2013 Fiscal Year Final Research Report
Analysis of microstructure of quasicrystal by electron back scattering diffraction
| Project/Area Number |
24656365
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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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 |
TSAI An-Pang 東北大学, 多元物質科学研究所, 教授 (90225681)
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| Co-Investigator(Renkei-kenkyūsha) |
DEMURA Masahiko 物質・材料研究機構, 水素利用材料ユニット, 主任研究員 (10354177)
YAMAMOTO Akiji 物質・材料研究機構, 水素利用材料ユニット, リサーチアドバイザー
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Keywords | 準結晶 / 後方電子散乱回折 / 共晶組織 / マグネシウム / 方位関係 |
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| Research Abstract |
We have developed a new analysis system for studying orientation of quasicrystal (QC) by electron back scattering diffraction (EBSD). The new system has been employed to study a eutectic structure formed by Qc and Mg phases in the Mg-Cd-Yb system prepared by unidirectional solidification process, and hence orientation relationship between QC and Mg phases has been successfully clarified. It is very clear that basal plane of Mg and 2-fold symmetry plane of QC are same lattice spacing. Also, prismatic plane of Mg and 5-fold symmetry plane of QC are same lattice spacing. From EBSD result, it was revealed that growth direction of QC-Mg eutectic is <2f >QC// <1 0 -1 0 > Mg and a number of orientation relationships between QC and Mg have been verified. Furthermore, there are parallel directions normal to planes which are same lattice spacing, so QC and Mg can form stable interface. The new system will be very powerful to study microstructure of QC in the future.
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