local strain of soft phase due to constraint by hard phase was clarified.
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| Free Research Field |
材料物性学
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