2010 Fiscal Year Final Research Report
Improvement of shape memory effect for high-temperature shape memory alloys
| Project/Area Number |
19360320
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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 | National Institute for Materials Science |
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Principal Investigator |
MITARAI Yoko National Institute for Materials Science, 環境・エネルギー材料萌芽ラボ, グループリーダー (10343881)
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| Co-Investigator(Kenkyū-buntansha) |
HARA Toru 独立行政法人物質・材料研究機構, ナノ計測センター, 主幹研究員 (70238161)
PIN Dehai 独立行政法人物質・材料研究機構, 超耐熱材料センター, 主任研究員 (80354207)
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| Project Period (FY) |
2007 – 2010
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| Keywords | 構造・機能材料 / インテリジェント材料 / 形状記憶合金 |
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| Research Abstract |
Shape memory effect is related with martensitic transformation in shape memory alloys. In this study, alloy design of high-temperature shape memory alloys whose applied strain at high temperature is recovered by heating above phase transformation temperature will be clarified. We focused on Ti(Pt, Ir) with high phase transformation temperature. Phase transformation and strain recovery of Ti(Pt, Ir) were investigated. The 2% of recovery strain was obtained in Ti(Pr, Ir) deformed at 850 degree C after heating above phase transformation temperature. It clearly indicates that Ti(Pt, Ir) is very promising as high-temperature shape memory alloys. It is also clear that strain recovery will be improved by controlling of phase transformation strain during phase transformation and crystal structure by addition of Ir.
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Research Products
(22 results)
