2013 Fiscal Year Final Research Report
Structural stability and mechanical properties of intermetallic compounds with the order-disorder (OD) structure
| Project/Area Number |
23360306
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Structural/Functional materials
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| Research Institution | Kyoto University |
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Principal Investigator |
KISHIDA Kyosuke 京都大学, 工学(系)研究科(研究院), 准教授 (20354178)
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| Project Period (FY) |
2011-04-01 – 2014-03-31
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| Keywords | Order-disorder (OD)構造 / 結晶構造解析 / 透過電子顕微鏡法 / 相安定性 / 力学特性 / 変形機構 |
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| Research Abstract |
Ternary Mg-TM (Transition-metal)-RE (Rare-earth) phases with long-period stacking-ordered (LPSO) structures have received a considerable amount of attention as new types of strengthening phases in high-strength Mg alloys. These LPSO phases are reported to be beneficial to endowing Mg alloys with high strength and high ductility simultaneously. However, mechanisms behind this have largely remained unsolved. In the present study, the crystal structure models for the LPSO phases were established based on the crystallographic concept of the order-disorder (OD) theory. Structural stability, formation mechanism and deformation behavior of the LPSO/OD phases were investigated.
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