2015 Fiscal Year Final Research Report
Clarification of material properties of LPSO structure by quantum beam analyses
| Project Area | Materials Science of synchronized LPSO structure -Innovative Development of Next-Generation Lightweight Structural Materials- |
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| Project/Area Number |
23109003
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| Research Category |
Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
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| Allocation Type | Single-year Grants |
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| Review Section |
Science and Engineering
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| Research Institution | Japan Atomic Energy Agency |
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Principal Investigator |
AIZAWA Kazuya 国立研究開発法人日本原子力研究開発機構, 原子力科学研究部門 J-PARCセンター, 研究主席 (40354766)
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| Co-Investigator(Kenkyū-buntansha) |
KIMURA Shigeru 公益財団法人高輝度光科学研究センター, 利用研究促進部門, 主席研究員 (50360821)
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| Co-Investigator(Renkei-kenkyūsha) |
KAMIYAMA Takashi 高エネルギー加速器研究機構, 物質構造科学研究所, 教授 (60194982)
YASUDA Nobuhiro 公益財団法人高輝度光科学研究センター, 利用研究促進部門, 研究員 (10393315)
MOROOKA Satoshi 首都大学東京, システムデザイン学部, 助教 (10534422)
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| Project Period (FY) |
2011-04-01 – 2016-03-31
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| Keywords | LPSO / マグネシウム / 中性子 / 放射光 / 結晶構造 / 力学特性 / 熱特性 |
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| Outline of Final Research Achievements |
To clarify the crystal structure of synchronized LPSO alloys and the structural changes by stress loading or thermal heating, we have been performed this project. It is found that the crystal structure of the 18R LPSO single phase is described the crystal structure proposed by the STEM result in bulk scale sample by neutron diffraction at J-PARC. Also, there exists elastic anisotropy between a-axis and c-axis directions. Further, the kink deformation of 18R LPSO single phase is cooperative phenomena of relaxation of strain with nearly constant duration by rotation with precursor. It is found that crystal structure of the MgAl3Gd4 is well described by OD structure proposed by STEM by synchrotron radiation diffraction at SPring-8. Its features are existing of A6Gd8 cluster with interstitial atom at center position and covalent character of Al atom. Thermal coefficient of 18R LPSO single phase was determined, and it is less than that of pure Mg.
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| Free Research Field |
物質科学
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